Mn,Zn和Ag对Al-Mg-Li合金组织和性能的影响  

EFFECT OF Mn, Zn AND Ag ON THE MICROSTRUCTURES AND TENSILE PROPERTIES OF Al-Mg-Li ALLOYS

作　　者：田宝辉[1,2] 陆政 颜鸣皋 刘伯操 魏柄忱 

机构地区：[1]北京航空材料研究院 [2]北京航空航天大学

出　　处：《航空材料学报》1997年第4期25-30,共6页Journal of Aeronautical Materials

摘　　要：在Ａｌ－Ｍｇ－Ｌｉ合金中加入Ｍｎ，Ｚｎ和Ａｇ元素，提高了合金的时效硬化程度和拉伸强度，穿晶断裂的比例增加，塑性稍有降低。这些变化与形成Ａｌ６Ｍｎ粒子和Ａｇ，Ｚｎ在δ′粒子中富集有联系。The effect of Mn, Zn and Ag on microstructures and tensile properties of AlMgLi alloys was investigated. The results show that the extent of age hardening and the tensile strength increase, while the plasticity decreases accompanied by increasing transgranular fracture when adding these elements. These behaviors could be related to enrichment of Zn, Ag in δ′ particles and formation of Al6Mn precipitates, respectively.

关 键 词：拉伸性能 显微组织 铝锂合金 锰 锌 银 改性 

分 类 号：TG146.21[一般工业技术—材料科学与工程]