1. Beijing Advanced Innovation Center for Materials Genome Engineering, Central Iron & Steel Research Institute,Beijing 100081, China
2. Beijing Key Laboratory of Metallic Materials Characterization, The NCS Testing Technology Co, Ltd,Beijing 100081, China
3. Material Digital R&D Center, Central Iron & Steel Research Institute, Beijing 100081, China
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.