Microstructural evolution and mechanical properties of selective laser melted Ti-6Al-4V induced by annealing treatment

Pei Wang, Feng hua Chen, J. Eckert, S. Pilz, S. Scudino, K. G. Prashanth

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Ti-6Al-4V specimens were fabricated by selective laser melting (SLM) to study the effect of thermal treatment on the phase transformation, elemental diffusion, microstructure, and mechanical properties. The results show that vanadium enriches around the boundary of α phases with increasing annealing temperature to 973 K, and α′ phases transform into α+β at 973 K. The typical α′ martensite microstructure transforms to fine-scale equiaxed microstructure at 973 K and the equiaxed microstructure significantly coarsens with increasing annealing temperature to 1273 K. The SLM Ti-6Al-4V alloy annealed at 973 K exhibits a well-balanced combination of strength and ductility ((1305±25) MPa and (37±3) %, respectively).
Original languageEnglish
Pages (from-to)1068-1077
Number of pages10
JournalJournal of Central South University = Zhongnan-Daxue-xuebao : yingwen-ban
Issue number4
Publication statusPublished - 19 May 2021

Bibliographical note

Publisher Copyright:
© 2021, Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature.


  • annealing treatment
  • mechanical properties
  • microstructure
  • selective laser melting
  • Ti-6Al-4V

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