Trace Carbon Addition to Refine Microstructure and Enhance Properties of Additive-Manufactured Ti-6Al-4V

S Mereddy; M J Bermingham; Damon Kent; A Dehghan-Manshadi; D H StJohn; M S Dargusch

doi:10.1007/s11837-018-2994-x

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Trace Carbon Addition to Refine Microstructure and Enhance Properties of Additive-Manufactured Ti-6Al-4V

Journal article

Peer reviewed

Trace Carbon Addition to Refine Microstructure and Enhance Properties of Additive-Manufactured Ti-6Al-4V

S Mereddy, M J Bermingham, Damon Kent, A Dehghan-Manshadi, D H StJohn and M S Dargusch

JOM, Vol.70(9), pp.1670-1676

2018

DOI: https://doi.org/10.1007/s11837-018-2994-x

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Abstract

Carbon is a powerful alloying element for titanium alloys. In this work, trace carbon is alloyed with Ti-6Al-4V during wire + arc additive manufacturing, and the effects on the solidification process, microstructure and mechanical properties are explored. With between 0.03 wt.% and 0.41 wt.% carbon, the prior-β grain size and α-lath length reduce by factors of 5-6 which is attributed to separate grain refining mechanisms. Alloying Ti-6Al-4V with up to 0.1 wt.% carbon improved both the tensile strength and ductility, but higher carbon additions were associated with excessive carbide formation and severe embrittlement.

Details

Title: Trace Carbon Addition to Refine Microstructure and Enhance Properties of Additive-Manufactured Ti-6Al-4V
Authors: S Mereddy (Author) - University of Queensland
M J Bermingham (Author) - University of Queensland
Damon Kent (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
A Dehghan-Manshadi (Author) - University of Queensland
D H StJohn (Author) - University of Queensland
M S Dargusch (Author) - University of Queensland
Publication details: JOM, Vol.70(9), pp.1670-1676
Publisher: Springer New York LLC
Date published: 2018
DOI: 10.1007/s11837-018-2994-x
ISSN: 1047-4838
Grants: ARC Research Hub for Advanced Manufacturing of Medical Devices, IH150100024, Australian Research Council (Australia, Canberra) - ARC
Grant note: DE160100260 / Australian Research Council.
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99451235202621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing

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