NDLI: Hot deformation behavior and Zener-Hollomon parameter constitutive model of Ti-22Al-26Nb-2Ta-0.5Y alloy

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Hot deformation behavior and Zener-Hollomon parameter constitutive model of Ti-22Al-26Nb-2Ta-0.5Y alloy

Content Provider	Scilit
Author	Chen, Xuhuai Wang, Kulu Li, Xin Zhou, Feng Wan, Peng
Copyright Year	2018
Description	Journal: Iop Conference Series: Materials Science and Engineering The thermal compression test of Ti-22Al-26Nb-2Ta-0.5Y alloy was performed using a Gleeble-3500 thermal simulator at deformation temperatures ranging from 900°C to 1150°C and strain rates ranging from $0.001s^{-1}$ to $10s^{-1}$. The results show that the flow stress of Ti-22Al-26Nb-2Ta-0.5Y alloy increases with the increase of deformation rate and decreases with the increase of deformation temperature. Based on the peak stress, the Arrhenius type constitutive model of Ti-22Al-26Nb-2Ta-0.5Y alloy was constructed using Zener-Hollomon parameters. The results show that this constitutive model has good prediction accuracy for peak stress. The correlation coefficient between the predicted value and the experimental value is R = 0.9922, the average relative error E is 8.36%, and the deviation within 15% accounted for about 96.67% of the total validation data points. This study provided a reference for the formulation of the hot working processing scheme for Ti-22Al-26Nb-2Ta-0.5Y alloy and the application of the Z-parameter constitutive model.
Related Links	http://iopscience.iop.org/article/10.1088/1757-899X/397/1/012010/pdf
ISSN	17578981
e-ISSN	1757899X
DOI	10.1088/1757-899x/397/1/012010
Journal	Iop Conference Series: Materials Science and Engineering
Issue Number	1
Volume Number	397
Language	English
Publisher	IOP Publishing
Publisher Date	2018-08-31
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Materials Science and Engineering Nuclear Energy and Engineering
Content Type	Text
Resource Type	Article

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