Modeling of flow curve at high temperature for a Ti-6Al-4V alloy
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Publication Details
Author list: Porntadawit J., Uthaisangsuk V., Choungthong P.
Publisher: Trans Tech Publications
Publication year: 2014
Volume number: 849
Start page: 195
End page: 199
Number of pages: 5
ISBN: 9783037859254
ISSN: 1022-6680
eISSN: 1662-8985
Languages: English-Great Britain (EN-GB)
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Abstract
Titanium alloy grade Ti-6Al-4V has been widely applied for many applications such as aircraft structural components, machine parts, and parts for medical equipments. To understand deformation behavior and microstructure evolution of the material during hot forming process is significant for achieving desired dimension and final mechanical properties of a product. In this study, stress-strain responses of the Ti-6Al-4V alloy were investigated using hot compression tests at different temperatures and strain rates. The determined flow curves of the alloy were subsequently calculated according to the constitutive models based on Cingara equation and Shafiei and Ebrahimi equation and compared with the experimental results. By this manner, influences of work hardening and dynamic recrystallization on the hot deformation behavior of material could be described. Accurate prediction of flow curves can considerably improve the forming process design. ฉ (2014) Trans Tech Publications, Switzerland.
Keywords
Flow curves, Hot deformation behavior
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