Thermomechanical fatigue behavior of the ferritic stainless steel

被引：5
|
作者：
Lee, KO
Hong, SG
Yoon, S
Lee, SB
机构：
[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, Taejon, South Korea
[2] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA
来源：
ADVANCES IN FRACTURE AND STRENGTH, PTS 1- 4 | 2005年 / 297-300卷
关键词：
thermomechanical fatigue; low-cycle fatigue; Tomkins model; effective stress;
D O I：
10.4028/www.scientific.net/KEM.297-300.1146
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：
A thermomechanical fatigue (TMF) life prediction model for ferritic stainless steel, used in exhaust manifold of automobile, was developed based on Tomkins' two-dimensional crack propagation model. Low-cycle fatigue (LCF) and TMF tests were carried out in a wide temperature range from 200 to 650 degrees C. New concept of plastic strain range on TMF was proposed. Effective stress concept was introduced to get a reasonable stress range in TMF hysteresis loop. The proposed model predicted TMF life within 2X scatter band. The experimental results reveal that TMF life is about 10% of isothermal fatigue life.
引用
收藏
页码：1146 / 1151
页数：6
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