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Hot compression deformation behavior and processing parameters of a cast Mg-Gd-Y-Zr alloy

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WOS被引频次:33
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成果类型:
期刊论文
作者:
Li, Li;Zhang, Xinming
通讯作者:
Li, L.(lileewin@yahoo.cn)
作者机构:
[ Zhang, Xinming ; Li, Li ] School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China
[Li, Li ] Department of Mechanical Engineering, Hunan Institute of Technology, Hengyang, Hunan 421002, China
通讯机构:
[Li, L] Hunan Inst Technol, Dept Mech Engn, Hengyang 421002, Hunan, Peoples R China.
语种:
英文
关键词:
Apparent activation energy - Deformation temperatures - High stress - Hot compression deformation - Hot deformation behaviors - Low stress - Mg-Gd-Y-Zr alloy - Process parameters - Processing maps - Processing parameters - Processing windows - Stain rates - Stress exponents - Thin-walled - Uni-axial compression - Uniaxial compression tests
期刊:
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN:
0921-5093
年:
2011
卷:
528
期:
3
页码:
1396-1401
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:材料科学;WOS学科类别:Materials Science, Multidisciplinary;Metallurgy & Metallurgical Engineering;Nanoscience & Nanotechnology
入藏号:
WOS:000286904300084;EI:20105113501225
基金类别:
National Security Basic Research Program, China [5133001E]
机构署名:
本校为第一且通讯机构
院系归属:
机械工程学院
材料与化学工程学院
摘要:
Hot deformation behavior and processing parameters of the cast Mg-9Gd-4Y-0.6Zr alloy were investigated in this paper. For the purposes, uniaxial compression tests were conducted at the temperatures ranging from 623K to 773K and strain rates ranging from 0.001s<sup>-1</sup> to 1s<sup>-1</sup>. The tests revealed that the apparent activation energy was 209kJmol<sup>-1</sup>, and that the stress exponents were 3.2 and 5.1 within the low stress regime and high stress regime, respectively. The processing-map technique was utilized to determine the practical processing window. The reasonable process parameters of the cast Mg-9Gd-4Y-0.6Zr alloy were deformation temperatures of 703-723K and stain rates of &Epsilon;&dot;=0.006-0.03 s-1. Moreover, the processing parameters were applied to isothermally forging a thin-walled cone used for a projectile head shell. &copy;2010 Elsevier B.V.
参考文献:
Al-Samman T, 2010, MAT SCI ENG A-STRUCT, V527, P3450, DOI 10.1016/j.msea.2010.02.008
Galiyev A, 2001, ACTA MATER, V49, P1199, DOI 10.1016/S1359-6454(01)00020-9
Kim WJ, 2001, ACTA MATER, V49, P3337, DOI 10.1016/S1359-6454(01)00008-8
Koike J, 2005, METALL MATER TRANS A, V36A, P1689, DOI 10.1007/s11661-005-0032-4
Li L, 2009, J ALLOY COMPD, V485, P295, DOI 10.1016/j.jallcom.2009.06.113

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