期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2018.05.101
关键词
Multi-scale lamellar structure; Back stress; Al alloy; Strength; Ductility
类别
资金
- National Natural Science Foundation of China [51421001]
- International Science & Technology Cooperation Program of China [2014DFA51270]
By the method of cold rolling, appropriate intermediate annealing and final annealing treatments, the multi scale lamellar structure of ultrafine grains distributed in ribbons with coarse grains was produced in an Al-1.2Mn alloy, which displayed excellent combination of high strength and good ductility compared to coarse-grained and ultrafine-grained alloys. The high strength of the alloy with multi-scale lamellar structure is attributed to back stress strengthening associated with the formation of geometrically necessary dislocations and the good ductility results from the high strain hardening rate during plastic deformation. Loading-unloading-reloading tests were carried out to measure the back stresses of the alloys. The results show that the back stress of the specimen with multi-scale lamellar structure is much higher than that of the coarse-grained specimen.
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