大连理工大学主页平台管理系统付雪松 A mechanism study on characteristic curve of residual stress field in Ti-6Al-4V induced by wet peening treatment 中文主页

论文成果

Multi-pass large strain rolling of as-cast AZ31 magnesium alloy: 点击次数：; 发布时间： 2019-03-13; 发布时间：2019-03-13; 论文类型：期刊论文; 发表时间：2016-12-11; 发表刊物：MATERIALS SCIENCE AND TECHNOLOGY; 收录刊物：Scopus、EI、SCIE; 卷号：32; 期号：18; 页面范围：1869-1876; ISSN号：0267-0836; 关键字：Multi-pass; Dynamic recrystallisation; Grain refinement; Fracture mode; Large strain rolling; 摘要：As-cast AZ31 magnesium alloy subjected to multi-pass large strain rolling was investigated. A successive rolling process up to three passes was carried out at 370 degrees C with a pass reduction of 30%. Deformation microstructure characteristics prove that the dynamic recrystallisation (DRX) mode changed with the increase of rolling passes. In the first pass, DRX related to twinning played a dominant role. But in the third pass, DRX grains mainly appeared around the pre-existing grain boundaries. The ultimate strength and elongation of rolled sheets after three passes rolling are enhanced by 37 and 39%, respectively, compared to the as-cast alloy. Meanwhile, the tensile fracture mode was ductile fracture which was different from the ductile-brittle fracture of as-cast.

上一条： A mechanism study on characteristic curve of residual stress field in Ti-6Al-4V induced by wet peening treatment

下一条：High temperature deformation of non-directionally solidified Al2O3/YAG/

副教授博士生导师硕士生导师

性别：男

毕业院校：大连理工大学

学位：博士

所在单位：材料科学与工程学院

学科：材料加工工程

办公地点：大连理工大学铸造中工程心

电子邮箱：