Effect of crystallographic texture on the isothermal beta grain-growth kinetics of Ti–6Al–4V

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 332; no. 1; pp. 343 - 350
• Main Authors: Ivasishin, O.M., Shevchenko, S.V., Semiatin, S.L.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.2002; Elsevier
• Subjects: Annealing; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Grain growth; Materials science; Other heat and thermomechanical treatments; Physics; Texture; Titanium; Treatment of materials and its effects on microstructure and properties; Titanium; Annealing; Grain growth; Texture; Isothermal annealing; Equiaxed structure; Thermomechanical treatments; Kinetics; Alloy-Ti90Al6V4; Experimental study; Microstructure; Titanium base alloys
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/S0921-5093(01)01755-5

The effect of crystallographic texture on the kinetics of grain growth during isothermal beta annealing of Ti–6Al–4V was established. For this purpose, samples were subjected to a thermomechanical process to produce material with a uniform, fine equiaxed-alpha microstructure with either a strong or weak (110) beta-phase texture. Grain growth measurements revealed that the classical isothermal grain-growth relation was incapable of describing the observations. Specifically, the grain-growth exponent n was found to have a strong dependence on temperature. In addition, the phenomenon of discontinuous grain growth, or a stagnation in the growth behavior at short times, was documented and ascribed to changes in texture during the grain-growth process.