Microstructure and Mechanical Properties of Al-5Cu-4.5Mg-2.5Zn Squeeze Cast Alloy

作     者：SUN Yonggen WANG Yanchun SU Yanni SONG Xujie DU Lanjun CHENG Yuansheng DU Zhiming 孙永根;WANG Yanchun;SU Yanni;SONG Xujie;DU Lanjun;CHENG Yuansheng;杜之明

作者机构：National Key Laboratory for Precision Hot Processing of MetalsHarbin Institute of TechnologyHarbin150001China School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin150001China Beijing North Vehicle Group Co.Ltd.Beijing100072China Beijing Aerospace Propulsion InstituteBeijing100076China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2022年第37卷第5期

页      面：977-985页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Funded by the International Cooperation Project of the Ministry of Science and Technology of China (No. 2014DFR50320) the National Natural Science Foundation of China (No. 51174064) 

主　　题：Al-Cu-Mg-Zn alloy squeeze casting heat treatments second phases mechanical properties 

摘      要：Al-5Cu-4.5Mg-2.5Zn alloy was prepared and the alloy ingots were fabricated by squeeze casting in this *** these negative effects of composition segregation and coarse second phases,some heat treatments were adopted in this ***,element distribution,phase constitutions and mechanical properties of Al-5Cu-4.5Mg-2.5Zn alloy ingots before and after heat treatments were *** was discovered that these heat treatments would influence and extremely optimize the microstructures and properties of Al-5Cu-4.5Mg-2.5Zn *** some residual S (Al_(2)CuMg) phase and a few of η phase,the precipitate free zone (PFZ) and the Guinier Preston zone (GPZ) formed in the *** was also found that θ′′ (Al_(2)Cu) and η′′ (MgZn_(2)) phases formed and kept a consistent relationship with the aluminum *** the result,these properties of ultimate tensile strength (UTS),percentage of elongation and Brinell hardness (HB) were greatly *** UTS,percent of elongation and HB were 469 MPa,8.1% and 208 N/mm^(2),respectively.