Affiliation:
1. Beijing University of Aeronautics and Astronautics
Abstract
A series of NiTiAl based alloys with different amount of Nb addition were prepared and the
effects of Nb on both the mechanical properties and microstructure evolution were investigated. The
addition of Nb can remarkably enhance the high temperature yield strength of these alloys. The
highest yield strength of the alloys with 10 at% Nb reaches 1237MPa at 873K and 875MPa at 973K,
respectively. The Ti2Ni(Al,Nb) precipitates and the solution strengthening effect might be responsible
for the high yield stress achieved at high temperature.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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