期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.09.001
关键词
Al-Cu alloy; High-pressure torsion; Homogeneity; Multi-axial compression; Ultrafine grains
类别
资金
- National Key Fundamental Research Project of China [012CB619506-2]
- European Research Council under ERC Grant [267464-SPDMETALS]
An Al-4% Cu alloy was selected as a model material in order to compare two different procedures for imposing severe plastic deformation: multi-axial compression (MAC) and high-pressure torsion (HPT). In MAC a compressive strain is applied to prismatic samples in a sequential order along three orthogonal directions and the process is repeated to large numbers of passes in order to attain high strains. In HPT a thin disk is held between anvils and subjected to a high applied pressure and concurrent torsional straining. The results show that HPT is the optimum procedure for producing a homogeneous ultrafine-grained material. Specifically, HPT is preferable because it produces materials having a larger degree of homogeneity and the equilibrium grain sizes are smaller and the Vickers microhardness values are higher than when processing by MAC. (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