Enhanced mechanical properties due to grain refinement and texture modification in an AZ61 Mg alloy processed by small strain impact forging

被引：71
作者：
Jiang, M. G. [1 ,2 ]
Yan, H. [1 ]
Chen, R. S. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, Shenyang 110016, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 621卷
关键词：
Magnesium alloy; Small strain impact forging; Texture; Grain refinement; Mechanical properties; AZ31 MAGNESIUM ALLOY; MG-3AL-1ZN ALLOY; DYNAMIC RECRYSTALLIZATION; MICROSTRUCTURAL EVOLUTION; DEFORMATION-BEHAVIOR; TENSILE PROPERTIES; ROOM-TEMPERATURE; HOT DEFORMATION; HEAT-TREATMENT; ZN ALLOY;
D O I：
10.1016/j.msea.2014.10.075
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A newly proposed small strain impact multi-directional forging (SSIMDF) was successfully applied to a commercial AZ61 magnesium alloy. This study demonstrates that SSIMDF combined with aging is a simple and highly efficient approach to synchronously enhance strength and ductility. SSIMDF resulted in a full recrystallized microstructure with an average grain size of 16 jam and much weakened double-peak texture, thereby significantly enhancing the tensile properties. The SSIMDFed sample exhibited an ultimate tensile strength CUTS) of 310 MPa and an elongation of 26%. The subsequent aging treatment further enhanced the UTS up to 327 MPa with a reduction of elongation to 19% due to lots of beta-Mg17Al12 precipitation. (C) 2014 Elsevier B.V. All rights reserved.
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收藏
页码：204 / 211
页数：8
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