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Temperature and Orientation Dependence of Surface Film Effects in Single Crystal Nial

Published online by Cambridge University Press:  28 February 2011

R.D. Noebe ,
J.T. Kim  and
R. Gibala
R.D. Noebe
Affiliation:
Department of Materials Science and Engineering, The University of Michigan, Ann Arbor, MI 48109.
J.T. Kim
Affiliation:
Department of Materials Science and Engineering, The University of Michigan, Ann Arbor, MI 48109.
R. Gibala
Affiliation:
Department of Materials Science and Engineering, The University of Michigan, Ann Arbor, MI 48109.
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Abstract

During deformation of bcc metals and bcc-based ordered alloys, conditions of elastic and plastic constraint associated with the presence of thin adherent surface films can be responsible for introducing increased densities of mobile dislocations in the metal, resulting in enhanced ductility and reduced yield and flow stresses of the film-coated materials. In the present paper, surface film effects were investigated as a function of temperature and crystallographic orientation for single crystal β-NiAl. Appreciable temperature-dependent and orientation-dependent surface film effects were observed, as were significant effects of film adherence on the observation of surface film softening.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 81: Symposium H – High-Temperature Ordered Intermetallic Alloys II , 1986 , 473
Copyright
Copyright © Materials Research Society 1987

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References

REFERENCES

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