表面技术2017，Vol.46Issue(12)：147-152,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.12.024
镍基718材料表面修饰类型的有限元仿真优化设计
Simulation Optimization Design of Surface Finish Types for Inconel 718 Alloy in Finite Element Method
摘要
Abstract
The work aims to further improve tribological properties and carrying capacity of micro-textured surface, and study the law of effects of different dimples combined distribution on surface properties. Finite element simulation technology and single factor design were used to analyze and compare effects of micro-textured surface textured with all hemispheric dim-ples, square dimples and triangle dimples on tribological properties of Inconel 718 alloy. Law of the effects of different mi-cro-textured surfaces on bearing capacity and friction coefficient of oil film was analyzed and obtained. The micro-textured sur-face textured with all three dimple shapes exhibited the best bearing capacity. And the micro-textured surface with hemispheric dimples and square dimples had the minimum friction coefficient. For the Inconel 718 high-temperature alloy surface textured with modified dimples, the bearing capacity of oil film can be improved significantly, which is beneficial to the formation of complete oil film. Combined distribution of different dimple shapes has great significance on tribological properties and bearing capacity of material. Moreover, the gap among friction coefficients of different micro-textured surfaces narrows as the velocity and load increase, which implies that dimple shapes and combined distribution have weaker effects on tribological properties.关键词
镍基718高温合金/表面微造型/凹坑形状/摩擦系数/油膜承载能力Key words
Inconel 718 high temperature alloy/surface micro-texture/dimple shape/friction coefficient/bearing capacity of oil film分类
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齐晓华,魏冠义,文晓娟..镍基718材料表面修饰类型的有限元仿真优化设计[J].表面技术,2017,46(12):147-152,6.基金项目
河南省科技厅科技公关项目(162102210379)Supported by Science and Technology Public Relations Project in Henan Province (162102210379) （162102210379）
