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Microindentation of Coarse-Grained Polycrystalline α-Brass

Published online by Cambridge University Press:  11 February 2011

Nian Zhang ,
Changjin Xie  and
Wei Tong
Nian Zhang
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT
Changjin Xie
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT
Wei Tong
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT
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Abstract

Effects of the indent depth, the distance between the indent and the grain boundary, grain sizes, and crystallographic orientations on the microhardness of annealed coarse-grained polycrystalline α-brass were investigated using a Vickers indenter with indents much smaller than the α-brass grains (ranging from 80 μm to 550 μm). It is found that the microhardness of α-brass crystals shows a strong dependence on the indentation depth when it is smaller than 5 μm and a very weak dependence on both the distance between the indent and the grain boundary and the grain size when the indentation depth is about 5 μm and more. No significant dependence of the microhardness on the crystallographic orientations was observed in the fourteen grains of different orientations studied in this investigation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 750: Symposium Y – Surface Engineering 2002–Synthesis, Characterization and Applications , 2002 , Y1.6
Copyright
Copyright © Materials Research Society 2003

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References

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