Transformation-induced plasticity and high strength in beta titanium alloy manufactured by selective laser melting

Authors/Creators

Y.J. Liu, Edith Cowan University
Y.S. Zhang
L.C. Zhang, Edith Cowan UniversityFollow

Abstract

This work reports simultaneous achievement of high strength and large tensile ductility in a beta titanium alloy manufactured by selective laser melting (SLM). The SLM-produced samples present a unique microstructure and great mechanical behavior due to fast cooling in SLM process. Simultaneous improvement in yield strength (∼592±21 MPa), ultimate tensile strength (716±14 MPa) and ductility (37±5%) of SLM-produced sample results from the combination of fine columnar grains and sub-grains, strong texture and the transformation-induced plasticity (TRIP) and “hard-wraps-soft” effects. The large amount of sub-grain boundaries and strong texture delay the initiation of martensitic transformation in the SLM-produced sample, thereby increasing its yield strength. © 2019

Document Type

Journal Article

Date of Publication

1-1-2019

Publication Title

Materialia

Publisher

Elsevier BV

School

School of Engineering

RAS ID

28487

Comments

Liu, Y. J., Zhang, Y. S., & Zhang, L. C. (2019). Transformation-induced plasticity and high strength in beta titanium alloy manufactured by selective laser melting. Materialia, 6. Available here

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