Title

Mathematical Modeling for High Temperature Flow Behavior of As-cast Ti-45Al-8.5 Nb-(w, B, Y) Alloy

Editor(s)

Edwards, K. L.

Abstract

The hot deformation behaviors of as-cast Ti-45Al-8.5Nb-(W,B,Y) alloy were studied. A mathematical model has been developed to predict the stress-strain curves of this high Nb containing TiAl based alloy during hot deformation. This model is based on a phenomenological representation of the shape of stress-strain curves, which can be represented by Zener-Hollomon parameter in a hyperbolic sinusoidal type equation. Material constants in the equation were expressed in polynomial form of strain; parameters in the polynomials were obtained by least-square method. The stress-strain curves obtained by this model are in good agreement with experimental results.

Department(s)

Mathematics and Statistics

Keywords and Phrases

Non-ferrous metals and alloys; forming; plastic behavior

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2009 Elsevier, All rights reserved.

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