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Texture Studies of Gamma Titanium Aluminide Sheets Produced by Melt Overflow Rapid Solidification

Published online by Cambridge University Press:  15 February 2011

M. L. Weaver ,
H. Garmestani  and
G. Das
M. L. Weaver
Affiliation:
Center for Nonlinear & Nonequilibrium Aeroscience, Florida A&M University, Tallahassee, FL 32306–4005
H. Garmestani
Affiliation:
Department of Mechanical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310–2175
G. Das
Affiliation:
Pratt & Whitney Aircraft, West Palm Beach, FL 33410–9600
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Abstract

Texture analyses have been conducted on gamma titanium aluminide (γ-TiAI) strips produced using the recently developed plasma melt overflow process. The results indicated that <101] deformation textures persisted in the γ-phase while <0002>, <1010> and <1020> texture components were all observed in the α2-phase. After annealing at 1065°C/48 hrs., the γ-phase textures did not change while the α2-phase changed from a basal to a <1010> texture. It is suggested that the texture development in direct cast γ strips produced using this technique are a direct result of lattice rotations and residual stresses caused by nonuniform cooling.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 243
Copyright
Copyright © Materials Research Society 1997

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