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Size Effect Characterization for Nanostructured Material in Nanoindentation Test

Published online by Cambridge University Press:  01 February 2011

Yueguang Wei ,
Ying Du ,
Siqi Shu  and
Chen Zhu
Yueguang Wei
Affiliation:
LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P.R. China
Ying Du
Affiliation:
LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P.R. China
Siqi Shu
Affiliation:
LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P.R. China
Chen Zhu
Affiliation:
LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P.R. China
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Abstract

Based on the microscopic observations and measurements, the mechanics behaviors of the nanostructured material (the surface-nanocrystallized Al-alloy material) at microscale are investigated experimentally and theoretically. In the experimental research, the hardness-indent depth curves or relations are measured by using both the method of randomly selecting loading points on the specimen surface and the continuous stiffness method. In the theoretical simulation, based on both the material microstructure characteristics and the experimental features of the nanoindentation, the microstructure cell model is developed and the strain gradient plasticity theory is adopted. The material hardness-indent depth curves are predicted and simulated. Through comparison of the experimental results with the simulation results, the material parameters and the model parameters are determined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 788: Symposium L – Continuous Nanophase and Nanostructured Materials , 2003 , L8.2
Copyright
Copyright © Materials Research Society 2004

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References

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