Design of titanium alloys showing plasticity induced transformation

Neelakantan, Suresh and Rivera-Díaz-del-Castillo, P. E J and Van Der Zwaag, Sybrand (2010) Design of titanium alloys showing plasticity induced transformation. In: THERMEC 2009 Supplement. Advanced Materials Research, 89-91 . UNSPECIFIED, DEU, pp. 405-410. ISBN 0878492933

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Due to Plasticity induced Transformation in metastable β-Ti-10V-2Fe- 3Al (wt.%) alloy (PiTTi) upon deformation, a noticeable improvement in mechanical properties is observed. Among the main factors controlling such effect are the β grain size and its composition. Such phase transforms into martensite upon quenching. Its martensite start temperature (Ms) varies in accordance with its composition. Following Ghosh and Olson's theory, a thermodynamics based model to predict the compositional dependence of the Ms temperature is developed, and successfully validated for Ti-X (X = Fe, Cr, Mo, V, Nb, Zr and Al) binary alloys. The model has been used to design new alloys displaying a tailored PiTTi effect.

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25 May 2018 09:12
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01 Jan 2022 06:37