Mathematical Modeling for High Temperature Flow Behavior of As-cast Ti-45Al-8.5 Nb-(w, B, Y) Alloy
Edwards, K. L.
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.
X. He et al., "Mathematical Modeling for High Temperature Flow Behavior of As-cast Ti-45Al-8.5 Nb-(w, B, Y) Alloy," Materials & Design, Elsevier, Jan 2009.
The definitive version is available at http://dx.doi.org/10.1016/j.matdes.2008.04.046
Mathematics and Statistics
Keywords and Phrases
Non-ferrous metals and alloys; forming; plastic behavior
Article - Journal
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