Materials Science and Engineering A
The mechanical behavior of dual-phase NiAl(Cr) microstructures, consisting of elongated primary NiAl grains aligned with an intergranular NiAl-Cr eutectic phase, produced by extrusion of a cast NiAl(Cr) alloy, has been examined. Chromium addition to create a dual phase NiAl-based aligned microstructure leads to large increases in the yield strength but no significant toughness improvement. This is achieved primarily by solid solution hardening and precipitation hardening. The constitutional hardening rate resulting from deviations from stoichiometry in the nickel-rich NiAl was estimated to be about 66 MPa per atomic per cent of nickel.
Tiwari, R.; Tewari, Surendra N.; Asthana, R.; and Garg, A., "Development of NiAl-Based Intermetallic Alloys: Effect of Chromium Addition" (1995). Chemical & Biomedical Engineering Faculty Publications. 56.
Tiwari, R., Tewari, S., Asthana, R., , & Garg, A. (1995). Development of NiAl-based intermetallic alloys: Effect of chromium addition. Materials Science and Engineering: A, 192-193, 356-363.
192 - 193
NOTICE: this is the author’s version of a work that was accepted for publication in Materials Science and Engineering A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Science and Engineering A, 192 -193, Part 1, (February 15, 1995) DOI 10.1016/0921-5093(94)03218-1