Multiscale characterization of head check initiation on rails under rolling contact fatigue: Mechanical and microstructure analysis
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- 作者：Dylewski Benoî ; t ; benoit.dylewski@utc.fr" class="auth_mail" title="E-mail the corresponding author ; Bouvier Salima ; Risbet Marion
- 关键词：Rail ; Rolling contact fatigue ; Head check ; Microstructure ; Hardness
- 刊名：Wear
- 出版年：2016
- 出版时间：15 November 2016
- 年：2016
- 卷：366-367
- 期：Complete
- 页码：383-391
- 全文大小：6955 K
文摘
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Field investigations on microstructure evolution with early tonnage accumulation.
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Pearlite deformation and crack initiation are studied with MEB and EBSD analyses.
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Progressive plastic deformation of the rail surface towards the gauge corner.
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Strong evolution of the decarburized layer, soft PE ferrite severely shear strained.
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Cracks initiation mostly along the shear strained proeutectoïd ferrite.