流体微探力学性能高通量表征方法  

High Throughput Characterization of Fluid-Micro-Test Mechanical Property

作　　者：赵雷[1] 刘佳[1] 任群 杨丽 王辉 沈学静 贾云海 王海舟[1,2] ZHAO Lei;LIU Jia;REN Qun;YANG Li;WANG Hui;SHEN Xuejing;JIA Yunhai;WANG Haizhou(Beijing Advanced Innovation Center for Materials Genome Engineering,Central Iron&Steel Research Institute,Beijing 100081,China;Beijing Key Laboratory of Metallic Materials Characterization,The NCS Testing Technology Co.,Ltd.,Beijing 100081,China;Material Digital R&D Center,Central Iron&Steel Research Institute,Beijing 100081,China)

机构地区：[1]钢铁研究总院北京材料基因工程高精尖创新中心,北京100081 [2]钢研纳克检测技术股份有限公司金属材料表征北京市重点实验室,北京100081 [3]中国钢研科技集团数字化研发中心,北京100081

出　　处：《中国材料进展》2023年第5期406-414,共9页Materials China

基　　金：广东省重点领域研发计划项目(2019B010941001)。

摘　　要：介绍一种流体微探力学性能(硬度)高通量表征方法。由于不同材料特征组织结构的差异,当具有相同压力的水流体作用在不同材料的平整表面上时(类似于采用比纳米压痕更小的压头加载于材料表面),每种材料所产生的微形变也有所差异,采用高精度表面形貌轮廓仪测量整个材料表面的形变量及分布,基于拉依达准则对形变量数据进行统计,解析材料的表面微形变量与硬度性能的相关性。实验采用有限元方法模拟了具有不同硬度的两相组织在等压水流体中的变形行为,并选取桥梁钢、高碳铬轴承钢、铸态镍基高温合金、镍基单晶高温合金和锻态镍基高温合金共5种具有不同特征组织和硬度的金属材料验证,结果表明,5种材料的表面形变量与显微硬度值的线性相关系数达到0.9948,该表征方法分辨率可以达到纳米级,可视为硬度性能的无损检测方法。In this paper,a new high throughput characterization of fluid-micro-test mechanical property is studied.The flat surfaces of different materials will deform slightly when loaded with the same pressure fluid,like using a smaller indenter than nanoindentation to load on the material surface.The entire micro deformation of the material surface is measured exactly by a 3D surface profiler,then the deformation values can be analyzed with Pauta criterion.Finally,the correlation between surface micro deformation and microhardness of different materials can be established.Finite element analysis(ABAQUS)is used to simulate the deformation behavior of two phases with different hardness under isostatic pressing.Five kinds of metal materials with different hardness and microstructures,including bridge steel,high carbon chromium bearing steel,as cast nickel base superalloy,nickel base single crystal superalloy and forged nickel base superalloy,are tested through a cold isostatic pressing.The relationships mathematical model of surface micro deformation and microhardness of 5 samples is established,and the correlation coefficient is 0.9948.The resolution of this method can reach the nanometer level,which can be regarded as a non-destructive testing method of hardness.

关 键 词：金属材料 流体微探 冷等静压 表面形变 微观硬度 

分 类 号：TG115.51[金属学及工艺—物理冶金]