Homogenization Treatment for Al-9.1Zn-1.9Mg-1.6Cu Alloy

Han Yi 1; Li Lian1; Mu Shenzhou1; Deng Zhenzhen1; Le yongkang1; Zhang Xinming2

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Homogenization Treatment for Al-9.1Zn-1.9Mg-1.6Cu Alloy
- role： First author 第一作者
- Affiliation：
  Institute of Materials Science and Engineering,Suzhou Institute Ltd for Nonferrous Metals,Suzhou,China
  College of Materials Science and Engineering,Central South University,Changsha,China
Han Yi 1
1 2 ,
- Affiliation：
  Institute of Materials Science and Engineering,Suzhou Institute Ltd for Nonferrous Metals,Suzhou,China
Li Lian1
1 ,
- Affiliation：
  Institute of Materials Science and Engineering,Suzhou Institute Ltd for Nonferrous Metals,Suzhou,China
Mu Shenzhou1
1 ,
- Affiliation：
  Institute of Materials Science and Engineering,Suzhou Institute Ltd for Nonferrous Metals,Suzhou,China
Deng Zhenzhen1
1 ,
- Affiliation：
  Institute of Materials Science and Engineering,Suzhou Institute Ltd for Nonferrous Metals,Suzhou,China
Le yongkang1
1 ,
- Affiliation：
  College of Materials Science and Engineering,Central South University,Changsha,China
Zhang Xinming2
2
Vol. 30, Issue 10, Pages: 891-893(2010)
Published： 2010 ，
DOI：

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[1]韩逸,李炼,牟申周,邓桢桢,乐永康,张新明.Al-9.1Zn-1.9Mg-1.6Cu合金均匀化工艺研究[J].特种铸造及有色合金,2010,30(10):891-893+981-982.

Han Yi 1, Li Lian1, Mu Shenzhou1, et al. Homogenization Treatment for Al-9.1Zn-1.9Mg-1.6Cu Alloy. [J]. Special Casting & Nonferrous Alloys 30(10):891-893(2010)
[1]韩逸,李炼,牟申周,邓桢桢,乐永康,张新明.Al-9.1Zn-1.9Mg-1.6Cu合金均匀化工艺研究[J].特种铸造及有色合金,2010,30(10):891-893+981-982. DOI：

Han Yi 1, Li Lian1, Mu Shenzhou1, et al. Homogenization Treatment for Al-9.1Zn-1.9Mg-1.6Cu Alloy. [J]. Special Casting & Nonferrous Alloys 30(10):891-893(2010) DOI：

Homogenization Treatment for Al-9.1Zn-1.9Mg-1.6Cu Alloy

Han Yi 1 ; Li Lian1 ; Mu Shenzhou1 ; Deng Zhenzhen1 ; Le yongkang1 ; Zhang Xinming2 ;

Abstract

Microstructure evolution and phase constituent of as-cast and homogenized Al-9.1Zn-1.9Mg1.6Cu alloy were investigated by means of optical microscope（OM）,SEM（scanning electron microscope）,EDS（energy dispersive spectrometer）and XRD（X-ray diffraction）and DSC（differential scanning calorimeter）.The results reveal that a lot of nonequilibrium low-melting eutectic phase exist in the ascast microstructure of the alloy,and initial melting temperature reaches 475℃.As-cast microstructure is composed ofα-Al phase,η-MgZn2phase and minor Al7Cu2Fe phase.The alloy is totally composed ofα-Al phase after homogenized at above 460℃,which shows that the non-equilibrium low-melting eutectic phase can dissolve into the matrix entirely.Desirable effects of the alloy can be observed with homogenizing at 465℃for 24hours.

transl

Keywords

Al-Zn-Mg-Cu Alloy; Homogenization; Microstructure; Phase Constituent

transl

摘要

采用光学显微镜、扫描电镜、能谱分析、X射线衍射分析和差示扫描量热分析研究了Al-9.1Zn-1.9Mg-1.6Cu合金铸态与均匀化态显微组织及相组成演化规律。试验结果表明

该合金铸态组织中存在大量的非平衡低熔点共晶相

其初始熔化温度为475℃;合金铸态组织相组成包括α-Al、η-MgZn2及少量的Al7Cu2Fe相;在460℃以上均匀化后

该合金处于α-Al单相区

组织中非平衡低熔点共晶相均能固溶于基体内;465℃×24h是该合金适宜的均匀化处理工艺。

Abstract

Microstructure evolution and phase constituent of as-cast and homogenized Al-9.1Zn-1.9Mg1.6Cu alloy were investigated by means of optical microscope（OM）

SEM（scanning electron microscope）

EDS（energy dispersive spectrometer）and XRD（X-ray diffraction）and DSC（differential scanning calorimeter）.The results reveal that a lot of nonequilibrium low-melting eutectic phase exist in the ascast microstructure of the alloy

and initial melting temperature reaches 475℃.As-cast microstructure is composed ofα-Al phase

η-MgZn2phase and minor Al7Cu2Fe phase.The alloy is totally composed ofα-Al phase after homogenized at above 460℃

which shows that the non-equilibrium low-melting eutectic phase can dissolve into the matrix entirely.Desirable effects of the alloy can be observed with homogenizing at 465℃for 24hours.

关键词

Al-Zn-Mg-Cu合金均匀化显微组织相组成

Keywords

Al-Zn-Mg-Cu AlloyHomogenizationMicrostructurePhase Constituent

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