A two-parameter model for fatigue strength estimation of high-strength steels in very-high-cycle-fatigue regime

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	A two-parameter model for fatigue strength estimation of high-strength steels in very-high-cycle-fatigue regime
	Sun CQ(孙成奇); Hong YS(洪友士)
会议录名称	Fatigue in Materials: Microstructure-Driven Modeling and In-Situ Fatigue Characterization
	2013-03
会议名称	TMS 142nd Annual Meeting & Exhibition
会议日期	2013-3
会议地点	San Antonio, USA
摘要	A model containing two microscopic parameters, i.e. inclusion size and fine granular area size (FGA) is proposed for the estimation of fatigue strength or S-N curve of high-strength steels with fish-eye failure mode for very-high-cycle-fatigue (VHCF). The estimation results indicate that the effect of inclusion size on fatigue strength is related to the relative size of inclusion to FGA. Based on the model simulation and experimental data, the paper shows that the stress intensity factor range at the front of FGA is a constant which corresponds to the threshold value of crack propagation. The results also indicate that the FGA size can be obtained in terms of stress intensity factor range at the front of FGA and the stress amplitude for high-strength steels with fish-eye failure mode in VHCF regime.
课题组名称	LNM金属材料微结构与力学性能
URL	查看原文
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/52729
专题	非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Sun CQ,Hong YS. A two-parameter model for fatigue strength estimation of high-strength steels in very-high-cycle-fatigue regime[C]Fatigue in Materials: Microstructure-Driven Modeling and In-Situ Fatigue Characterization,2013.