Nanoindentation study of layers after chemical _heat treatment of 27MnCrV4 steel

10th International Symposium Machine and Industrial Design in Mechanical Engineering

工业技术;机械制造

Barényi, I.^1 ; Majerík, J.^1 ; Eckert, M.^1

Alexander Dubcek University of Trencin, Faculty of Special Technology, Pri Parku 19, Trenín

911 06, Slovakia^1

关键词: Chemical heat treatment;    Hardness and elastic modulus;    Indentation test;    Local mechanical properties;    Micro-structural;    Nano-indentation hardness;    Nanoindentation testing;    Thin surface layer;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/393/1/012106/pdf
DOI  :  10.1088/1757-899X/393/1/012106

学科分类：工业工程学

来源: IOP

【 摘 要 】

Nanoindentation testing is a method that consists essentially of touching the material of interest whose local mechanical properties as are hardness and elastic modulus are unknown. Nanoindentation testing is simply an indentation test in which the length scale of the penetration is measured in nanometres (10-9 m) rather than microns (10-6 m) or millimetres (10-3 m), the latter being common in conventional hardness tests. Both load and depth of penetration are recorded at each load increment (ultimately providing a measure of modulus and hardness as a function of depth beneath the surface). The method is most suitable for evaluating of mechanical properties of thin surface layer or particular microstructural constituents and phases. In this sense, there were evaluated nanoindentation hardness and Young modulus of some structural constituent on saturated layer after nitriding of the 27MnCrV4 cast high strength steel during the realized experiments.