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The Athermal Strengthening of Discontinuous Reinforced NiAl Composites

Published online by Cambridge University Press:  15 February 2011

L. Wang ,
K. Xu  and
R. J. Arsenault
L. Wang
Affiliation:
Metallurgical Materials Laboratory, Dept. of Materials & Nuclear Engineering, University of Maryland, College Park, MD 20742-2115
K. Xu
Affiliation:
Metallurgical Materials Laboratory, Dept. of Materials & Nuclear Engineering, University of Maryland, College Park, MD 20742-2115
R. J. Arsenault
Affiliation:
Metallurgical Materials Laboratory, Dept. of Materials & Nuclear Engineering, University of Maryland, College Park, MD 20742-2115
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Abstract

An increase in the athermal component of the yield stress at low temperatures is the caused of the high temperature strengthening of discontinuously reinforced NiAl matrix composites. The reinforcements stabilize the microstructure. The strengthening in the temperature range of 300–1273K, is believed to be related to the grain size refinement and effective pinning of grain boundaries. This conclusion was obtained from analysis of data from AlN, TiB2 and Al2O3/NiAl particulate composites.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 350: Symposium U – Intermetallic Matrix Composites III , 1994 , 237
Copyright
Copyright © Materials Research Society 1994

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