小应变条件下终轧速度对AZ31镁合金板材组织与性能的影响  

Effect of Final Rolling Speed on Microstructure and Performance of AZ31 Magnesium Alloy Sheet under Small Strain Condition

作　　者：宋登辉 周涛[1,2] 蒋伟[1] 范恒瑞[1] 

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400054 [2]重庆理工大学重庆市模具工程技术研究中心,重庆400054

出　　处：《热加工工艺》2016年第23期118-121,共4页Hot Working Technology

基　　金：国家自然科学青年基金项目(51301213);重庆市基础与前沿研究计划项目(cstc2014jcyj A50008)

摘　　要：研究了小应变条件下(5%),终轧速度(0.1、0.2、0.4 m/s)对AZ31镁合金板材微观组织、晶粒取向、力学性能及成形性能的影响。结果表明:小应变轧制条件下,随着终轧速度的增加,板材的晶粒尺寸显著增加,基面晶粒取向略有减弱,板材室温埃里克森(IE)值从4.1 mm提高到4.6 mm。对高温小应变轧制板材中依然存在一些孪晶的原因以及室温成形性能略有提升的原因进行了讨论。The influences of the final rolling speed （0.1, 0.2, 0.4 m/s） on microstructure, crystal orientation, mechanical properties and formability of AZ31 magnesium alloy sheet were investigated under small strain condition （5%）. The results show that： under small strain rolling condition, with the increase of the final rolling speed, the grain size of the sheet increases significantly, the basal crystal orientation is slightly weakened, and room temperature Erickson （IE） value increases from 4.1 mm to 4.6 mm. The reasons of that there were still some twins in the small strain rolled sheets and room temperature forming performance was slightly increased were discussed.

关 键 词：AZ31合金 小应变轧制 轧制速度 力学性能 成形性能 

分 类 号：TG339[金属学及工艺—金属压力加工]