最新刊期
卷 32 ， 期 5 ， 2012
- 摘要：GFA（glass forming ability）and mechanical properties as well as influencing factors of Mg-Ni-RE-Ag quaternary system were approached.The results show that Ag element instead of Mg can improve the glass-forming abilitys of Mg75Ni15Gd10,and its preparation size is increased from 3 mm up to 7 mm of Mg69Ni15Gd10Ag6.Proper Ag addition can improve the compressive fracture strength and plasticity,improving the comprehensive mechanical properties.关键词：Mg-Ni-Gd-Ag Amorphous Alloy;Glass-Forming Ability;Mechanical Properties
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发布时间：2023-12-18 - 摘要：Through investigating electric resistivity-temperature curves of Sn-6Bi alloy melt,two kinds of liquid-liquid structure transition（LLST） were irreversible LLST at high temperature stage（8901 095 ℃） and reversible LLST at low temperature（645 ℃） were observed at different temperature zone.The irreversible LLST is attributed to the transition of metastable Sn SROs and（Bi）n SROs,while the tetrahedral Sn-Sn SROs can be broken or dissolved into smaller ones during heating cycle,and to be rebuilt during subsequent cooling process,which is responsible for the reversible LLST.Based on the observation,the solidification experiments were carried out.With the melt experienced LLST from temperature induction,the solidification undercooling is increased,and solidified time is postponed with the slightly decrease of solidification latent heat,refining evidently solidification microstructure.关键词：Melt Structure Changes;Sn-6Bi Alloy;Solidification Behavior;Microstructure
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发布时间：2023-12-18 - 摘要：Directional porous copper was fabricated by directional solidification method under a pressurized hydrogen or gas mixture of hydrogen and argon.The samples were processed by an image analyzer to obtain the different pore diameter and inter-pore spacing.The theoretical porosity of all possible structures was calculated and compared with the actual porosity of the samples.The Gibbs free energy of every structure was calculated.Meanwhile,the evolution completeness of every possible structure was analyzed.The results show that calculated porosity of hexagonal pore structure exhibits the smallest deviation from actual porosity,where formed Gibbs energy is the lowest.Hexagon is the ideal structure because the hexagon structure is no vacant site and no interrupt in evolution of porous structure.关键词：Directional Solidification;Ordered Porous Metal;Pores;Hexagon;Ideal Structure
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发布时间：2023-12-18 - 摘要：<正>鄂州市博物馆名誉馆长董亚巍称,该馆与北京联合大学合作,正在试验我国古代最大的青铜器——商代青铜器司母戊鼎铸造工艺。史载,自晚唐以来,中国青铜生产工艺失传,至今断代已超过1000年,其范铸工艺技术一直是个未解之谜。
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发布时间：2023-12-18 - 摘要：<正>4月23日,国家发改委网站公布了钢铁、有色金属、建材、化工4大行业一季度运行情况,显示四大行业增长幅度较去年同期均有所放缓。民族证券宏观经济分析师陈伟认为,这几个行业增速出现较大幅度减缓与整个经济大环境有关,
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发布时间：2023-12-18 - 摘要：<正>2012年3月20日,全柴集团天和机械有限公司年产6万吨柴油机铸造项目顺利通过省级鉴定,标志着柴油机缸体升级达到新的水平。天和公司在原全柴集团铸造分厂基础上重新建设,占地293亩,建筑面积9万平方米。该项目列入我国重
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发布时间：2023-12-18 - 摘要：<正>根据联合金属网的数据,上海保税区的铜库存已经突破60万吨,逼近去年65万吨的最高位。"库存其实是很不乐观的,算上港口、期货市场的,国内还有一些小仓库没法统计。"联合金属网有色金属频道主管王丽新对库存量的真实数据表示担忧。
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发布时间：2023-12-18 - 摘要：<正>2011年,东风汽车股份有限公司铸造分公司团委成立了以青年技术人员为主体的青年科技协会,并紧紧围绕"1322"（即一个协会,三个小组,人均两项课题,全年两次发布）,全面推进科协工作。随着青年科协创新工作的深入开展,铸造分公司青
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发布时间：2023-12-18 - 摘要：<正>据悉,昆钢旗下云南钛业股份有限公司是目前国内少数拥有从热轧到冷轧、退火钛带、钛卷生产工艺流程技术的厂家,并获得7项自主知识产权的钛带、钛卷生产技术,填补了国内空白。从投产至今,云南钛业股份有限公司建成了6条钛带、钛卷
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发布时间：2023-12-18 - 摘要：<正>由于欧债危机的蔓延使得我国铸造业正在经历低谷期,销售业绩很不理想。但是近日有报道指出,中东将成为我国铸造业的新买主这一消息成为铸造业的及时雨。这对于国内正处在低迷状态的
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发布时间：2023-12-18 - 摘要：<正>中国是铸造大国,不但是铸件产量大国,更是铸造生产企业数量上的大国。这其中,精密铸造（也称熔模铸造,失蜡铸造,精铸）企业数量占比约10%,其产量不大,但精密铸件的产品附加值高,技术含量也相应较高由于近些年来,国际国内的铸件需求商对铸件的表面质量、
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发布时间：2023-12-18 - 摘要：<正>1.会议主办单位中国稀土学会铸造合金专业委员会、中国机械工程学会铸造分会铸铁及熔炼技术委员会2.会议承办单位山东省淄博蠕墨铸铁股份有限公司3.会议时间:2012年9月10日～13日
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发布时间：2023-12-18 - 摘要：<正>2012年3月17日下午,陕西省机械工程学会压铸分会在曲江国际会展中心举办了陕西压铸行业发展论坛,来自省内外的部分压铸企业负责人和工程技术人员参加了本次论坛。论坛由陕西省机械工程学会压铸分会副主任委员赵宝林主持。香港压铸及铸造业总会副秘书长张沛作了《压铸技术信息应用及香港压铸业情况》报告;西安标准精密机械有限公司副总经理王亚平作了
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发布时间：2023-12-18 - 摘要：<正>3月19日,2012（第三届）国际再生金属大会在广东清远举行,由清城区政府、清远市再生金属行业商会与广州有色金属研究院共同编制的《清远再生金属产业技术路线图》,历时两年,经过7场专家研讨会的推敲和凝练,已形成了成果,在本次大会中正式对外发布。
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发布时间：2023-12-18 - 摘要：Based on the finite differential method,the relationship between the liquid core length of the sheet and water cooling strength was analyzed during continuous casting process of QSn6.5-0.1 alloy.Meanwhile,the evolution of microstructure in cross section of QSn6.5-0.1 alloy was also simulated by the cellular automaton method at the 2 500 W/（m2·K）.Compared with the experimental results,it is found that the CA method can well predict the grains growth in QSn6.5-0.1 alloy during continuous casting process.关键词：QSn6.5-0.1 Alloy;Cellular Automaton;Horizontal Continuous Casting;Solidification Structure
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发布时间：2023-12-18 - 摘要：Effects of the frequency of the pulsed magnetic field on Mg-Gd-Y-Zr magnesium alloy during solidification process were investigated.With applying pulsed magnetic field during the solidification,the grain size can be refined.At the same time,the content of Gd or Y in the grain are increased,and the amount of eutectic structure on the grain boundary is also correspondingly decreased by applying the pulsed magnetic field of 10 Hz.The charged ions moves in a spiral way in the direction of magnetic force line with the action of pulsed magnetic field,and the periodic change of the magnitude and direction of electric field force restrains the free vibration of particles,resulting in the more energy potential barrier required to be overcome,which are responsible for the increase of solute content of Gd and Y in grains.关键词：Pulsed Magnetic Field;Solidification;Grain Refinement;Mg-Gd-Y-Zr Magnesium Alloy;Solute Content
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发布时间：2023-12-18 - 摘要：Semi-solid Al-4.5Cu alloy billets were prepared by pulsed magnetic field technique,and the effects of cooling rate and pulsed frequency on solidified morphology and size of primary Al phase in semi-solid Al-4.5Cu alloy were observed.The experimental results show that semi-solid Al-4.5Cu alloy with near-spherical structure can be obtained by PMF treatment.The average size and shape coefficient of primary α-Al particles are decreased with decreasing in cooling rate and they are increased with increasing in pulsed frequency.However,with the cooling rate lower than 20 ℃/min and/or the pulsed frequency more than 10 Hz,the morphology of primary Al phase is coarsened.Primary α-Al particles with average diameter of about 96 μm and average shape factor of 0.58 in the semi-solid Al-4.5Cu alloy can be observed with cooling rate of 40 ℃/min and the pulsed frequency of 6 Hz,which is suitable for thixoforming.关键词：Pulsed Magnetic Field;Semi-solid;Al-4.5Cu Alloy
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发布时间：2023-12-18 - 摘要：The current status about numerical simulation of amorphous alloys during solidification process was surveyed,focusing on several models relative with the common preparation methods of amorphous alloys.Finally,the future tendency of numerical simulation in amorphous alloys during casting was presented.关键词：Amorphous Alloys;Numeral Simulation;Solidification;Cooling Rate
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发布时间：2023-12-18 - 摘要：Through establishing a three-dimensional axisymmetric finite-element model,the temperature distribution of TC4 alloy ingot during VAR（vacuum arc remelting） process was simulated by moving boundary heat transfer method.The solidification structure and shrinkage porosity（hole） formation in the TC4 alloy ingot during VAR process were visualized by the coupled method of cellular automaton（CA） and finite element（FE） method.The simulated results are well in agreement with experimental ones in grain structure,growth direction of columnar crystal,transformation of columnar grain into equiaxed grain as well as shrinkage porosity（hole）.关键词：VAR;CAFE Model;Solidification Structure;Shrinkage Porosity;Titanium Alloy
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发布时间：2023-12-18 - 摘要：The semi-solid die-forging forming process of A356 alloy was visualized by numerical simulation based on semi-solid A356 alloy apparent viscosity model.The characteristics of melt flow and temperature distribution was presented by analyzing the effects of extruding speed,semi-solid slurry temperature and mould preheating temperature on performance of semi-solid forming aluminum alloy wheel.The results show that the optimized forming parameters of the alloy wheels are as follows:the semi-solid slurry temperature of 600 ℃,and the mould preheating temperature of 300 ℃,the extruding speed of 5 mm/s.Meanwhile,the holding time is 25 s.关键词：A356 Aluminum Alloy;Semi-Solid Forging;Numerical Simulation;Apparent Viscosity Model
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发布时间：2023-12-18 - 摘要：Manufacturing of 7A09 aluminum alloy impeller by semi-solid precision forging was performed.A new method of direct-heating and isothermal treatment to prepare billets with semi-solid microstructure was presented,and key problems for the large dimension billet preparation were analyzed.FEM was adopted to analyze the semi-solid forging process and the influence of process parameters.The practical forging was conducted based on the simulated results.Heat treatment of the semi-solid forgings was investigated,and desirable mechanical properties were obtained as follows:tensile strength≥500 MPa,elongation≥9%,hardness（HB）≥160.关键词：Aluminum Alloy;Semi-Solid Forging;Impeller
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发布时间：2023-12-18 - 摘要：Semi-solid ZL203 alloy billets were prepared by centrifugal and chilling device,and effects of different rotating speed,preheating temperature and pouring temperature on primary phase in the alloy were investigated.The results show that semi-solid aluminum alloy with spherical or granular primary grain can be prepared by centrifugal and chilling technology.Primary phase becomes finer with the increase of rotating speed,and its morphology is transformed from equiaxed dendrite into spherical or granular one.With the decrease of preheating temperature or pouring temperature,primary phase size is firstly decreased and then increased.关键词：Centrifugal and Chilling Casting;Semi-solid;Aluminum Alloy
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发布时间：2023-12-18 - 摘要：By using self-developed electromagnetic stirring-cooling slope（EMS-CS） equipment,semi-solid AlSi9Cu3 alloy slurry was prepared.Effects of slope angle,pouring temperature and EMS voltage on microstructure of AlSi9Cu3 alloy were investigated by orthogonal test method.The results show that the three factors influencing the average equivalent diameter of the primary phase are as follows:pouring temperature,slope angle,EMS-voltage,and they influencing the average shape factor of the primary phase are as follows:EMS-voltage,slope angle,pouring temperature.The optimized processing parameters for preparing the semi-solid slurry with desirable structure are presented as slope angle of 25°35°,pouring temperature of 650 ℃ and EMS voltage of 200 V300 V.关键词：Semi-solid;Al-Si Alloy;EMS-CS;Orthogonal Test Method
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发布时间：2023-12-18 - 摘要：<正>由于铸币成本高于面值,加拿大从今年五月起,停止铸造并逐步回收一分硬币。与此同时,部分硬币在美国退出流通领域似乎也是大势所趋。随着电子货币在支付领域的日益普及,小面额、高成本的金属货币正逐渐失去往日在货币流通中的地位。
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发布时间：2023-12-18 - 摘要：<正>伴随着欧债危机以及2008年的次贷危机的日渐消退,美国主要产业之一的汽车行业开始出现回暖现象,而汽车行业的复苏也将在一定程度上带动汽车相关铸件的销量。同时,由于美国采矿业、建筑业以及轨道交通业等铸造下游产业需求量的增加,
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发布时间：2023-12-18 - 摘要：<正>据报道,日本丰田汽车公司宣布,将于2012年11月至2013年7月投资5500万美元,扩张其位于美国弗吉尼亚州布法罗的发动机与传动系统制造工厂（TMMWV）。这将为西弗吉尼亚州创造约80个新的就业机会。
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发布时间：2023-12-18 - 摘要：<正>根据美国地质调查局（USGS）提供的数据,中国是世界上最大的钨矿资源储藏国和生产国,估计储量达190万吨,所占世界总储量的份额达66%;其次俄罗斯储量为25万吨,占8.7%;美国为14
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发布时间：2023-12-18 - 摘要：Filling and solidification of squeezing casting semi-solid A356 alloy connecting rod were simulated by establishing flow model with the help of PLCO model（Power Law Cut-Off） in the Procast2008 software.Effects of pouring temperature,punching velocity and preheating temperature of the mould on quality of the connecting rod were investigated to obtain the optimized processing parameters.With pouring at 576583 ℃ and preheating mould at 200250 ℃ as well as punching at 0.10.5 m/s,the semi-solid A356 slurring is filled smoothly with a short solidification time,and the defects are decreased significantly in the connecting rod.关键词：Semi-solid;Squeeze Casting;ProCAST;PLCO Model;Connecting Rod
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发布时间：2023-12-18 - 摘要：There exists leakage in low pressure casting aluminum alloy cylinder head for engine during gas tight testing.The microstructure and defects mechanism of the gas leakage position were investigated by OM（optical microscope）,SEM（scanning electron microscope）,EDS（energy dispersive spectrometer）,and it was compared with that of the sound part.The results reveal that interdendritic shrinkage porosities are responsible for the leakage of cylinder head.Meanwhile,the oxide inclusions and abnormal growth block-shaped Si phase promote the tendency of shrinkage porosity formation during the casting solidification process.关键词：Aluminum Alloy Cylinder Head;Gas Leakage;Microstructure;Shrinkage Porosity
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发布时间：2023-12-18 - 摘要：Nine sets of Al-Cu alloy specimens were produced by squeeze casting based on the processing parameters from four factors-three levels orthogonal testing.The S/N（signal/noise） ratio and variance of hardness,tensile strength and elongation were analyzed using Taguchi methods.The results show that applied pressure is the most important factor affecting S/N ratio,and its contribution to tensile strength,hardness and elongation reaches 47.71%,47.90% and 41.76%,respectively.Pouring temperature and die preheating temperature are both significant factors to S/N ratio while applied pressure time is an non-significant factor.The optimized parameters are as follow:pouring temperature of 730 ℃,die preheating temperature of 200 ℃,applied pressure of 75 MPa and holding-pressure time of 45 s.关键词：Squeeze Casting;Al-Cu Alloy;Taguchi Methods;Parameters Optimization
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发布时间：2023-12-18 - 摘要：The solubility of alumina based ceramic core is the key factor influencing its wide application in manufacturing turbine blade.Effect of porosity on properties ceramic core was investigated.The results show that,the leaching of the mullite phase is dominant in the leaching process.The leaching speed tends to increase firstly and then becomes stable with the increase of the porosity,and the core strength is decreased gradually.The leaching rate can reach 7.6 mg/min with porosity of 41.8%,and the room temperature flexural strength reaches 14 MPa.Meanwhile,the once boiling time with alkali should not exceed 4 hours.关键词：Ceramic Core;Alumina;Porosity;Leaching Speed
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发布时间：2023-12-18 - 摘要：Due to easy to wear,Excavator’s teeth requires high hardness and high wear resistance for teeth tip as well as high strength and toughness for the other.Based on composite technology of vacuum investment casting combining with steel shot chilling and vibration,bucket teeth of excavator was manufactured successfully with high strength and high toughness.After heat treatment,properties of the bucket teeth are obviously superior to ones produced by other technologies.Hardness and impact toughness,tensile strength of the bucket teeth reach HRC50,21.3 J·cm-2 and 1 673 MPa,respectively.Meanwhile,the more martensite structure can be observed in the castings.Wear resistance is increased by 1.7 times compared with those by other technologies.关键词：Vacuum Investment Pouring;Vibration Pouring;Steel Shot Chill;Bucket Teeth
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发布时间：2023-12-18 - 摘要：The refractory aggregate which was composed of quartz powder and bauxite was sintered at different temperatures.BST 401 bending strength tester was used to test the bending strength of samples sintered to understand the sintering behavior of the refractory aggregate with different proportion ratio.The results show that with the increase of the bauxite content in the refractory aggregate and the sintering temperature,the bending strength of the samples is increased,and the bending strength of the sample exhibits the maximum value with 60% bauxite and 40% quartz powder at 1500 ℃.The morphology of samples sintered was observed by scanning electron microscope（SEM）.The results reveal that samples sintered shows desirable sintering behavior,meeting the requirements of the refractory aggregate in the coating for evaporated pattern casting cast steel.关键词：EPC;Coating for Cast Steel;Refractory Aggregate;Sintering Behavior
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发布时间：2023-12-18 - 摘要：Through the exploration of production practice,it has successfully resolved the bottleneck problems which limit the production,such as mechanical failure of the SCR casting machine pinch roller.Having the in-depth research on the mechanical failure of casting-machine pinch roller and carrying on maintaining,prophylactic repair,timely monitor and replace for the pinch roller,the technology equipment innovation for pinch roller are useful for reducing the incidence of mechanical failure,saving energy,reducing consumption,extending the service life and enhancing economic benefits of enterprises.关键词：SCR Casting-Machine;Pinch Roller;Mechanical Failure;Processing Measures;Technology Equipment Innovation;Service Life
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发布时间：2023-12-18 - 摘要：The ultrasonic field was introduced into the casting process of the aluminum alloy 7050 flat billet with the size of 500 mm×1 320 mm.The microstructure,distribution of grain and the macrosegregation were investigated comparatively under conventional casting and ultrasonic casting.The results show that,after ultrasonic treatment（UST）,the grain size is refined,and the growth of coarse-dendrites is restrained,meanwhile,the distribution of microstructure of the billet becomes more uniform.The level of macrosegregation along different direction is reduced under ultrasonic field,where the segregation index of Zn,Mg and Cu,along the symmetry axis in the direction of length and width,is decreased from 0.101 3,0.111 7,0.126 0 and 0.111 9,0.111 3,0.128 1 to 0.083 5,0.079 0,0.102 7 and 0.074 3,0.072 5,0.084 1,respectively.With the effects of ultrasonic cavitation and ultrasonic flows,the temperature field and the flow field in the liquid pool are changed,which improves the circumstance of grains formation and promotes the uniform distribution of solute elements,so refining the grain size and weakening macro-segregation behavior.关键词：Semi-continuous Casting;Ultrasonic;Flat Billet;Microstructure;Macrosegregation;Two-Phase Region
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发布时间：2023-12-18 - 摘要：In order to improve wear-resistant performance of rotary body to increase its service life,WC particles reinforced HT200 matrix composites with 200 mm in external diameter and 150 mm in axial directions were successfully prepared by centrifugal casting.The interface between particles and the matrix was observed and analyzed by optical microscope and scanning electron microscope.The results show that the composite layer exhibits uniform distribution in both radial and axial directions,where the particles bond well with the matrix without segregation occurrence.The dissolved behavior can be observed in the composite layer as a result of particles with different size to form metallurgical bonding.关键词：Centrifugal Casting;Particles Reinforced Iron Matrix Composites;Microstructure
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发布时间：2023-12-18 - 摘要：The Cu and TiB2/Cu composites with different volume fraction of TiB2 were fabricated by microwave and by vacuum sintering technology.The density,micro-hardness and electrical conductivity were measured,and the microstructures and properties of the samples fabricated by different sintering modes were analyzed.The results show that microwave sintering can save more time and energy consumption than vacuum sintering.Though coarsened grains and twin crystals which decreased with the increase of TiB2 exist in the microwave sintered samples,the properties of samples obtained by microwave sintering are superior to ones obtained by vacuum sintering.关键词：Microwave Sintering;TiB2 Particle;Copper Matrix Composite
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发布时间：2023-12-18 - 摘要：A cylindrical bulk metallic glass Cu44.25Ag14.75Zr36Ti5 with a diameter of 3 mm was prepared by copper mold casting method.X-ray diffraction（XRD） analysis indicates that the sample exhibits totally amorphous state.By means of X-ray diffractometry（XRD） and differential scanning calorimetry（DSC）,the crystallization behavior of amorphous Cu44.25Ag14.75Zr36Ti5 alloy was observed.The first and second crystallization activation energy of bulk metallic glass were determined by the Kissinger plot method and Ozawa plot method.The results show that the bulk metallic glass of Cu44.25Ag14.75Zr36Ti5 has good thermal stability.After crystallization treatment with the heating rates of 10 ℃/min,the crystal phases are mainly composed of Cu8Zr3 and Cu10Zr7.关键词：Bulk Metallic Glass;Crystallization Activation;Crystallization;Nucleation
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发布时间：2023-12-18 - 摘要：6063 aluminum alloy samples with varied RE additions were prepared by strictly controlling pouring process and squeezing casting parameters,and tensile testing and micro-hardness testing for the samples prepared were carried out.Optimized composition design was conducted by orthogonal method.In addition,microstructure of the as-cast alloy was observed by OM（optical microscope） and SEM（scanning electron microscope） to understand the role of RE in the alloy.The result shows that the Al-0.5Mg-0.38Si-0.2RE alloy exhibits desirable mechanical properties.Meanwhile,the grains size in the alloy can be refined,and size and morphology of precipitate can be improved effectively.The mechanical properties of 6063D-RE alloy can fully meet requirements of the national standard.关键词：6063 Aluminum Alloy;Rare Earth;Orthogonal Experiment;Mechanical Properties
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发布时间：2023-12-18 - 摘要：SiC nano-powders reinforced ZM-6 Mg alloy was prepared by infiltration method,and the microstructures and salt-fog corrosion behavior of the composites prepared were investigated.The results show that the microstructure in nano-SiC powders reinforced ZM-6 Mg alloys is refined with the decrease of grain size,and precipitates are uniformly distributed into the composites after T6 heat treatment.The salt-fog corrosion rate of the composites with 0.1% SiC powder content is decreased by 42%,showing the excellent corrosion resistance in salt-fog corrosion.关键词：ZM-6 Mg Alloy;Nano-SiC Powders;Salt-fog Corrosion
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发布时间：2023-12-18 - 摘要：Fatigue tests in terms of high cycle of 107 and low cycle of 105 at 150 ℃ were carried out for the samples from gravity-casting C14 cylinder heads of AC4B aluminum alloy.The low cycle fatigue strength and high-cycle fatigue strength of AC4B aluminum alloy were presented by non-linear fitting and statistical method.The results show that high-cycle fatigue S-N curves follows second-order exponential decay form,meeting the "limited fatigue limit" condition,while low-cycle fatigue S-N curves is characterized by quadratic form.Low-cycle fatigue strength and high-cycle fatigue strength obtained are consistent by two kinds of ways,which shows that the analysis method is rational and reliable.Fatigue strengths of samples involving the low-cycle and high-cycle both meet the new Sail cars safety and reliability of Shanghai GM.关键词：AC4B Aluminum Alloy;Fatigue Strength;S-N Curve
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发布时间：2023-12-18 - 摘要：Effects of MM on the microstructure and fluidity of Cu-30Ni-20Fe-5Al alloy,which was prepared by vacuum melting with various MM content,were investigated by SEM（scanning electron microscope）and XRD（X-ray diffraction）.The results show that as-cast Cu-30Ni-20Fe-5Al alloy is composed of α-Cu and NiAl phase,where NiAl phase is distributed in form of irregular ring-shape with Fe enrichment at the both inner and outer sides.The NiAl phase becomes spherical and rod-like structure with the addition of MM addition,and MM-enrichment phase is segregated at the grain boundary.NiAl phase exhibits the desirable spherical structure in the alloy with 0.78% MM addition.Compared to the alloy without MM element addition,the length of spiral samples is increased by 25%,showing the best fluidity.关键词：As-cast Cu-30Ni-20Fe-5Al Alloy;MM;Fluidity
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发布时间：2023-12-18
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