2012•Advanced materials researchOpen access

Study on Constitutive Relationship of Ti-6Al-4V-Rare Earth Titanium Alloy during High Temperature Deformation

Yan Min Zhang, Pei Feng Zhao, Li Zhang, Yan Zhou

Abstract

According to compressive test date, relationship between flow stress, temperature, strain rate and strain is studied through single and multiple regression, and constitutive equation is researched. The results show the relationship between flow stress and stain is applied to hyperbolic sine equation in the hot compressive deformation of Ti-6Al-4V-rare earth titanium alloy. Relationship between logarithmic hyperbolic sine of its flow stress and reciprocal of absolute temperatures is liner, and hot compressive deformation is controlled by activation energy.

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Key concepts: Materials science, Constitutive equation, Deformation (meteorology), Flow stress, Titanium alloy, Strain rate, Stress (linguistics), Metallurgy