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High Temperature Creep Behavior of Single Crystal Gammpraime and Gamm Laloys

Published online by Cambridge University Press:  26 February 2011

M. V. Nathal ,
J. O. Diaz  and
R. V. Miner
M. V. Nathal
Affiliation:
NASA Lewis Research Center, Cleveland, OH, 44135
J. O. Diaz
Affiliation:
NASA Lewis Research Center, Cleveland, OH, 44135
R. V. Miner
Affiliation:
NASA Lewis Research Center, Cleveland, OH, 44135
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Abstract

The creep behavior of single crystals of γ′ and γ alloys were investigated and compared to the response of two phase superalloys tested previously. High temperature deformation in the γ alloys was characteristic of a climb controlled mechanism, whereas the γ′ based materials exhibited glide controlled creep behavior. The superalloys were much more creep resistant than their constituent phases, which indicates the importance of the γ-γ′ interface as a barrier for dislocation motion during creep.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 269
Copyright
Copyright © Materials Research Society 1989

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References

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