Open Access

ARTICLE

Study of Deformation Mechanisms in Titanium by Interrupted Rolling and Channel Die Compression Tests

Lei Bao^1,2, Christophe Schuman¹, Jean-sébastien Lecomte¹, Marie-Jeanne Philippe¹, Xiang Zhao², Liang Zuo², Claude Esling¹

1 LETAM, CNRS FRE 3143 (former UMR 7078) University of Metz, 57045 Metz, France
2 Laboratory for Anisotropy and Texture of Materials (MOE), NEU, Shenyang, 110004, China

Computers, Materials & Continua 2010, 15(2), 113-128. https://doi.org/10.3970/cmc.2010.015.113

Abstract

The mechanisms of small plastic deformation of titanium (T40) during cold rolling and channel die compression by means of "interrupted in situ" EBSD orientation measurements were studied. These interrupted EBSD orientation measurements allow to determine the rotation flow field which leads to the development of the crystallographic texture during the plastic deformation. Results show that during rolling, tension twins and compression twins occur and various glide systems are activated, the number of grains being larger with twins than with slip traces. In channel die compression, only tension twins are observed in some grains, whereas slip traces can be spotted in almost all observed grains. The different stress conditions and different strain rates existing under the two modes of deformation lead to the activation of different deformation mechanisms.

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Keywords

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