期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.07.096
关键词
Equal-channel angular pressing; Hardness; Homogeneity; Magnesium alloy; Micro-tensile testing
类别
资金
- National Natural Science Foundation of China [51105102]
- National Science Foundation of the United States [DMR-1160966]
- China Postdoctoral Science Foundation [2012T50324]
- Scientific Research Foundation of Harbin Institute of Technology [HIT.2011.513]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1160966] Funding Source: National Science Foundation
A magnesium AZ31 alloy was processed by equal-channel angular pressing (ECAP) at a temperature of 473 K using a die with a channel angle of 110 degrees. The results show that an ultrafine-grained (UFG) microstructure is achieved with good hardness homogeneity after processing through 4 or more passes of ECAP. After 8 passes of ECAP, a grain size of similar to 1.0 mu m was achieved. Measurements show that the average value of the microhardness increases with increasing numbers of ECAP passes. The mechanical properties were evaluated using micro-tensile testing with specimens cut perpendicular to the longitudinal axes of the ECAP billets. These tests were conducted at room temperature and at 423 and 473 K and the results demonstrate a potential for using the UFG AZ31 alloy for applications in micro-forming technology. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据