Cyclic deformation behaviour and fatigue crack propagation in AZ91HP and AM50HP

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	Cyclic deformation behaviour and fatigue crack propagation in AZ91HP and AM50HP
	Z. Liu ; Z. G. Wang ; Y. Wang ; L. H. Chen ; H. J. Zhao ; F. Klein
刊名	Materials Science and Technology
	2001
卷号	17 期号:3 页码:264-268
关键词	magnesium alloy
ISSN号	0267-0836
中文摘要	The purpose of the present work was to investigate room temperature cyclic deformation and crack propagation behaviour in the most widely used die casting magnesium alloy AZ91HP with different heat treatments. In addition, examination of the low cycle fatigue properties of solid solution treated alloy AZ91HP-T4 was emphasised in comparison with AM50HP. Obvious cyclic strain hardening was found in low cycle fatigue tests, especially for AZ91HP-T4 at high cyclic strain amplitudes. Nevertheless, it was very difficult to evaluate differences in low cycle fatigue behaviour between die casting alloy AZ91HP-F, artificially aged alloy AZ91HP-T6, solution treated alloy AZ91HP-T4, and AM50HP(-F) because of the scatter of test data. However, it may be concluded that the last two alloys had greater plastic strain components during cyclic deformation, and AZ91HP-T4 exhibited a longer fatigue life than that of AM50HP at the highest strain amplitude. According to results of tests carried out on AZ91HP compact tension (CT) specimens, it was concluded that solution treatment could reduce the fatigue crack propagation rate, and plasticity induced crack closure was considered to have a predominant effect on fatigue crack propagation.
原文出处	://WOS:000167855300004
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/36730]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Liu,Z. G. Wang,Y. Wang,et al. Cyclic deformation behaviour and fatigue crack propagation in AZ91HP and AM50HP[J]. Materials Science and Technology,2001,17(3):264-268.
APA	Z. Liu,Z. G. Wang,Y. Wang,L. H. Chen,H. J. Zhao,&F. Klein.(2001).Cyclic deformation behaviour and fatigue crack propagation in AZ91HP and AM50HP.Materials Science and Technology,17(3),264-268.
MLA	Z. Liu,et al."Cyclic deformation behaviour and fatigue crack propagation in AZ91HP and AM50HP".Materials Science and Technology 17.3(2001):264-268.