Title

Microstructures and Mechanical Properties of Two-Phase Alloys Based on NbCr₂

Author Info

Katherine C. Chen, Los Alamos National LaboratoryFollow
Paul G . Kotula, Sandia National Laboratories
Carl M. Cady, Los Alamos National Laboratory
Michael E. Mauro, Los Alamos National Laboratory
Dan J. Thoma, Los Alamos National Laboratory

Recommended Citation

Published in Materials Research Society Symposium Proceedings, Volume 552, Fall October 1, 1998.

NOTE: At the time of publication, the author Katherine Chen was not yet affiliated with Cal Poly.

Abstract

A two-phase, NbCrTi alloy (bcc + C15 Laves phase) has been developed using several alloy design methodologies. In efforts to understand processing-microstructure-property relationships, different processing routes were employed. The resulting microstructures and mechanical properties are discussed and compared. Plasma arc melted (PAM) samples served to establish baseline, as-cast properties. In addition, a novel processing technique, involving decomposition of a supersaturated and metastable precursor phase during hot isostatic pressing (HIP), was used to produce a refined, equilibrium two-phase microstructure. Quasi-static compression tests as a function of temperature were performed on both alloy types. Different deformation mechanisms were encountered based upon temperature and microstructure.

Disciplines

Materials Science and Engineering

Copyright

© 1998, Materials Research Society. All rights Reserved.