TY - JOUR

T1 - Microstructural evolution and mechanical properties of selective laser melted Ti-6Al-4V induced by annealing treatment

AU - Wang, Pei

AU - Chen, Feng hua

AU - Eckert, J.

AU - Pilz, S.

AU - Scudino, S.

AU - Prashanth, K. G.

N1 - Publisher Copyright: © 2021, Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature.

PY - 2021/5/19

Y1 - 2021/5/19

N2 - 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).

AB - 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).

KW - annealing treatment

KW - mechanical properties

KW - microstructure

KW - selective laser melting

KW - Ti-6Al-4V

UR - http://www.scopus.com/inward/record.url?scp=85105981721&partnerID=8YFLogxK

U2 - 10.1007/s11771-021-4680-3

DO - 10.1007/s11771-021-4680-3

M3 - Article

AN - SCOPUS:85105981721

VL - 28.2021

SP - 1068

EP - 1077

JO - Journal of Central South University = Zhongnan-Daxue-xuebao : yingwen-ban

JF - Journal of Central South University = Zhongnan-Daxue-xuebao : yingwen-ban

SN - 2095-2899

IS - 4

ER -