Ultrafine-grained β-type titanium alloy with nonlinear elasticity and high ductility
2008; American Institute of Physics; Volume: 92; Issue: 4 Linguagem: Inglês
10.1063/1.2839594
ISSN1520-8842
AutoresS. J. Li, T. C. Cui, Y. L. Li, Yulin Hao, Rui Yang,
Tópico(s)Intermetallics and Advanced Alloy Properties
ResumoAlthough stress-induced martensitic transformation accelerates grain refinement during plastic deformation, it results in serious damage to recoverable elasticity and ductility of severely cold-rolled multifunctional titanium alloys. Here, large-scale nonlinear elasticity and high ductility were achieved simultaneously in an ultrafine-grained Ti–Nb–Zr–Sn alloy by severe warm rolling at 473K to suppress the martensitic transformation from the β to the α″ phase. These results suggest that high strength can be attained in nonlinear elastic titanium alloys by improving the stability of the β phase with body-centered-cubic crystal structure through both composition design and grain refinement.
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