摘要
通过分析对比探究预处理(包含预时效及预拉伸)对6082铝合金时效后型材力学性能及导电率的影响,并阐明了预处理对时效后铝合金导电率和力学性能的影响机理。结果表明,离线固溶处理导致型材表层极易发生再结晶和晶粒长大。固溶态样品随即进行拉伸,应力-应变曲线观察到PLC(Portevin-Le Chatelier)现象。型材预处理(预变形+预时效)后导电率下降,时效前(预处理后停放6 h)导电率有所增加,时效后导电率显著增加。
Effect of pre-treatment,including pre-aging and pre-tensile deformation,on mechanical properties and conductivity of 6082 aluminium alloy after aging was investigated through analysis and comparison,and the effect mechanism of pre-treatment on conductivity and mechanical properties of the tested alloy after aging was elucidated.The results show that the recrystallization and grain growth are easy to be induced in the surface layers of profiles by the off-line solution treatment,and then when the solution treated specimens are stretched,the PLC(Portevin-Le Chatelier) phenomenon is observed in the stress-strain curve.The conductivity of the profiles decreases after pre-treatment(pre-deformation and pre-aging),increases before aging(placed for 6 h after pre-treatment),and then significantly increases after aging.
作者
胡武
吴艳梅
黄显赞
黄炎毅
廖斌
Hu Wu;Wu Yanmei;Huang Xianzan;Huang Yanyi;Liao Bin(Alnan Aluminum Co.,Ltd.,Nanning Guangxi 530031,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2023年第7期143-147,共5页
Heat Treatment of Metals
基金
2022年广西科技基地人才专项(桂科AD22035005)
南宁市科学研究与技术开发计划(20221028)。
关键词
6082铝合金
预处理
力学性能
导电率
6082 aluminium alloy
pre-treatment
mechanical properties
conductivity
