某些高强度铝合金的淬火敏感性研究  

Study on Quenching Sensitivity of Certain High Strength Aluminum Alloys

作　　者：刘煜 刘静安 刘志铭 LIU Yu;LIU Jing-an;LIU Zhi-ming(Southwest Aluminum(Group)Co.,Ltd.,Chongqing 401326;GuangdongFenglu Aluminum Co.,Ltd.,Foshan 528133,China)

机构地区：[1]西南铝业(集团)有限责任公司,重庆401326 [2]广东凤铝铝业集团有限公司,广东523280

出　　处：《铝加工》2019年第5期58-61,共4页Aluminium Fabrication

摘　　要：研究了Al-Zn-Mg-Cu和Al-Cu-Mg系等可热处理强化高强度铝合金的淬火敏感性。实验研究和生产实践表明,与含有Cr和Mn的合金相比,含有Zr的热加工Al-Zn-Mg-Cu和Al-Cu-Mg等合金的淬火敏感性小。含有Zr(或Hf)的合金淬火敏感性随冷加工程度的增大而增大,这是因为冷加工试样内发生再结晶所导致的共格性降低,使得含有Zr(或Hf)的合金中的弥散体成为稳定相成核的场所。The quenching sensitivity of heat-treatable strengthening Al-Zn-Mg-Cu and Al-Cu-Mg alloys was studied.Experimental research and production practice show that,hot-processed Al-Zn-Mg-Cu andAl-Cu-Mgalloys containing Zr have less quenching sensitivity than the alloys containing Cr and Mn alloys.The quenching sensitivity containing Zr(or Hf)increase with the increase of cold working degree,due to the reduction of the coherency caused by recrystallization in the cold worked sample,such that the dispersion in the alloy containing Zr(or Hf)becomes the site of stable phase nucleation.

关 键 词：AL-ZN-MG-CU合金 AL-CU-MG合金 时效硬化 淬火敏感性 固溶处理 分步淬火 

分 类 号：TG1663[金属学及工艺—热处理] TG146.21[金属学及工艺—金属学]