3003铝合金多道次热轧工艺的实验模拟  

EXPERIMENTAL SIMULATION OF MULTIPASS HOT ROLLING PROCESS OF 3003 ALUMINUM ALLOY

作　　者：张辉[1,2] 钟华萍[1,2] 彭大暑[1,2] 

机构地区：[1]中南工业大学材料科学与工程系 [2]南方冶金学院

出　　处：《中南工业大学学报》1999年第4期407-410,共4页Journal of Central South University of Technology(Natural Science)

基　　金：美国ALUMAX铝业公司国际合作项目

摘　　要：参照美国某铝业公司热轧工艺规程，在Ｇｌｅｅｂｌｅ１５００热模拟机上，对３００３铝合金多道次热轧过程进行了实验模拟，通过对变形后试样的金相组织与ＴＥＭ观察及显微硬度测量，发现亚晶的形成与再结晶不仅取决于轧制温度，而且还与铸锭均匀化处理工艺、变形不均匀带、累积变形量及道次间停留时间有关．均匀化Ａ处理（单级均匀化：５００℃）与Ｂ处理（两级均匀化：６００→５００℃）相比，前者由于产生细小弥散的第二相粒子，致使亚晶的形成与再结晶在整个热轧过程中都相应地减弱．Multipass hot rolling process of 3003 aluminum alloy was simulated on Gleeble 1500 according to a typical procedure. The deformed specimens were analysed by the observation of optical micrography and TEM, and the measurement of micro hardness. The results show that the formation of subgrains and recrystallization not only depend on the rolling temperature, but also on the homogenization of cast, the inhomogeneous deformation band, the accumlated strain and pause times between passes. The two step B homogenization at 600 →500 ℃ brings about larger particles than A homogenization at 500 ℃, thus the formation of subgrains and recrystallization occur easily during multipass hot rolling of 3003 aluminum alloy.

关 键 词：均匀化 多道次热轧 亚结构 再结晶 铝合金 

分 类 号：TG335.11[金属学及工艺—金属压力加工] TG337