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Kinetics of Post-dynamic Coarsening and Reverse Transformation in Ti-6Al-4V

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Abstract

Experiments were carried out on the post-dynamic coarsening of alpha and reverse transformation of Ti-6Al-4V. The post-dynamic coarsening followed rn vs time kinetics and the n = 3 best fit indicated that it was controlled by bulk diffusion, i.e., by vanadium diffusion through the beta matrix. Its rate was one order of magnitude faster than that applicable to static coarsening. The reverse transformation was characterized using a compression dilatometer and occurred in two stages; the first was transformation on dislocations; the second involved the growth of the alpha structure.

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Authors and Affiliations

  1. Materials Engineering, McGill University, 3610 University St., Montreal, H3A 0C5, Canada

    Baoqi Guo & John J. Jonas

  2. Department of Mechanical Engineering, École de Technologie Supérieure, 1100 rue Notre-Dame Ouest, Montreal, H3C 1K3, Canada

    Ameth Fall & Mohammad Jahazi

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  1. Baoqi Guo
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  2. Ameth Fall
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  3. Mohammad Jahazi
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  4. John J. Jonas
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Correspondence to Baoqi Guo.

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Manuscript submitted August 7, 2018.

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Guo, B., Fall, A., Jahazi, M. et al. Kinetics of Post-dynamic Coarsening and Reverse Transformation in Ti-6Al-4V. Metall Mater Trans A 49, 5956–5961 (2018). https://doi.org/10.1007/s11661-018-4952-1

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