Superplasticity of magnesium alloy ZK40 processed by equal channel angular pressing

被引：1
作者：
Yang, L [1 ]
Yang, XM
Liu, T
Wu, SD
Chen, LJ
机构：
[1] Shenyang Univ Technol, Dept Mat Sci & Engn, Shenyang 110023, Peoples R China
[2] Chinese Acad Sci, Met Res Inst, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS | 2005年 / 488-489卷
关键词：
ECAP; MZK40; grain refinement; superplasticity;
D O I：
10.4028/www.scientific.net/MSF.488-489.575
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The superplasticity and microstructure of magnesium alloy ZK40 processed by ECAP for I and 4 passes were investigated. Tensile experiments at 523 K showed that the elongation of ZK40 was improved with the increasing passes. The elongation-to-failure of ZK40 processed by ECAP for 4 passes tested at 523 K and strain rate of 1X10(4)S(-1) was 660%. The microstructural analyses explained these results.
引用
收藏
页码：575 / 579
页数：5
相关论文
共 19 条
[1]   Microstructural evolution during formation of ultrafine grain structures by severe deformation [J].
Bowen, JR ;
Prangnell, PB ;
Humphreys, FJ .
MATERIALS SCIENCE AND TECHNOLOGY, 2000, 16 (11-12) :1246-1250
[2]  
HANSEN N, 1990, MATER SCI TECH-LOND, V6, P1039, DOI 10.1179/026708390790189993
[3]   Superplastic forming at high strain rates after severe plastic deformation [J].
Horita, Z ;
Furukawa, M ;
Nemoto, M ;
Barnes, AJ ;
Langdon, TG .
ACTA MATERIALIA, 2000, 48 (14) :3633-3640
[4]   High angle boundaries formed by grain subdivision mechanisms [J].
Hughes, DA ;
Hansen, N .
ACTA MATERIALIA, 1997, 45 (09) :3871-3886
[5]   The process of grain refinement in equal-channel angular pressing [J].
Iwahashi, Y ;
Horita, Z ;
Nemoto, M ;
Langdon, TG .
ACTA MATERIALIA, 1998, 46 (09) :3317-3331
[6]   An investigation of microstructural evolution during equal-channel angular pressing [J].
Iwahashi, Y ;
Horita, Z ;
Nemoto, M ;
Langdon, TG .
ACTA MATERIALIA, 1997, 45 (11) :4733-4741
[7]   Mechanical properties and microstructures of an AZ61 Mg Alloy produced by equal channel angular pressing [J].
Kim, WJ ;
An, CW ;
Kim, YS ;
Hong, SI .
SCRIPTA MATERIALIA, 2002, 47 (01) :39-44
[8]   Mechanical properties of a two-phase alloy Mg-8%Li-1%Al processed by equal channel angular pressing [J].
Liu, T ;
Zhang, W ;
Wu, SD ;
Jiang, CB ;
Li, SX ;
Xu, YB .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 360 (1-2) :345-349
[9]   In situ composites processed by simple shear [J].
Segal, VM ;
Hartwig, KT ;
Goforth, RE .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 224 (1-2) :107-115
[10]   Equal channel angular extrusion: from macromechanics to structure formation [J].
Segal, VM .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 271 (1-2) :322-333
12