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Deformation Mechanisms in a Laves Phase

Published online by Cambridge University Press:  01 January 1992

Yaping Liu ,
Samuel M. Allen  and
James D. Livingston
Yaping Liu
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
Samuel M. Allen
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
James D. Livingston
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
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Abstract

The stress-induced phase transformation between C36 and C15 structures in Fe2Zr is studied by electron microscopy. The nucleus of the transformation is believed to be some pre-existing C15 layers in C36 particles. Microstructural evidence for three mechanisms of growth of a new phase were found: Fault accumulation and rearrangement, moving of individual partial dislocations between two phases, and the migration of microscopic ledges composed of a series of Shockley partials between C36 and C15. Plastic deformation by slip on non-basal planes of C36 caused by indentation is studied.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 203
Copyright
Copyright © Materials Research Society 1995

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References

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