Evolution of microstructures in severely deformed AA 3104 aluminum alloy by multiple constrained compression

被引：18
作者：
Liu, W. C. [1 ]
Chen, M. B. [1 ]
Yuan, H. [1 ]
机构：
[1] Yanshan Univ, Key Lab Metastable Mat Sci & Technol, Coll Mat Sci & Engn, Qinhuangdao 066004, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 16-17期
关键词：
Aluminum alloys; Multiple constrained compression; Electron microscopy; Microstructure; Ultra-fine grain; SEVERE PLASTIC-DEFORMATION; BULK NANOSTRUCTURED MATERIALS; REPETITIVE CORRUGATION; MECHANICAL-PROPERTIES; CYCLIC-EXTRUSION; GRAIN-REFINEMENT; ECAP;
D O I：
10.1016/j.msea.2011.03.100
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
AA 3104 aluminum alloy was severely deformed by multiple constrained compression in a channel die set-up. The evolution of microstructures during deformation was investigated by transmission electron microscopy. The flow stress in multiple constrained compression initially increases markedly with strain and then increases gradually. Large scale shear bands and the evidence for strain localization are observed. The microstructure consists of dislocation cells and extended boundaries after two passes to a strain of 0.86, while a cell block structure with high-angle lamellar boundaries is formed after eight passes to a strain of 3.56. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：5405 / 5410
页数：6
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