Influence of microstructure on fracture feature of Ti6Al4V alloy prepared by 3D printing

In this work, the Ti6Al4V specimens produced by selective laser melting were mechanically tested in non-heat treated condition and fracture surface features were compared with this one of the material prepared using conventional casting and forging. The results of the fractography observation for bo...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-01, Vol.726 (1), p.12020
Main Authors: Losertová, M, Kubeš, V, Drápala, J, Dostálová, K, Sevostyanov, M A, Di Cocco, V, Iacoviello, F
Format: Article
Language:English
Subjects:
Ductile fracture
Forging
Fracture surfaces
Heat treatment
Laser beam melting
Martensite
Microstructure
Rapid prototyping
Three dimensional printing
Titanium base alloys
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Summary:In this work, the Ti6Al4V specimens produced by selective laser melting were mechanically tested in non-heat treated condition and fracture surface features were compared with this one of the material prepared using conventional casting and forging. The results of the fractography observation for both types of the samples were explained on the base of the microstructure analysis. The fracture surface of selective laser melted specimens showed more brittle feature that was in relation with the microstructure composed almost fully of martensite as opposed to conventionally prepared alloy with bimodal (α + β) microstructure and more ductile character of fracture surfaces.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/726/1/012020