基于反演分析法探究残余压应力对叠层涂层拉伸性能的影响  

Exploring the impact of residual compressive stress on tensile properties of multilayer coatings based on inverse analysis method

作　　者：陈金湖 贾云飞 马天宇 张勇 张钰 杨俊 CHEN Jinhu;JIA Yunfei;MA Tianyu;ZHANG Yong;ZHANG Yu;YANG Jun(School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]华东理工大学机械与动力工程学院,上海200237 [2]东北大学材料科学与工程学院,沈阳110819

出　　处：《机械强度》2025年第4期79-86,共8页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(52222505,52321002);上海市自然科学基金项目(23ZR1415500)。

摘　　要：涂层广泛应用于各类重要零部件表面以提升其使用寿命,研究涂层的力学性能是评价该项技术优劣程度的一个关键因素。采用真空离子镀膜技术在铝基复合材料表面制备TiAlN/Ti和TiN/Ti叠层涂层,并通过扫描电镜(Scanning Electron Microscopy,SEM)、X射线衍射仪(X-Ray Diffraction,XRD)和纳米压痕测试仪对涂层的微观结构、物相组成和力学性能进行表征和分析。基于量纲分析理论推导出材料力学性能参数与纳米压痕加/卸载参量之间的量纲一函数关系,结合有限元模拟的方法,确定其具体表达式。通过建立叠层涂层的纳米压痕仿真模型,分析了残余压应力对叠层涂层拉伸性能的影响。结果表明,残余压应力可以提高叠层涂层的屈服强度。其中,TiN/Ti叠层涂层的残余压应力为-564 MPa,提高了31.25%的屈服强度;TiAlN/Ti叠层涂层的残余压应力为-871 MPa,提高了50%的屈服强度。此方法为定量分析涂层力学性能的影响因素提供了重要的理论和试验基础。Coatings have extensively been used to the surfaces of critical components to enhance their service life,and the research on mechanical properties of coatings is essential for advancing this technology.TiAlN/Ti and TiN/Ti multilayer coatings were prepared on aluminum matrix composite surfaces by using the vacuum ion beam sputtering technique.The microstructure,phase composition,and mechanical properties of the coatings were characterized and analyzed using scanning electron microscopy(SEM),X-ray diffraction(XRD),and nanoindentor.The dimensionless function correlation between mechanical properties of material with multilayer coatings and the loading/unloading parameters of nanoindentation was derived based on dimension analysis theory,and its explicit expression was determined in conjunction with the finite element simulation method.By establishing a nanoindentation simulation model for the multilayer coating,the impact of residual compressive stress on the tensile properties of the multilayer coating was analyzed.The results indicate that residual compressive stress can enhance the yield strength of the multilayer coatings.The residual compressive stress of TiN/Ti multilayer coating is-564 MPa,increasing the yield strength by 31.25%.Similarly,the residual compressive stress of TiAlN/Ti multilayer coating is-871 MPa,resulting in a 50% increase in yield strength.An important theoretical and test basis is proposed for quantitative analysis of the factors influencing the mechanical properties of coatings.

关 键 词：纳米压痕 叠层涂层 残余压应力 有限元 反演分析 

分 类 号：TG174.444[金属学及工艺—金属表面处理] V261.933[金属学及工艺—金属学]