Modelling rail steel microstructure and its effect on crack initiation

被引：41

作者：

Franklin, F. J. ^{[1
]}

Garnham, J. E. ^{[2
]}

Fletcher, D. I. ^{[1
]}

Davis, C. L. ^{[2
]}

Kapoor, A. ^{[1
]}

机构：

[1] Univ Newcastle, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

WEAR | 2008年 / 265卷 / 9-10期

基金：

英国工程与自然科学研究理事会;

关键词：

rolling contact fatigue; crack initiation; ratcheting failure; computer simulation; pearlitic rail steel;

D O I：

10.1016/j.wear.2008.03.027

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The quality of rail steel has improved greatly in recent years and the material is more resistant to wear, plastic deformation and crack initiation: but track forces have also increased,and cracking of rails is a major concern. Different steel microstructures have different wear and rolling contact fatigue (RCF) behaviours when subject to cyclic, rolling-sliding, compressive contact. In order to capture the differences, it is necessary to model these at a microstructural level. This paper describes the development of microstructural models for incorporation into a wear and crack initiation model. A new mechanism is introduced which distinguishes RCF lives of pearlitic microstructures with different percentage volumes of pio-eutectoid ferrite. (C) 2008 F.J. Franklin. Published by Elsevier B.V. All rights reserved.

引用

页码：1332 / 1341

页数：10

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