High cycle fatigue properties of die-cast magnesium alloy AZ91D-1%MM

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	High cycle fatigue properties of die-cast magnesium alloy AZ91D-1%MM
	Y. L. Xu; K. Zhang; X. G. Li; J. Lei; Y. S. Yang; T. J. Luo
	2008
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	18 页码:S306-S311
摘要	The high cycle fatigue properties of the die-cast magnesium alloy AZ91D containing 1% mischmetal (mass fraction) at a fatigue ratio of 0.1 were investigated. The difference in the microstructure between the skin and core region of the die-cast magnesium alloy was analyzed by optical microscopy. The mechanical property tests indicate that the values of the tensile strength, elongation and hardness are 185 MPa, 1.5% and HBS 70 +/- 3 at room temperature, respectively. The p-S-N curve (p=50%) of the die-cast magnesium alloy AZ91D-1%MM is determined and the mean fatigue strength corresponding to 3.8 X 10(5) cycles is 70 MPa. A linear relation between S and N(p) in log scale between 10(3) and 10(6) cycles is written with a equation. The mechanical properties are influenced by the casting defects. The fatigue life of the samples with minor defects is near to the upper limit of the fatigue life data. The fatigue fracture surface of the samples with minor defects possesses the mixed characteristics of quasi-cleavage, lacerated ridge and dimple and it is brittle fracture mode as a whole.
部门归属	[xu yu-lei; zhang kui; li xing-gang] gen res inst nonferrous met, state key lab fabricat & proc nonferrous met, beijing 100088, peoples r china. [lei jian] dongfeng motor co ltd, mat technol inst, cvtc, shiyan 442001, peoples r china. [yang yuan-sheng; luo tian-jiao] chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhang, k (reprint author), gen res inst nonferrous met, state key lab fabricat & proc nonferrous met, beijing 100088, peoples r china;kaoscong@yahoo.com.cn
关键词	Magnesium Alloy Die Casting High Cycle Fatigue Rare Earths Fractography Mechanical-properties Microstructure Az91d
URL	查看原文
WOS记录号	WOS:000262155200060
引用统计	被引频次：14[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/321006/33255
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. L. Xu,K. Zhang,X. G. Li,et al. High cycle fatigue properties of die-cast magnesium alloy AZ91D-1%MM[J]. Transactions of Nonferrous Metals Society of China,2008,18:S306-S311.
APA	Y. L. Xu,K. Zhang,X. G. Li,J. Lei,Y. S. Yang,&T. J. Luo.(2008).High cycle fatigue properties of die-cast magnesium alloy AZ91D-1%MM.Transactions of Nonferrous Metals Society of China,18,S306-S311.
MLA	Y. L. Xu,et al."High cycle fatigue properties of die-cast magnesium alloy AZ91D-1%MM".Transactions of Nonferrous Metals Society of China 18(2008):S306-S311.