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The Effect of Low-Angle and High-Angle Grain Boundaries on Elevated Temperature Strength

Published online by Cambridge University Press:  15 February 2011

M. E. Kassner
M. E. Kassner*
Affiliation:
Department of Mechanical Engineering, Center for Advanced Materials Research, Oregon State University, Corvallis, OR 97331, USA
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Abstract

The influence of small (subgrain) misorientation interfaces on the mechanical behavior of metals and alloys deforming within the creep regime has been intensively studied over the past several decades. Controversies have existed, but some new experiments suggest, contrary to the general opinion, that low-angle boundaries are not associated with the rate controlling process for plasticity and do not affect strength. The new evidence will be discussed in terms of other established experimental trends. Large-angle boundaries may have a smaller effect on elevated temperature strength than at ambient temperatures and do not appear to dramatically affect elevated temperature strength. Superplastic effects are not addressed.

Type
Aricles
Information
MRS Online Proceedings Library (OPL) , Volume 362: Symposium J – Grain-Size and Mechanical Properties--Fundamentals and Applications , 1994 , 157
Copyright
Copyright © Materials Research Society 1995

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