低冲蚀角下40Cr冲蚀与空蚀耦合磨损特性研究

庞佑霞; 李彬; 刘厚才

doi:10.13433/j.cnki.1003-8728.2016.0315

低冲蚀角下40Cr冲蚀与空蚀耦合磨损特性研究

doi: 10.13433/j.cnki.1003-8728.2016.0315

1.
长沙学院先进设计与制造技术研究所, 长沙 410003;
2.
湖南科技大学机电工程学院, 湘潭 411201

基金项目:

国家自然科学基金项目(51475049)与湖南省"十二五"重点建设学科项目资助

详细信息

作者简介:
庞佑霞(1959-),教授,研究方向为流体机械摩擦磨损,流体动力学,pyoux2002@126.com

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- 被引次数: 0
出版历程
- 收稿日期: 2014-04-22
- 刊出日期: 2016-03-05

Exploring Characteristics of Coupled Erosion and Cavitation Wear of 40Cr in Low Impact Angle

1.
Advanced Design and Manufacturing Technology Research Institute, Changsha University, Changsha 410003, China;
2.
College of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

摘要

摘要: 基于CFD理论,数值模拟了低冲角下(冲蚀角α7Pa,在这种高强度冲击的反复作用下,材料更容易发生疲劳失效;2)当α30°时,材料表面的磨痕主要为瞬时高温氧化和疲劳剥落引起的夹杂着白色氧化铁颗粒的蚀坑。40Cr试件失重量随冲蚀角变化趋势与三次样条曲线吻合得很好。
- 冲蚀角 /
- 40Cr /
- 冲蚀和空蚀 /
- 耦合磨损
Abstract: Based on the CFD theory, the flow field characteristics of coupled erosion and cavitation wear were numerically simulated in different impact angles (α7 Pa when the impact angle is about 30°, the materials are more prone to fatigue failure in this kind of repeated impact; 2) the failure of 40Cr is mainly micro-cutting furrows and some pinhole-like pits when the impact angle αα>30°. The trend between the weight loss of 40Cr specimen and its impact angle coincides with the cubic spline very well.
- 40Cr /
- coupled wear /
- erosion and cavitation /
- impact angle

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参考文献(15)

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