THE INFLUENCE OF PRESTRAIN AND AGING ON NEAR-THRESHOLD FATIGUE-CRACK PROPAGATION IN AS-ROLLED AND HEAT-TREATED DUAL-PHASE STEELS

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	THE INFLUENCE OF PRESTRAIN AND AGING ON NEAR-THRESHOLD FATIGUE-CRACK PROPAGATION IN AS-ROLLED AND HEAT-TREATED DUAL-PHASE STEELS
	Y. S. Zheng ; Z. G. Wang ; S. H. Ai
刊名	Steel Research
	1991
卷号	62 期号:5 页码:223-227
关键词	growth strength
ISSN号	0177-4832
中文摘要	The influence of prestrain and ageing on near-threshold fatigue-crack propagation (FCP) in as-rolled and heat-treated dualphase steels (DPS) was investigated over a wide range of 10(-10) to 10(-7) mm/cycle in laboratory air under a load ratio of R = 0. It was found that the fatigue-crack propagation threshold value increases with increasing grain size and decreasing yield stress, and that a combination of 10% prestraining with 175-degrees-C/30 min ageing showed almost no effect on the threshold level of as-rolled dual-phase steel, but decreased that of heat-treated dual-phase steels more than 37%. This different behaviour was suggested to result from the remarkable differences in grain size and volume fraction of martensite (Vm) in these two kinds of dual-phase steels. An estimation of the plastic zone size of fatigue-crack tip supported this suggestion.
原文出处	://WOS:A1991FN71300005
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/39528]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. S. Zheng,Z. G. Wang,S. H. Ai. THE INFLUENCE OF PRESTRAIN AND AGING ON NEAR-THRESHOLD FATIGUE-CRACK PROPAGATION IN AS-ROLLED AND HEAT-TREATED DUAL-PHASE STEELS[J]. Steel Research,1991,62(5):223-227.
APA	Y. S. Zheng,Z. G. Wang,&S. H. Ai.(1991).THE INFLUENCE OF PRESTRAIN AND AGING ON NEAR-THRESHOLD FATIGUE-CRACK PROPAGATION IN AS-ROLLED AND HEAT-TREATED DUAL-PHASE STEELS.Steel Research,62(5),223-227.
MLA	Y. S. Zheng,et al."THE INFLUENCE OF PRESTRAIN AND AGING ON NEAR-THRESHOLD FATIGUE-CRACK PROPAGATION IN AS-ROLLED AND HEAT-TREATED DUAL-PHASE STEELS".Steel Research 62.5(1991):223-227.