Influence of microstructure on the thermo-mechanical fatigue behavior and life of vermicular graphite cast irons

doi:10.1016/j.msea.2019.138617

IMR OpenIR

	Influence of microstructure on the thermo-mechanical fatigue behavior and life of vermicular graphite cast irons
	Zhang, M. X.; Pang, J. C.; Qiu, Y.; Li, S. X.; Wang, M.; Zhang, Z. F.
	2020-01-13
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷号	771
摘要	Cylinder head is subjected to the combination changes of temperature and mechanical loads in service. In such harsh condition, thermo-mechanical fatigue (TMF) failure is a main problem. In this study, two kinds of vermicular graphite cast irons were selected to reveal the TMF properties and life prediction. Vermicular graphite casts with different microstructures have different ferrite cluster morphologies, which result in different fracture mechanisms. The hysteresis loops of both materials display obvious asymmetry. Hysteresis energy and mechanical strain amplitude were selected as damage parameters to determine the fatigue life. It Is found that the TMF performance of vermicular graphite cast iron with higher pearlite content is better; meanwhile, the life of TMF at different constraint ratios was also studied. Hysteretic energy related to constrain ratio is in a parabolic form, and the life of TMP decreases with the absolute value of constraint ratio increasing. Finally, the quantitative relationship between constraint ratio and TMF life was also discussed.
DOI	10.1016/j.msea.2019.138617
WOS记录号	WOS:000503324700069
引用统计	被引频次：24[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/321006/155724
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Zhang, M. X.,Pang, J. C.,Qiu, Y.,et al. Influence of microstructure on the thermo-mechanical fatigue behavior and life of vermicular graphite cast irons[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,771.
APA	Zhang, M. X.,Pang, J. C.,Qiu, Y.,Li, S. X.,Wang, M.,&Zhang, Z. F..(2020).Influence of microstructure on the thermo-mechanical fatigue behavior and life of vermicular graphite cast irons.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,771.
MLA	Zhang, M. X.,et al."Influence of microstructure on the thermo-mechanical fatigue behavior and life of vermicular graphite cast irons".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 771(2020).