Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 19    Special 2    September 2009

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Multiscale simulation and nanoindentation experimental study of initial plasticity of Fe single crystal
YUAN Lin(袁 林)1, 2, SHAN De-bin(单德彬)1, 2, GUO Bin(郭 斌)1, 2

1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
2. Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education,
Harbin Institute of Technology, Harbin 150001, China

Abstract:It is very important to understand the initial plastic behavior of metals at microscale. In order to research the initial plasticity of body centered cubic metals in micro-/nano-scale, the multiscale simulation method and experimental study were used to study the nanoindentation process of Fe single crystal. The results show that the first abruption of load—displacement curve in nanoindentation of Fe single crystal can be attributed to the first transition from elastic to plastic deformation characterized by the dislocation emission.

 

Key words: initial plasticity; nanoindentation; multiscale simulation; dislocation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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