Effect of Microstructural Banding on the Fatigue Behavior of Induction-Hardened 4140 Steel

被引：0
|
作者：
M. L. Hayne
P. I. Anderson
K. O. Findley
C. J. Van Tyne
机构：
[1] Colorado School of Mines,Department of Metallurgical and Materials Engineering
[2] The Timken Company,undefined
来源：
Metallurgical and Materials Transactions A | 2013年 / 44卷
关键词：
Fatigue; Fatigue Life; Fatigue Crack Growth; Duplex Stainless Steel; Crack Nucleation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The fatigue behavior of induction-hardened calcium-treated 4140 steel with three different case depths was evaluated using rotating bending fatigue tests. The as-received microstructure of the steel was banded and the orientation of microstructural banding with respect to the fatigue specimen was varied. Due to the inclusion shape control resulting from the calcium additions, inclusions in the steel were not elongated in the direction of the banding. It was found that microstructure banding does not have a significant influence on the fatigue properties of the steel tested. Furthermore, the fatigue limit increase with case depth is primarily related to the bending stress near the location of crack nucleation.
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页码：3428 / 3433
页数：5
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