Simulation of temperature and stress in 6061 aluminum alloy during online quenching process  

6061铝合金在线淬火温度场和应力场模拟(英文)

作　　者：王孟君[1,2] 杨刚[1] 黄长清[2] 陈彬[1] 

机构地区：[1]中南大学有色金属材料科学与工程教育部重点实验室,长沙410083 [2]中南大学高性能复杂制造国家重点实验室,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第7期2168-2173,共6页中国有色金属学报（英文版）

基　　金：Project(zzyjkt2013-10B)supported by the Foundation of State Key Laboratory of High-performance&Complicated Manufacturing,China;Project(51275533)supported by the National Natural Science Foundation of China

摘　　要：The cooling curves of 6061 aluminum alloy were acquired through water quenching experiment. The heat transfer coefficient was accurately calculated based on the cooling curves and the law of cooling. The online quenching process of complex cross-section profile was dynamically simulated by the ABAQUS software. The results suggest that the heat transfer coefficient changes during online quenching process. Different parts of the profile have different cooling velocity, and it was verified by water quenching experiment. The maximum residual stress of the profile was predicted using FEM simulation based on ABAQUS software The relations between the temperature and stress were presented by analyzing the data of key points.通过淬火实验获得6061铝合金的冷却曲线,实验根据冷却曲线并结合数值方法获得在线淬火换热系数,运用ABAQUS有限元软件动态模拟复杂截面型材在线淬火过程。结果表明:在淬火过程中,换热系数不断变化;型材不同部位冷却速度不同,并通过淬火实验加以验证。通过ABAQUS有限元软件可以预测型材的最大残余应力;通过关键点的分析得出型材温度与应力的关系曲线。

关 键 词：6061 aluminum alloy QUENCHING complex cross-section profile  residual stress ABAQUS 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG156.3[金属学及工艺—金属材料]