电焊机2018，Vol.48Issue(5)：26-30,5.DOI:10.7512/j.issn.1001-2303.2018.05.05
搅拌摩擦焊接中搅拌头自优化机理
Mechanism of tool self optimization in friction stir welding
摘要
Abstract
Based on the adaptive re-meshing technique,the fully coupled thermo-mechanical model of friction stir welding of AA6061 is established.The wear loss of welding tool is calculated by Archard equation.The temperature curve and equivalent strain rate are exacted to calculate the grain size and distributions in recrystallization after weld by use of Monte Carlo method.Results indicate that the equivalent strain rate is increased with the increase of wear,which can lead to the increase of nucleation.The grain sizes in the stirring zone can be then decreased.The service life and weld quality can be increased by appropriate wear.Certainly,excessive wear can lead to the decrease of weld quality.关键词
搅拌摩擦焊接/磨损/再结晶/自优化/搅拌头Key words
friction stir welding/wear/recrystallization/self optimization/welding tool分类
矿业与冶金引用本文复制引用
张昭,谭治军,白小溪..搅拌摩擦焊接中搅拌头自优化机理[J].电焊机,2018,48(5):26-30,5.基金项目
国家自然科学基金项目(11572074) （11572074）
中央高校基本科研业务费资助 （）
