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| Content Provider | Springer Nature Link |
|---|---|
| Author | Zhang, Xiancheng Xuan, Fuzhen Tu, Shantung Xu, Binshi Wu, Yixiong |
| Copyright Year | 2011 |
| Abstract | The aim of this paper was to address the rolling contact fatigue (RCF) failure mechanisms of plasmasprayed Cr3C2-NiCr coatings under different tribological conditions of contact stress. Weibull distribution plots of fatigue lives of the coated specimens at different contact stresses were obtained. The failure modes of coatings were identified on the basis of wore surface observations of the failed coatings. Results showed that the RCF failure modes can be classified into four main categories, i.e., surface abrasion, spalling, cohesive delamination, and interfacial delamination. The probabilities of the surface abrasion and spalling type failures were relatively high at low contact stress. When the coatings were subjected to abrasion and spalling type failures, the failure of the coating was depended on the microstrcture of the coating. The stress concentration near the micro-defects in the coating may be the may reason for the formation of spall. The coatings were prone to fail in delamination under higher contact stresses. However, the delamination of coating may be related to distribution of shear stress amplitude within coating. The location of maximum shear stress amplitude can be used as a key parameter to predict the initiation of subsurface cracks within coating in rolling contact. |
| Starting Page | 118 |
| Ending Page | 135 |
| Page Count | 18 |
| File Format | |
| ISSN | 20950233 |
| Journal | Frontiers of Mechanical Engineering |
| Volume Number | 6 |
| Issue Number | 1 |
| e-ISSN | 16733592 |
| Language | English |
| Publisher | SP Higher Education Press |
| Publisher Date | 2011-01-06 |
| Publisher Institution | Chinese Universities |
| Publisher Place | Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | rolling contact fatigue coating Weibull distribution failure mode mechanism Mechanical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanical Engineering |
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