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Erschienen in: Metallurgical and Materials Transactions A 7/2011

01.07.2011

A Self-Consistent Approach for Modeling the Flow Behavior of the Alpha and Beta Phases in Ti-6Al-4V

verfasst von: Jeoung Han Kim, S. L. Semiatin, You Hwan Lee, Chong Soo Lee

Erschienen in: Metallurgical and Materials Transactions A | Ausgabe 7/2011

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Abstract

The flow behavior of the α and β phases in Ti-6Al-4V was interpreted in the context of a self-consistent modeling formalism. For this purpose, high-temperature compression tests were conducted at various temperatures for a single-phase α alloy (Ti-7Al-1.5V), a variety of near-β alloys, and the two-phase alloy Ti-6Al-4V, each with an equiaxed microstructure. The flow behavior of the α phase in Ti-6Al-4V was deduced from the experimental results of the single-phase α alloy. The flow behavior of the β phase, which was predicted by using the self-consistent approach and the measured flow behaviors of Ti-6Al-4V and Ti-7Al-1.5V, showed good agreement with direct measurements of the various near-β alloys. From these results, it was shown that the strength of the α phase is approximately three times higher than that of the β phase at temperatures between 1088 K and 1223 K (815 °C and 950 °C). It was also concluded that the relative strain rates in the two phases varies significantly with temperature. The usefulness of the approach was confirmed by comparing the predicted and measured flow stresses for other Ti-6Al-4V and near-α alloys.

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Metadaten
Titel
A Self-Consistent Approach for Modeling the Flow Behavior of the Alpha and Beta Phases in Ti-6Al-4V
verfasst von
Jeoung Han Kim
S. L. Semiatin
You Hwan Lee
Chong Soo Lee
Publikationsdatum
01.07.2011
Verlag
Springer US
Erschienen in
Metallurgical and Materials Transactions A / Ausgabe 7/2011
Print ISSN: 1073-5623
Elektronische ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-010-0567-x

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