Estimation of residual stress and its effects on the mechanical properties of detonation gun sprayed WC-Co coatings
文献类型：期刊论文
| 作者 | T. G. Wang ; S. S. Zhao ; W. G. Hua ; J. B. Li ; J. Gong ; C. Sun |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2010 |
| 卷号 | 527期号:3页码:454-461 |
| 关键词 | Residual stress (ti D-Gun spraying al)n films WC-Co coating Peening stress Mechanical property particle-velocity elastic-modulus microstructure temperature deposition thickness titania solids metals |
| ISSN号 | 0921-5093 |
| 中文摘要 | It is essential to analyze the residual stresses of thick coatings since they seriously affect coatings' performance during their service. It is also important to understand the mechanisms by which the stresses arise, to predict and control the stresses for improving coating properties. Because the Stoney formula is commonly used to relate stress to curvature for thin coatings, a new calculation formula was developed to estimate the residual stresses of thick coatings that represent a comprehensive stress state of the coated specimen. Based on the deduced formula and accurate curvature measurements, the residual stresses of detonation gun (D-Gun) sprayed WC-Co coatings with different thickness were obtained. With increasing the coating thickness, the residual stress changed gradually from the tensile nature to a compressive nature. Meanwhile, the coating was in an approximately stress-free state at the thickness of around 365 mu m. The analysis results emphasized the significance of peening stress in controlling the final stress state of the coated specimen, due to the high spraying velocity and kinetic energy during the D-Gun spraying process. Finally, the effects of residual stress on the mechanical properties of the coating were understood, namely, the compressive stress could significantly improve the coating properties, whereas the tensile stress impaired the coating properties. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31516]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | T. G. Wang,S. S. Zhao,W. G. Hua,et al. Estimation of residual stress and its effects on the mechanical properties of detonation gun sprayed WC-Co coatings[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(3):454-461. |
| APA | T. G. Wang,S. S. Zhao,W. G. Hua,J. B. Li,J. Gong,&C. Sun.(2010).Estimation of residual stress and its effects on the mechanical properties of detonation gun sprayed WC-Co coatings.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(3),454-461. |
| MLA | T. G. Wang,et al."Estimation of residual stress and its effects on the mechanical properties of detonation gun sprayed WC-Co coatings".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.3(2010):454-461. |
入库方式： OAI收割
来源：金属研究所
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