High-Cycle Fatigue Behavior and Damage Mechanism of Multiphase Al-Si Piston Alloy at Room and Elevated Temperatures

doi:10.1002/adem.201700972

CORC > 金属研究所 > 中国科学院金属研究所

	High-Cycle Fatigue Behavior and Damage Mechanism of Multiphase Al-Si Piston Alloy at Room and Elevated Temperatures
	Liu, Haiquan 1,2; Pang, Jianchao 2; Wang, Meng 1,2; Li, Shouxin 2; Zhang, Zhefeng 1,2
刊名	ADVANCED ENGINEERING MATERIALS
	2018-06-01
卷号	20 期号:6 页码:9
关键词	Al-Si piston alloy Fatigue damage mechanism Fatigue strength High-cycle fatigue Tensile strength
ISSN号	1438-1656
DOI	10.1002/adem.201700972
通讯作者	Pang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
英文摘要	Microstructure evolution, tensile properties, fatigue crack initiation and propagation behaviors, and corresponding damage mechanisms of a multiphase cast Al-Si alloy used for pistons at room temperature (RT), 350 and 425 degrees C are investigated. The results show that tensile and fatigue strengths decrease with the increase of temperature. Casting defects such as pores and oxide films are the most preferential sites for fatigue initiation at all the temperatures. The preferential propagation path for fatigue crack is mainly through the Al matrix and second phases at room temperature, through Al matrix at 350 degrees C, and along grain boundary and phase/matrix interface at 425 degrees C. This may be attributed to the reduction of strengths of matrix and phase/matrix interface at elevated temperatures. Relationship between fatigue strength and defect size is also discussed using critical stress intensity factor and probability distribution of defect size.
资助项目	National Natural Science Foundation of China (NSFC)[51331007]
WOS研究方向	Materials Science
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000435928600016
资助机构	National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/128689]
专题	金属研究所_中国科学院金属研究所
通讯作者	Pang, Jianchao; Zhang, Zhefeng
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, Haiquan,Pang, Jianchao,Wang, Meng,et al. High-Cycle Fatigue Behavior and Damage Mechanism of Multiphase Al-Si Piston Alloy at Room and Elevated Temperatures[J]. ADVANCED ENGINEERING MATERIALS,2018,20(6):9.
APA	Liu, Haiquan,Pang, Jianchao,Wang, Meng,Li, Shouxin,&Zhang, Zhefeng.(2018).High-Cycle Fatigue Behavior and Damage Mechanism of Multiphase Al-Si Piston Alloy at Room and Elevated Temperatures.ADVANCED ENGINEERING MATERIALS,20(6),9.
MLA	Liu, Haiquan,et al."High-Cycle Fatigue Behavior and Damage Mechanism of Multiphase Al-Si Piston Alloy at Room and Elevated Temperatures".ADVANCED ENGINEERING MATERIALS 20.6(2018):9.