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Temperature Dependence of Activation Enthalpy for Yielding in Bimodal Ti–6Al–4V by Bhargavi Rani Anne; Masaki Tanaka; Tatsuya Morikawa is a Engineering article available to read on EtoBox.

What is Temperature Dependence of Activation Enthalpy for Yielding in Bimodal Ti–6Al–4V about?

Mechanical properties relating to the thermally activated process of yielding was investigated in Ti6Al4V with a bimodal microstructure, consisting of both primary alpha grains and lamellar colonies of secondary alpha/beta lamellae. The temperature dependence of yield stress, effective stress, activation volume, and activation enthalpy were investigated between 77 K and 650 K. The yield stress and effective stress decreased with increasing temperature. It was found that the temperature dependence of activation enthalpy for yielding shows values between those obtained from basal slips and prismatic slips investigated in single crystalline ¡-titanium. This suggests that the thermally activated processes which control the yielding of bimodal Ti6Al4V is the combination of basal and prismatic slips.

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Author

Bhargavi Rani Anne; Masaki Tanaka; Tatsuya Morikawa

Publisher

Japan Institute of Metals; The Japan Institute of Metals; Sendai: Japan Institute of Metals; Sendai: Japan Institute of Metals and Materials (ISSN 1345-9678)

Published

2019

Language

EN

Field

Engineering (Physical Sciences)