On the determination of representative stress-strain relation of metallic materials using instrumented indentation

作者：Fu, Kunkun^*; Chang, Li; Zheng, Bailin; Tang, Youhong; Wang, Hongjian

来源：Materials and Design, 2015, 65: 989-994.

DOI：10.1016/j.matdes.2014.10.018

• THIN-FILMS
• MECHANICAL-PROPERTIES
• ELASTIC-MODULUS
• NANOINDENTATION
• HARDNESS
• TENSILE
• SILICON
• BEHAVIOR
• DEFINITION
• STRENGTH

In this study, attempts have been made to estimate the representative stress-strain relation of metallic materials from indentation tests using an iterative method. Finite element analysis was performed to validate the method. The results showed that representative stress-strain relations of metallic materials using the present method were in a good agreement with those from tensile tests. Further, this method was extended to predict representative stress-strain relation of ultra-thin molybdenum films with a thickness of 485 nm using nanoindentation. Yielding strength and strain hardening exponent of the films were therefore obtained, which showed a good agreement with the published data.

• 出版日期2015-1
• 单位同济大学