Experimental Investigation on Fatigue Crack Propagation in Surface-Hardened Layer of High-Speed Train Axles

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Experimental Investigation on Fatigue Crack Propagation in Surface-Hardened Layer of High-Speed Train Axles

This study examines fatigue crack growth behavior in induction-hardened S38C axle steel with a gradient microstructure. High-frequency three-point bending fatigue tests were conducted to evaluate crack growth rates (d<i>a</i>/d<i>N</i>) across three depth-defined regions: a h...

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Bibliographic Details
Main Authors:	Chun Gao, Zhengwei Yu, Yuanyuan Zhang, Tao Fan, Bo Zhang, Huajian Song, Hang Su
Format:	Article
Language:	English
Published:	MDPI AG 2025-07-01
Series:	Crystals
Subjects:	fatigue crack propagation three-point bending crack measurement fractography high-speed train axle surface hardening
Online Access:	https://www.mdpi.com/2073-4352/15/7/638
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