期刊
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
卷 108, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrmhm.2022.105957
关键词
Hardness; Temperature; Indentation size effect; Theoretical models
资金
- National Natural Science Foundation of China [11972100, 11602044, 11727802]
- Natural Science Foundation Project of CQ CSTC [cstc2021jcyj-msxmX0418]
- Program for Creative Research Groups in University of Chongqing [CXQT19031]
- Chongqing University of Science and Technology Graduate Science and Technology Innovation Program [YKJCX2020221]
This study introduces the indentation size effect into a novel temperature-dependent hardness model using the energy method. The model accurately predicts the hardness of ceramic and metallic materials, and investigates the effects of indentation depth and Young's modulus on hardness and their evolution with temperature.
Indentation size effect has been found in the micro-nano hardness tests of both ceramic materials and metallic materials, even at high temperature. However, there are few temperature-dependent hardness theoretical models that can quantitatively characterize the indentation size effect of materials. This work introduces the indentation size effect into a novel temperature-dependent hardness model of materials by using energy method. The model takes into account the Young's modulus, indentation depth, melting point, and constant pressure heat capacity of materials without any fitting parameters. Further, for solving the problem of the difficulty to obtain the heat capacity of some materials, a simpler temperature-dependent model that just includes the Young's modulus, indentation depth and melting point is proposed. The remarkably excellent agreements between predicted and measured data of both ceramic materials and metallic materials verify the currency of the models. In addition, the effects of indentation depth and Young's modulus on the hardness of materials and their evolution with temperature are studied.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据