Influence of thermal loading parameters and microstructure on the formation of stratified surface layers on railway wheels

M. Freisinger, K. Pichelbauer, G. Trummer, K. Six
{"title":"Influence of thermal loading parameters and microstructure on the formation of stratified surface layers on railway wheels","authors":"M. Freisinger, K. Pichelbauer, G. Trummer, K. Six","doi":"10.1177/09544097241229121","DOIUrl":null,"url":null,"abstract":"Due to an increasing trend towards environmentally friendly public transport, rail networks face higher speeds and wheel loads affecting the material degradation of the railway components. Within this study, influencing parameters on the formation of stratified surface layers, forming on railway wheels during service due to thermal loadings in the wheel-rail contact, are studied. These layers consist of white etching layer and underlying brown etching layer and are susceptible to fatigue crack initiation. By using laser surface treatments, its formation based on two consecutive thermal loadings is systematically demonstrated on ER7 wheel steel. Further, a decrease in layer thickness with decreasing laser power, and an increase in brown etching layer thickness with increasing laser power difference is shown. Moreover, the effect of finer grain size leading to an increased layer thickness, and the influence of the chemical composition by comparing the standard ER7 wheel steel to a micro-alloyed wheel steel are demonstrated.","PeriodicalId":515695,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","volume":"139 49","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1177/09544097241229121","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Due to an increasing trend towards environmentally friendly public transport, rail networks face higher speeds and wheel loads affecting the material degradation of the railway components. Within this study, influencing parameters on the formation of stratified surface layers, forming on railway wheels during service due to thermal loadings in the wheel-rail contact, are studied. These layers consist of white etching layer and underlying brown etching layer and are susceptible to fatigue crack initiation. By using laser surface treatments, its formation based on two consecutive thermal loadings is systematically demonstrated on ER7 wheel steel. Further, a decrease in layer thickness with decreasing laser power, and an increase in brown etching layer thickness with increasing laser power difference is shown. Moreover, the effect of finer grain size leading to an increased layer thickness, and the influence of the chemical composition by comparing the standard ER7 wheel steel to a micro-alloyed wheel steel are demonstrated.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
热加载参数和微观结构对铁路车轮分层表层形成的影响
由于环保型公共交通的发展趋势日益明显,铁路网络面临着更高的速度和车轮载荷,这对铁路部件的材料降解产生了影响。本研究对铁路车轮在使用过程中由于轮轨接触热负荷而形成的分层表面层的影响参数进行了研究。这些层由白色蚀刻层和底层棕色蚀刻层组成,容易产生疲劳裂纹。通过使用激光表面处理技术,在 ER7 车轮钢上系统地展示了基于两次连续热负荷的腐蚀层形成过程。结果表明,随着激光功率的减小,层厚度减小,而随着激光功率差的增大,棕色蚀刻层厚度增大。此外,通过将标准 ER7 车轮钢与微合金车轮钢进行比较,还证明了晶粒更细导致层厚度增加的影响,以及化学成分的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Modelling tamping effectiveness for track geometry longitudinal levelling defects Carbody hunting behaviour of high speed vehicles in low effective conicity of wheel-rail contact Field investigation on the effect of the tamping machine and dynamic track stabilizer on changing the rail support modulus High–speed train crash safety assessment for Train–moose collisions An investigation into the constitutive relation of corrugated metro rail material based on nano-indentation experiment and inverse analysis
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1