4.7 Article

Tensile properties of a refractory metal base in situ composite consisting of an Nb solid solution and hexagonal Nb5Si3

Journal

SCRIPTA MATERIALIA
Volume 48, Issue 10, Pages 1439-1444

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S1359-6462(03)00084-8

Keywords

refractory metals; metal matrix composites; intermetallic compounds; fracture; high temperature deformation

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Tensile properties and fracture behavior of an Nb-SS/Nb5Si3 in situ composite in which the silicide has a hexagonal structure has been investigated. Excellent tensile strength of 460 MPa is obtained at 1470 K. The fracture is attributed to cleavage of the Nb5Si3, Nb-SS/Nb5Si3 interface separation and ductile rupture of Nb-SS. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

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