文献类型：期刊文献

中文题名：预应变和热处理对AZ31镁合金形变行为的影响（英文）

英文题名：Influence of pre-strain and heat treatment on subsequent deformation behavior of extruded AZ31 Mg alloy

作者：陈红兵 刘天模 卢立伟 何杰军 翟彦博

第一作者：陈红兵

通信作者：Liu, TM[1]

机构：[1]重庆大学材料科学与工程学院;[2]西南大学工程技术学院;[3]湖南科技大学机电工程学院;[4]中南大学材料科学与工程学院;[5]贵州理工学院材料与冶金工程学院

第一机构：重庆大学材料科学与工程学院,重庆400044

通信机构：corresponding author), Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China.

年份：2015

卷号：0

期号：11

起止页码：3604-3610

中文期刊名：中国有色金属学报：英文版

外文期刊名：TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA

收录：CSTPCD;;EI(收录号：20160301818826);Scopus(收录号：2-s2.0-84954286088);WOS:【SCI-EXPANDED(收录号:WOS:000368040600012)】；CSCD:【CSCD2015_2016】；

基金：Project (XDJK2013C106) supported by the Fundamental Research Funds for the Central Universities of China; Project (51201140) supported by the National Natural Science Foundation of China

语种：中文

中文关键词：AZ31镁合金;孪生;退火硬化;预压缩;热处理;形变

外文关键词：AZ31 Mg alloys;;twinning;;annealing hardening;;pre-compression;;heat treatment;;deformation

摘要：对挤压态AZ31镁合金进行预压缩和热处理,研究预压缩和热处理对其形变行为的影响。结果表明:在低温下退火(170℃退火4 h),试样经过退火处理或未经退火处理的几乎具有相等的屈服强度(~148 MPa),这是由于它们的显微组织几乎没有变化。然而在相同退火条件下,经预压缩并退火的试样的屈服强度(~225 MPa)高于只有预压缩试样的屈服强度(~200 MPa)。由于溶质原子在孪晶界偏析引起强化,前者显示出退火硬化效应。预压缩试样在400℃退火1h后,其伸长率(~28%)高于预压缩试样的伸长率(~15%),但其屈服强度(~125 MPa)低于预压缩试样的屈服强度(~200 MPa)。
Pre-compression and heat treatment were performed on an extruded AZ31 Mg alloy,and their effects on subsequent deformation behavior were investigated.The results show that at low temperature annealing(170 ℃ for 4 h),the extruded samples with and without annealing exhibit a nearly equivalent yield stress(~148 MPa) because their microstructures are nearly unchanged.However,under the same annealing condition,the yield stress of sample with pre-twinning and subsequent annealing(~225 MPa) is higher than that of the pre-twinned one(~200 MPa).The former sample presents a hardening effect because the solute atoms segregated on twin boundaries lead to a strengthening effect.The pre-twinned sample annealed at 400 ℃ for 1 h shows a higher ultimate elongation(~28%) than the pre-twinned one(~15%),but its yield stress(~125 MPa) is much lower than that of the pre-twinned one(~200 MPa).