Influence of microstructure on tensile properties and fatigue crack growth in extruded magnesium alloy AM60

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	Influence of microstructure on tensile properties and fatigue crack growth in extruded magnesium alloy AM60
	R. C. Zeng; E. H. Han; W. Ke; W. Dietzel; K. U. Kainer; A. Atrens
	2010
发表期刊	International Journal of Fatigue
ISSN	0142-1123
卷号	32 期号:2 页码:411-419
摘要	The microstructure, mechanical properties and fatigue crack propagation (FCP) of extruded magnesium alloy AM60 were investigated and compared with rolled AM60. The extruded AM60 has an inhomogeneous microstructure characterized by alpha-matrix, beta phases and Al-Mn precipitates and denuded zones as well, whereas rolled AM60 has fine grains. The change in strain-hardening exponent of extruded AM60 with strain rate is ascribed to inhomogeneous microstructure. In situ double twinning: (10 (1) over bar2) - (01 (1) over bar2) and {10 (1) over bar1} - {10 (1) over bar2} occurred during FCP of extruded alloy. Its crack initiation and growth are related to slip bands, double twinning and intermetallic compounds. Small cracks resulted from oxide and intermetallic compounds in rolled AM60 may be responsible for oscillatory crack growth and crack arrest. Extruded AM60 has a slower FCP rate than rolled one. (C) 2009 Elsevier Ltd. All rights reserved.
部门归属	[zeng, rongchang] chongqing univ technol, chongqing 400050, peoples r china. [zeng, rongchang; han, enhou; ke, wei] chinese acad sci, inst met res, shenyang 110016, peoples r china. [dietzel, wolfgang; kainer, karl ulrich] gkss forschungszentrum geesthacht gmbh, d-21502 geesthacht, germany. [atrens, andrejs] univ queensland, div mat, brisbane, qld 4072, australia.;zeng, rc (reprint author), chongqing univ technol, xingsheng rd 4, chongqing 400050, peoples r china;rczeng2001@yahoo.com.cn
关键词	Magnesium Alloy Intermetallic Compounds Microstructure Strain-hardening Exponent Fatigue Crack Growth High-cycle Fatigue Propagation Behavior Mg Alloys Az31 Deformation Compression Textures
URL	查看原文
WOS记录号	WOS:000272295900022
引用统计	被引频次：57[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31672
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. C. Zeng,E. H. Han,W. Ke,et al. Influence of microstructure on tensile properties and fatigue crack growth in extruded magnesium alloy AM60[J]. International Journal of Fatigue,2010,32(2):411-419.
APA	R. C. Zeng,E. H. Han,W. Ke,W. Dietzel,K. U. Kainer,&A. Atrens.(2010).Influence of microstructure on tensile properties and fatigue crack growth in extruded magnesium alloy AM60.International Journal of Fatigue,32(2),411-419.
MLA	R. C. Zeng,et al."Influence of microstructure on tensile properties and fatigue crack growth in extruded magnesium alloy AM60".International Journal of Fatigue 32.2(2010):411-419.