Thermo-mechanical fatigue behavior and life prediction of the Al-Si piston alloy

CORC > 金属研究所 > 中国科学院金属研究所

	Thermo-mechanical fatigue behavior and life prediction of the Al-Si piston alloy
	Wang, M; Pang, JC; Zhang, MX; Liu, HQ; Li, SX; Zhang, ZF; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2018-02-07
卷号	715 页码:62-72
关键词	Low-cycle Fatigue Damage Mechanisms Aluminum-alloy Elevated-temperature Strain-rate Loadings Components Property Creep Cu
ISSN号	0921-5093
英文摘要	The thermo-mechanical fatigue (TMF) behaviors and corresponding damage mechanisms of Al-Si piston alloy were investigated in the temperature ranges of 120-350 degrees C and 120-425 degrees C in this study. For TMF cyclic stress response behavior, the rapid cyclic softening occurs in the initial stage and then the cyclic stress maintains stable at lower strain amplitudes; but the cyclic stress displays gradual decrease up to the final failure at higher strain amplitudes. For TMF damage behavior, the cracks mainly initiate from the broken primary silicon in the temperature of 120-350 degrees C range, and commonly nucleate from the boundary between primary Si and matrix in the temperature of 120-425 degrees C range. For both cases, creep may have obvious influence and result in the formation of many micro-voids, but the oxidation may only have a little effect. A new energy-based model for low-cycle fatigue (LCF) and TMF life prediction was proposed based on the hysteresis energy with strain rate modification, considering both fatigue and creep damages. The predicted results agree well with the experimental ones for the Al-Si piston alloy.; The thermo-mechanical fatigue (TMF) behaviors and corresponding damage mechanisms of Al-Si piston alloy were investigated in the temperature ranges of 120-350 degrees C and 120-425 degrees C in this study. For TMF cyclic stress response behavior, the rapid cyclic softening occurs in the initial stage and then the cyclic stress maintains stable at lower strain amplitudes; but the cyclic stress displays gradual decrease up to the final failure at higher strain amplitudes. For TMF damage behavior, the cracks mainly initiate from the broken primary silicon in the temperature of 120-350 degrees C range, and commonly nucleate from the boundary between primary Si and matrix in the temperature of 120-425 degrees C range. For both cases, creep may have obvious influence and result in the formation of many micro-voids, but the oxidation may only have a little effect. A new energy-based model for low-cycle fatigue (LCF) and TMF life prediction was proposed based on the hysteresis energy with strain rate modification, considering both fatigue and creep damages. The predicted results agree well with the experimental ones for the Al-Si piston alloy.
学科主题	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	National Natural Science Foundation of China (NSFC) [51331007]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79514]
专题	金属研究所_中国科学院金属研究所
通讯作者	Pang, JC; Zhang, ZF (reprint author), 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	Wang, M,Pang, JC,Zhang, MX,et al. Thermo-mechanical fatigue behavior and life prediction of the Al-Si piston alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,715:62-72.
APA	Wang, M.,Pang, JC.,Zhang, MX.,Liu, HQ.,Li, SX.,...&Zhang, ZF .(2018).Thermo-mechanical fatigue behavior and life prediction of the Al-Si piston alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,715,62-72.
MLA	Wang, M,et al."Thermo-mechanical fatigue behavior and life prediction of the Al-Si piston alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 715(2018):62-72.