Tensile pre-strain effects on torsional fatigue properties of medium carbon steels

被引：2
|
作者：
Zhou, CL [1 ]
Nishida, S
Hattori, N
Sun, WX
机构：
[1] Saga Univ, Grad Sch Sci & Engn, Dept Mech Engn, Saga 840, Japan
[2] Saga Univ, Fac Sci & Engn, Dept Engn Mech, Saga 840, Japan
来源：
ADVANCES IN FRACTURE AND STRENGTH, PTS 1- 4 | 2005年 / 297-300卷
关键词：
tensile; pre-strain; torsional fatigue; medium carbon steel; crack initiation and propagation; non-propagating crack;
D O I：
10.4028/www.scientific.net/KEM.297-300.1126
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This study was focused on the effects of pre-strain on the torsional fatigue properties of three kinds of medium carbon steels, including the fatigue strength, surface hardness, microstructure, and the crack initiation and propagation behaviors. The effect of pre-strain on the non-propagating cracks was also discussed. The main results obtained in this test are as follows: 1) the fatigue limits increase with the increasing of tensile pre-strain ratio for all kinds of the test materials; 2) under certain stress amplitude, with the increasing of tensile pre-strain ratio, the fatigue crack initiates a little earlier and propagates faster; 3) the length of non-propagating crack decreases with the increasing of tensile pre-strain ratio.
引用
收藏
页码：1126 / 1132
页数：7
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