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Mathematical modeling for high temperature flow behavior of as-cast Ti–45Al–8.5Nb–(W,B,Y) alloy

He, Xiaoming / Yu, Zhongqi / Liu, Guiming / Wang, Wenge / Lai, Xinmin

AbstractThe 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.

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Mathematical modeling for high temperature flow behavior of as-cast Ti–45Al–8.5Nb–(W,B,Y) alloy

He, Xiaoming / Yu, Zhongqi / Liu, Guiming / Wang, Wenge / Lai, Xinmin

AbstractThe 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.

Mathematical modeling for high temperature flow behavior of as-cast Ti–45Al–8.5Nb–(W,B,Y) alloy

He, Xiaoming / Yu, Zhongqi / Liu, Guiming / Wang, Wenge / Lai, Xinmin

AbstractThe 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.

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Title:

Mathematical modeling for high temperature flow behavior of as-cast Ti–45Al–8.5Nb–(W,B,Y) alloy

Contributors:

He, Xiaoming (author) / Yu, Zhongqi (author) / Liu, Guiming (author) / Wang, Wenge (author) / Lai, Xinmin (author)

Publication date:

2008-04-16

Size:

4 pages

ISSN:

DOI:

https://doi.org/10.1016/j.matdes.2008.04.046

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Non-ferrous metals and alloys (A) , Forming (C) , Plastic behavior (F)

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