Journal article

Non-layer-wise fracture and deformation mechanism in beta titanium cubic lattice structure manufactured by selective laser melting

YJ Liu, JS Zhang, XC Liu, X Wu, JC Wang, YS Zhang, LQ Wang, LC Zhang

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | ELSEVIER SCIENCE SA | Published : 2021

Abstract

The layer-wise fracture is a common fracture in porous metal structures, where the whole layer with stress concentration fractures firstly, and then the adjacent layers fracture sequentially. The brittle layer-wise fracture has always been a major obstacle that restricts the development of metallic porous structures, which may induce catastrophic failure under occasional overloading. This work reports that the non-layer-wise fracture was achieved in a beta-type Ti–25Nb–3Zr–3Mo–2Sn (TLM) titanium alloy with 50% porosity cubic lattice structure manufactured by selective laser melting (SLM), mainly due to the stress-induced progressive martensitic transformation (β→α″) supplemented by deformati..

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University of Melbourne Researchers

Grants

Awarded by National Natural Science Foundation of China


Awarded by US (United States) Department of Energy, Office of Science and Office of Basic Energy Science


Funding Acknowledgements

This work was supported in part by National Natural Science Foundation of China (No. 52001030, No. 51803200 and 52003104). The use of the Advanced Photon Source at Argonne National Laboratory was supported by the US (United States) Department of Energy, Office of Science and Office of Basic Energy Science, under Contract No. DE-AC02-06CH11357.