Abstract
The cold rolling texture evolution under different strain states caused by coupled effects from different combinations of roll gap geometry and friction in pure titanium with initial typical recrystallized texture has been studied using viscoplastic self-consistent simulations. Under plane strain state, the texture is dominated by a typical cold rolling fiber texture RD//<1010> in pure titanium. However, when shear deformation is induced and increased, RD//<1010> fiber texture is decreased, whereas basal texture (0001)[1010] is increased and a strong partial fiber texture RD//<2110> is formed. The variation of cold rolling texture at different strain states can be ascribed to variation of relative contribution from activation of prismatic, basal and pyramidal slip.
Highlights
Pure titanium is widely used in many key fields such as aerospace, chemical, energy and ocean industries due to its high specific strength and excellent corrosion resistance [1]
Because of the inherent low symmetry of the hexagonal close packed (HCP) structure, pronounced mechanical anisotropy is occurred in pure titanium during plastic deformation, which will significantly influence subsequent further forming of these metals into different shapes/parts [2]
Extensive researches have been conducted to reveal the relationship between strain state and deformation texture in FCC and BCC metals and showed that deformation texture was strongly influenced by shear deformation [4,5,6]
Summary
Pure titanium is widely used in many key fields such as aerospace, chemical, energy and ocean industries due to its high specific strength and excellent corrosion resistance [1]. Because of the inherent low symmetry of the hexagonal close packed (HCP) structure, pronounced mechanical anisotropy is occurred in pure titanium during plastic deformation, which will significantly influence subsequent further forming of these metals into different shapes/parts [2]. The mechanical anisotropy can be decreased by controlling texture through plastic deformation [3]. The deformed texture can be largely determined by strain state. Studies on relationship between shear deformation and texture evolution in pure titanium are rarely reported. In the present work, the effect of the strain state focused on shear deformation caused by coupled effects of roll gap geometry and friction on rolling texture evolution in pure titanium was investigated using crystal plasticity simulation
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