Thermo-mechanical finite element modeling of shape memory materials' microindentation

10th International School-Conference on Materials for Extreme Environment: Development, Production and Application

Perlovich, Yu A.^1 ; Isaenkova, M.G.^1 ; Krymskaya, O.A.^1 ; Zhuk, D.I.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway, 31, Moscow

115409, Russia^1

关键词: Finite element modelling;    Micro indentation;    Shape-memory materials;    Spherical indenters;    Super-elastic property;    Thermal recovery;    Thermo-mechanical finite element models;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/130/1/012054/pdf
DOI  :  10.1088/1757-899X/130/1/012054

来源: IOP

【 摘 要 】

Indentation of shape memory materials and later heating with recovery of indent is studied in this work using finite element modelling. Results of simulations of two types of shape memory materials, with one-way shape memory effect and with superelastic properties compared to experimental indentation with 200μm spherical indenter. Based on results of finite element modeling, several useful quantities plotted for loading, unloading and thermal recovery for various materials with shape memory effect. Recovery of imprint made with Berkovich (three-sided pyramid) compared to recovery of imprint made with spherical indenter.