Tensile and Creep Behavior of Ordered Orthorhombic Ti2A1Nb-Based Alloys-Reference-Cited by-同舟云学术

Tensile and Creep Behavior of Ordered Orthorhombic Ti2A1Nb-Based Alloys

Published:1990 Issue: Volume:213 Page:
ISSN:0272-9172
Container-title:MRS Proceedings
language:en
Short-container-title:MRS Proc.

Author:

Rowe R.G.,Konitzer D.G.,Woodfield A.P.,Chesnutt J.C.

Abstract

ABSTRACTTitanium aluminide alloys with compositions near Ti-25A1-25Nb at.% were prepared by both rapid solidification and ingot techniques. Their tensile and creep properties were studied after heat treatment to produce various microstructures containing ordered orthorhombic (O) [1], ordered beta (βo), and α2 phases. It was found that these alloys had higher specific strength from room temperature to 760°C than conventional α2 alloys. Ductility and tensile strength of O+βo alloys were strongly dependent upon heat treatment, with the highest strength observed as-heat-treated, and the highest ductility after long term aging. The creep resistance of single phase O and two phase O+βo alloys was strongly dependent upon heat treatment.

Publisher

Springer Science and Business Media LLC

Subject

General Engineering

Reference10 articles.

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2. 10. Marquardt B.J. , Scarr G.K. , Chesnutt J.C. , Rhodes C.G. and Fraser H.L. , Report # WRDC-TR-89–4133, Final report, Contract # F33615-85-C-5167, U.S. Air Force, WRDC, Wright-Patterson AFB, OH, 1990

3. A new ordered orthorhombic phase in a Ti3AlNb alloy

4. Creep and discontinuous precipitation in a Ti3Al-Nb alloy at 923°K

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