焊管2016，Vol.39Issue(9)：13-18,6.DOI:10.19291/j.cnki.1001-3938.2016.09.003
2A12铝合金搅拌摩擦焊温度场及接头组织分析
Analysis on Temperature Field and Microstructure of 2A12 Aluminum Alloy Friction Stir Welding
摘要
Abstract
In order to get temperature filed dynamic evolution and the change rule of welding thermal cycle curve of 2A12 aluminum alloy during friction stir welding(FSW) process, explore the inner link between welding thermal effect and welded joint microstructure, a finite element numerical analysis model of FSW heat transfer process was established by using ANSYS. It carried out numerical analysis for 6 mm thickness 2A12 aluminum alloy FSW process, the microstructures in weld nugget zone (WNZ), thermo-mechanical affected zone (TMAZ), heat affected zone (HAZ) and base metal were observed, and the thermal effect and mechanical effect in different zones of welded joint were analyzed. The results showed that the weld nugget zone is the region within which the temperature during welding is higher than the re-crystallization temperature of the base metal, and the microstructure features of the upper and lower part of WNZ, TMAZ, and HAZ are related to different thermal and mechanical combined actions which have been experienced in the welding process.关键词
焊接/2A12铝合金/搅拌摩擦焊/温度场/焊核区/数值模拟Key words
welding/2A12 aluminum alloy/friction stir welding/temperature field/weld nugget zone/numerical simulation分类
矿业与冶金引用本文复制引用
万夫伟,郭新芳,赵明,卢新生,罗瑞霞..2A12铝合金搅拌摩擦焊温度场及接头组织分析[J].焊管,2016,39(9):13-18,6.基金项目
中央高校基本科研业务费专项资金资助项目(项目号CX2013048). （项目号CX2013048）
