Topology optimization of AISI 4140 steel with surface texture filled by multi-solid lubricants for enhancing tribological properties

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外文摘要：Wind power gears will be excessively worn due to lubrication failure during operation.Herein,the tribological properties of rubbing pairs are improved by filling solid lubricants into surface texture.In texture design,three types of topological textures(Circle(C),Hexagon(H),and Circle/Hexagon(CH))were obtained by cell topology optimization,and then three cases with 20%,30%,and 40%density were designed for each texture.Next,SnAgCu and TiC were deposited in texture of AISI 4140 steel(AS)to obtain 9 kinds of self-lubricating surfaces.Among them,AS with 30%CH density(AS-CH30)exhibits excellent mechanical and tribological properties.Compared with AS-C and AS-H,the maximum equivalent stress of AS-CH was decreased by 10.86%and 5.37%,respectively.Friction coefficient and wear rate of AS-CH30 were 79.68%and 78%lower than those of AS.The excellent tribological performances of AS-CH30 can be attributed to the synergistic effect of topological surface and solid lubricants.Topological surface can not only reduce fluctuation of equivalent stress,but also promote the stored lubricants to be easily transferred at the contact interface to form a 200 nm lubricating film containing solid lubricants(mainly),oxides and wear debris.

外文关键词：

topological texturenano-TiCself-lubricatingsolid lubrication

作者：

Qipeng HUANG、Chaohua WU、Xiaoliang SHI、Kaipeng ZHANG

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作者单位：

School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China

School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China

基金：

National Natural Science Foundation of ChinaProject for Science and Technology Plan of Henan ProvinceProject for Science and Technology Plan of Henan Province

项目编号：

52375201242102221026242102220054

出版年：

2024

DOI：

10.1007/s40544-024-0863-x

摩擦(英文)

CSTPCDEI

ISSN：2223-7690

年,卷(期)：2024.12(9)