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有限元模拟TiN膜/碳钢基材体系的摩擦磨损试验
Finite Element Simulation of Friction and Wear Experiment on TiN Film/Carbon Steel Substrate System

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杨洪刚   李曙 *   刘阳   王鹏  
文摘 对TiN膜/碳钢基材体系摩擦磨损过程的有限元模拟表明:磨痕边缘的多种应力集中、磨痕内外的张应力、膜/基界面切应力,都将影响体系的摩擦学行为.用销/盘试验验证了有限元模拟结果,根据对膜层中裂纹的萌生、扩展和体系的损伤、破坏情况分析,摩擦磨损过程分为磨合、稳定磨损、膜层失稳、体系失效阶段.提出了小载荷摩擦磨损下过软基材的膜/基体系失效机制,即膜层在集中应力和张应力作用下发生裂纹萌生和扩展的脆性破坏,其中,由于体系变形引起的磨痕边缘应力集中对膜层早期损伤进而导致体系磨损失效具有最重要作用.
其他语种文摘 The finite element simulation of friction and wear experiment on TiN film/carbon steel substrate system shows that several stress concentrations at edge of grinding-trace,tensile stress inside and outside grinding-trace,shear stress at film/substrate interface all affect tribological behavior of the system.The results calculated by FEM have been confirmed by pin/disc test.According to the analysis of crack initiation and propagation in film as well as damage and breakage of system,the process of friction and wear can be divided into several stages,such as wear-in,steady wear,film unsteady wear,and system failure.The failure mechanism of hard film/soft substrate system in friction and wear experiment under small loading has been suggested.The stress concentrations and tensile stress have important function on crack initiation and propagation,which can cause the brittle breakage in film.The stress concentrations at edge of grinding-trace due to deformation play most important role on early damage which results in wear failure of film/substrate system.
来源 摩擦学学报 ,2009,29(4):293-298 【核心库】
关键词 膜/基体系 ; 摩擦磨损 ; 有限元模拟 ; 应力集中
地址

中国科学院金属研究所, 辽宁, 沈阳, 110016

语种 中文
文献类型 研究性论文
ISSN 1004-0595
学科 机械、仪表工业
基金 国家自然科学基金
文献收藏号 CSCD:3669723

参考文献 共 13 共1页

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