Thermomechanical Fatigue Behavior of the Ferritic Stainless Steel

Keum Oh Lee; Seong Gu Hong; Samson YoonSoon Bok Lee

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Thermomechanical Fatigue Behavior of the Ferritic Stainless Steel

机译：Thermomechanical Fatigue Behavior of the Ferritic Stainless Steel

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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℃. 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.

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来源
《Key engineering materials》 |2005年第2期|1146-1151|共6页
作者
Keum Oh Lee; Seong Gu Hong; Samson YoonSoon Bok Lee;
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作者单位

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea;

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原文格式 PDF
正文语种英语
中图分类工程基础科学;
关键词
thermomechanical fatigue; low-cycle fatigue; tomkins model; effective stress;

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Thermomechanical Fatigue Behavior of the Ferritic Stainless Steel

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