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Journal Articles Advanced Engineering Materials Year : 2010

Study of Plastic Deformation in Hexagonal Metals by Interrupted In-Situ EBSD Measurement

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Abstract

The titanium textures observed at room temperature in the a-hexagonal close-packed (HCP) structure are inherited to some extent from their prior texture in the b-body centered cubic (BCC) structure. [1] However, most of the research effort concentrated on the strong deformation textures that titanium, [2-4] like other HCP metals, develops during the rolling at room temperature, that lead to a pronounced plastic anisotropy of the polycrystalline materials. [5] The mechanical response of HCP metals is strongly dependent on the combination of active deformation modes: slip and twinning. The specific deformation mechanisms depend on the c/a ratio, the available deformation modes, the critical resolved shear stress (CRSS) for slip and the twin activation stress, as well as the imposed deformation relative to the crystallographic texture. For pure titanium, 1010 È É 1120 slip is the primary deformation mode. This slip mode alone, however, cannot accommodate the imposed strain in the grains of a polycrystalline aggregate, because it cannot provide five independent slip systems. [4,6-9] Additional deformation
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Dates and versions

hal-03864520 , version 1 (26-12-2022)

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Lei Bao, Jean-Sébastien Lecomte, Christophe Schuman, Marie-Jeanne Philippe, Xiang Zhao, et al.. Study of Plastic Deformation in Hexagonal Metals by Interrupted In-Situ EBSD Measurement. Advanced Engineering Materials, 2010, 12 (10), pp.1053 - 1059. ⟨10.1002/adem.201000074⟩. ⟨hal-03864520⟩

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