Evolution of the microstructure and mechanical properties of AZ61 alloy processed by half channel angular extrusion (HCAE), a novel severe plastic deformation process

被引：21
作者：
Kim, Kyungjin [1 ]
Yoon, Jonghun [2 ]
机构：
[1] Kyungil Univ, Sch Mech & Automot Engn, Gyongsan 712701, Gyeongbuk, South Korea
[2] KIMS, Chang Won 642831, Gyeongnam, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 578卷
基金：
新加坡国家研究基金会;
关键词：
Severe plastic deformation; Mg formability; AZ61; Half channel angular extrusion (HCAE); COMMERCIALLY PURE ALUMINUM; HIGH-PRESSURE TORSION; AZ31 MAGNESIUM ALLOY; BONDING ARB PROCESS; TENSILE PROPERTIES; GRAIN-REFINEMENT; MULTIPASS ECAP; MG ALLOY; TEMPERATURE; SIZE;
D O I：
10.1016/j.msea.2013.04.073
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A new concept of severe plastic deformation (SPD) process is introduced. The proposed process, named half channel angular extrusion (HCAE), which is the integration of equal channel angular extrusion (ECAE) and the conventional forward extrusion process in order to enhance the formability and mechanical properties of Mg alloys. This paper focuses on the performance of HCAE process with extruded AZ61 alloy at elevated temperature in grain refinement and the improvement of mechanical properties, and this performance was evaluated through an OIM experiment using EBSD. The results show that the proposed HCAE process not only improves the efficiency of the SPD process with only one pass but also increase the elongation and hardness dramatically. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：160 / 166
页数：7
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