Constitutive Analysis to Predict Elevated Temperature Flow Behavior of TC21 Titanium Alloy

Abstract:

In order to study the hot workability of TC21 titanium alloy, isothermal hot compression tests were conducted in the temperatures range of 1123~1203K and strain rates range of 0.01~10s-1. The influence of strain was incorporated in hyperbolic sine constitutive equation by considering the effect of strain on material constants. Correlation coefficient (R) and average absolute relative error (AARE) were introduced to verify the validity of the developed hyperbolic sine constitutive equation. The values of R and AARE were determined to be 0.9891 and 7.753% respectively, which indicated that the developed hyperbolic sine constitutive equation considering strain compensation could precisely predict the flow behavior of TC21 titanium alloy throughout the entire range of temperatures and strain rates.

• Periodical: Advanced Materials Research (Volume 811)
• Pages: 152-156
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.811.152
• Online since: September 2013
• Authors: Li Bin Jia, Lin Li, Yi Ru
• Keywords: Compensation of Strain, Constitutive Equation, Flow Behavior, TC21 Titanium Alloy

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