Effects of Ball Milling Process on the Mechanical Properties and the Coefficient of Thermal Expansion of 2024Al Composites Reinforced with Negative Expansion Ceramics ZrMgMo<sub>3</sub>O<sub>12</sub>

Wang Lei; Yang Junrui; Liu Zhongxia; Yang Ruibin; Shao Wenlong; Chen Yadong; Cao Yanji

doi:10.15980/j.tzzz.2018.08.022

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Effects of Ball Milling Process on the Mechanical Properties and the Coefficient of Thermal Expansion of 2024Al Composites Reinforced with Negative Expansion Ceramics ZrMgMo₃O₁₂
Vol. 38, Issue 8, Pages: 894-898(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.08.022

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[1]王磊,杨俊瑞,刘忠侠,杨瑞宾,邵文龙,陈亚东,曹彦吉.球磨工艺对ZrMgMo_3O_(12)/2024Al微观组织和性能的影响[J].特种铸造及有色合金,2018,38(08):894-898.

Wang Lei, Yang Junrui, Liu Zhongxia, et al. Effects of Ball Milling Process on the Mechanical Properties and the Coefficient of Thermal Expansion of 2024Al Composites Reinforced with Negative Expansion Ceramics ZrMgMo₃O₁₂. [J]. Special Casting & Nonferrous Alloys 38(8):894-898(2018)
[1]王磊,杨俊瑞,刘忠侠,杨瑞宾,邵文龙,陈亚东,曹彦吉.球磨工艺对ZrMgMo_3O_(12)/2024Al微观组织和性能的影响[J].特种铸造及有色合金,2018,38(08):894-898. DOI： 10.15980/j.tzzz.2018.08.022.

Wang Lei, Yang Junrui, Liu Zhongxia, et al. Effects of Ball Milling Process on the Mechanical Properties and the Coefficient of Thermal Expansion of 2024Al Composites Reinforced with Negative Expansion Ceramics ZrMgMo₃O₁₂. [J]. Special Casting & Nonferrous Alloys 38(8):894-898(2018) DOI： 10.15980/j.tzzz.2018.08.022.

摘要

采用球磨混合ZrMgMo

粉与2024Al粉

制备了ZrMgMo

体积分数为10%的2024Al复合材料。并用SEM、XRD、维氏硬度计和热膨胀仪研究球磨工艺对复合材料的微观组织、硬度和热膨胀性能的影响。结果表明

随着球磨转速的增加或球磨时间的延长

ZrMgMo

颗粒在Al基体上趋向均匀分布

并与基体结合良好。这有利于ZrMgMo

的弥散强化

还改善了ZrMgMo

颗粒与基体界面间的载荷传递能力

增加了ZrMgMo

与2024Al基体间热膨胀系数的叠加效果

有利于降低复合材料的热膨胀系数。当球磨转速为200r/min、球磨4h时制备的复合材料硬度高于2024Al合金

热膨胀系数明显低于2024Al合金。

Abstract

The ZrMgMo

/2024 Al composites with 10% ZrMgMo

in volume fraction were prepared through mixing 2024 Al powder and ZrMgMo

powder with various milling time and milling speed.The microstructure

hardness and coefficient of thermal expansion（CTE）of composites were investigated using SEM

XRD

Vickers hardness tester and dilatometer

respectively.The results reveal that with increasing in milling rate and milling time

the ZrMgMo

particles are distributed uniformly inα-Al matrix with excellent bonding

which are beneficial to the dispersion strengthening effect of ZrMgMo

particles to Al matrix and improvement of the mechanical properties as well as improvement of the interfacial load transfer capacity on the interface of ZrMgMo

/Al matrix.Finally

the superposed effect of the coefficient of thermal expansion of ZrMgMo

and 2024 Al is increased and the thermal expansion of composites is decreased.Therefore

the 10% ZrMgMo

/2024 Al composites fabricated with milling rate of 200 r/min for 4 hhas not only higher than that of 2024 Al in hardness

but also the lowest CET（16×10-6 K-1）.

关键词

负膨胀ZrMgMo3O12陶瓷2024Al复合材料球磨工艺硬度

Keywords

Negative Expansion Ceramics ZrMgMo3O122024Al CompositesBall Milling ProcessHardness

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Effects of Ball Milling Process on the Mechanical Properties and the Coefficient of Thermal Expansion of 2024Al Composites Reinforced with Negative Expansion Ceramics ZrMgMo3O12

DOI： 10.15980/j.tzzz.2018.08.022

摘要

Abstract

关键词

Keywords

references

Effects of Ball Milling Process on the Mechanical Properties and the Coefficient of Thermal Expansion of 2024Al Composites Reinforced with Negative Expansion Ceramics ZrMgMo₃O₁₂