On Crack Initiation and Early Growth of Very-High-Cycle Fatigue for High Strength Steels

IMECH-IR > 非线性力学国家重点实验室

	On Crack Initiation and Early Growth of Very-High-Cycle Fatigue for High Strength Steels
	Hong YS(洪友士); Zhao AG(赵爱国); Sun CQ(孙成奇)
会议录名称	Fatigue and Corrosion Damage in Metallic Materials: Fundamentals, Modeling and Prevention
	2012-03
会议名称	TMS 141st Annual Meeting & Exhibition
会议日期	2012-3
会议地点	Orlando, USA
摘要	In the regime of Very-High-Cycle Fatigue (VHCF) for high strength steels, crack initiation and early growth dominate the fatigue life. The process of crack initiation and early growth of high strength steels at VHCF regime almost originates from the interior of the material with fish-eye embracing FGA or ODA. In this paper, fatigue tests on two high strength steels, i.e. a high carbon chromium steel and a medium carbon chromium steel, were performed with rotating bending and ultrasonic fatigue testing machines. The results show the dimensions of FGA and fish-eye as a function of inclusion size and reveal the correlation of the dimensions for FGA and fish-eye with fatigue failure cycles. The results also show the values of stress intensity factor ranges for FGA and fish-eye keep constant with fatigue failure cycles, which was used to estimate the fatigue life of high cycle and VHCF for high strength steels.
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/311007/52733
专题	非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Hong YS,Zhao AG,Sun CQ. On Crack Initiation and Early Growth of Very-High-Cycle Fatigue for High Strength Steels[C]Fatigue and Corrosion Damage in Metallic Materials: Fundamentals, Modeling and Prevention,2012.