期刊
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
卷 44, 期 3, 页码 788-804出版社
WILEY
DOI: 10.1111/ffe.13394
关键词
case hardening; materials testing; multiaxial fatigue; subsurface crack initiation; very high‐ cycle fatigue
资金
- Norges Forskningsrad [270828]
- German Research Foundation (DFG) [169148856]
- Europe Technologies
This study presents a testing and modelling concept aimed at estimating the local fatigue properties of carburised CrNiMo steel, with all specimens ultrasonic shot-peened prior to testing. Fractographic analyses were conducted on all specimens to define crack initiation-related discontinuities, and an iteration of the FKM guideline was presented to explain the effect of large internal notches on mean stress sensitivity.
In this study, a testing and modelling concept is presented, aimed at estimating the local fatigue properties of carburised CrNiMo steel, covering the fatigue limit under axial and torsional loading at various mean stresses. Aimed at predicting the bulk material properties, all specimens were ultrasonic shot-peened prior to testing. Fractographic analyses were conducted on all specimens using scanning electron microscopy to define the type, size and chemical composition of crack initiation-related discontinuities. An iteration of the FKM guideline is presented, relying on the external notch concept to explain the effect of large internal notches on the mean stress sensitivity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据