Development of Recrystallization Texture in Commercially Pure Titanium: Experiments and Simulation
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https://doi.org/10.1007/s11837-020-04447-3 2020 The Minerals, Metals & Materials Society
MESOSCALE MATERIALS SCIENCE
Development of Recrystallization Texture in Commercially Pure Titanium: Experiments and Simulation GYAN SHANKAR,1 SREENIVAS RAGURAMAN,1 LUIS A. BARRALES-MORA,2 and S. SUWAS 1,3
1.—Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India. 2.—George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 2 Rue Marconi, 57070 Metz, France. 3.—e-mail: [email protected]
The recrystallization behaviour of cold-rolled (CR) commercially pure (cp)titanium was investigated by experiments and simulations. The recrystallization texture in cp-titanium depends upon the deformation texture. The main texture components of the lower deformed (50% CR) material are {1014} < 2131 >, {1013} < 2131 > and{1235} < 2311 >, all having weak intensity, and in the case of 70% cold rolling the texture component is {1013} < 3031 >. For the simulations, a parallel 3D cellular automata (CA) model for recrystallization was employed. The simulation results showed good agreement with the recrystallization kinetics, grain size distribution, microstructure and texture. The mechanism of recrystallization and the evolution of recrystallization texture were found to depend on the site of nucleation, i.e., whether it is formed at grain boundaries, within the grain, in the lath region or in the highly deformed region such as shear bands.
INTRODUCTION Commercially pure Ti (CP-Ti) is a promising material in biomedical applications because of its good biocompatibility and high corrosion resistance. It is also used as a structural material in aerospace and marine applications and chemical plants because of its high strength-to-weight ratio. Moreover, it appears to be a model hexagonal closed packed (HCP) material to examine the various aspects of HCP materials with a less than ideal axial ratio (c/a). Due to the above-mentioned attributes, the study deformation and recrystallization behaviour of cp-titanium are very important, as these processes constitute important parts of the overall shape making. An important outcome of the deformation and recrystallization processes is the evolution of the crystallographic texture. Due to the large dependence of the mechanical properties on texture, it is imperative to understand the evolution of recrystallization texture. Opinions in the literature vary with regard to the mechanisms that (Received September 12, 2020; accepted October 12, 2020)
control the evolution of recrystallization texture in titanium. The typical deformation texture reported in cp-titanium has {2115} < 0110 > as the major component, and the typical recrystallization texture comprises the {1013} < 1210 > component.1–5 Bozzolo et al.2 suggested that the recrystallization texture in titanium develops from the deformation texture {2115} < 0110 > by 30 rotation about the c-axis. It has been suggested that the component {1013} < 1210 > of recrystallization texture is forme
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