固溶处理对新型铝锂合金组织和性能的影响  

Effects of solution treatment on microstructure and properties of a aluminum-lithium alloy

作　　者：李华冠[1] 陶杰[1] 孙中刚 刘红兵 王文涛[1] 骆心怡[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京211106 [2]上海飞机制造有限公司,上海200436

出　　处：《金属热处理》2013年第3期74-76,共3页Heat Treatment of Metals

基　　金：国家商用飞机制造工程技术研究中心创新基金

摘　　要：对新型铝锂合金进行不同工艺固溶处理+165℃×20 h单级人工时效,研究固溶温度和时间对新型铝锂合金组织和性能的影响。结果表明,随固溶温度的升高,合金弥散析出的第二相不断长大,新型铝锂合金的抗拉强度和屈服强度有所提升,塑性、韧性下降;固溶时间对合金强度和塑性的影响较小。535℃×30 min固溶处理后,综合力学性能较好。Effects of solution temperature and time on microstructure and properties of a new aluminum-lithium alloy were investigated by different solution treatment and 165 ~C x 20 h aging. The results show that with solution temperature increasing, dispersion precipitation second phase of the alloy grows up, tensile strength and yield strength increase, plasticity and toughness decrease. Solution time effects a little on strength and plasticity. Comprehensive mechanical properties of the alloy solutioned at 535 ~C for 30 min are better.

关 键 词：新型铝锂合金 固溶处理 组织性能 

分 类 号：TG166.3[金属学及工艺—热处理]