1235铝合金均匀化退火晶粒长大动力学研究  

Grain growth kinetics of 1235 aluminum alloy during homogenizing annealing

作　　者：谭国寅[1] 岳有成[1] 曹瑞珂[1] 杨钢[1] 马宁 

机构地区：[1]昆明冶金研究院,云南昆明650503 [2]云南省浩鑫铝箔有限公司,云南昆明650216

出　　处：《金属热处理》2016年第7期104-106,共3页Heat Treatment of Metals

基　　金：国家高技术研究发展计划(863计划)(2013AA030803);云南省应用基础研究重大项目(2013FC010)

摘　　要：用金相显微镜研究了1235铝合金不同时间均匀化退火后的显微组织。利用Beck方程描述了整个晶粒长大过程。结果表明:晶粒尺寸随退火时间的延长而长大,当退火时间达到3 h后,晶粒的长大逐渐停止,再结晶过程结束;获得了等温加热过程晶粒长大动力学方程,晶粒尺寸方程计算值与实测值的符合较好,表明基于该方程来预测不同退火时间后的晶粒尺寸是可行的。The microstructure of 1235 aluminum alloy under different annealing time was studied by means of optical microscope. The full grain growth process was described by Beck formula. The results show that the grain size increases with the increase of annealing time. The grain growth gradually stops increasing when the annealing time reaches 3 h and the recrystallization is over. The grain growth kinetics formula is obtained,calculation results based on kinetics formula and real grain size fit well,which mean the forecast results of grain size after different annealing time based on grain growth kinetics formula are reliable.

关 键 词：1235铝合金 均匀化退火 晶粒尺寸 动力学方程 

分 类 号：TG166.3[金属学及工艺—热处理]