The effect of residual stresses induced by prestraining on fatigue life of notched specimens

被引：0
|
作者：
R. Sadeler
A. Ozel
I. Kaymaz
Y. Totik
机构：
[1] Ataturk University,Department of Mechanical Engineering, Faculty of Engineering
来源：
Journal of Materials Engineering and Performance | 2005年 / 14卷
关键词：
finite-element analysis; prestraining; residual stress; rotating bending fatigue;
D O I：
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学科分类号：
摘要：
The effect of tensile prestraining-induced residual stress on the fatigue life of notched steel parts was investigated. The study was performed on AISI 4140 steel. Rotating bending fatigue tests were carried out on semicircular notched specimens with different notch radii in the as-quenched and tempered conditions. Metallography of the specimens was performed by means of light optical microscopy. The finite-element method was used to evaluate the residual stress distribution near the notch region. Fatigue tests revealed fatigue life improvement for notched specimens, which changes depending on the notch radii and applied stress. Scanning electron microscopy was used to examine the fracture surfaces of the specimens.
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页码：351 / 355
页数：4
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