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A survey on mechanisms and critical parameters on solidification of selective laser melting during fabrication of Ti-6Al-4V prosthetic acetabular cup

Khorasani, Amir Mahyar, Gibson, Ian, Goldberg, Moshe and Littlefair, Guy 2016, A survey on mechanisms and critical parameters on solidification of selective laser melting during fabrication of Ti-6Al-4V prosthetic acetabular cup, Materials and design, vol. 103, pp. 348-355, doi: 10.1016/j.matdes.2016.04.074.

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Title A survey on mechanisms and critical parameters on solidification of selective laser melting during fabrication of Ti-6Al-4V prosthetic acetabular cup
Author(s) Khorasani, Amir Mahyar
Gibson, IanORCID iD for Gibson, Ian orcid.org/0000-0002-4149-9122
Goldberg, Moshe
Littlefair, Guy
Journal name Materials and design
Volume number 103
Start page 348
End page 355
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-08-05
ISSN 0264-1275
1873-4197
Keyword(s) acetabular shell
Gibbs free energy
selective laser melting
surface energy
solidification
thermal stress
Summary Additive Manufacturing (AM) includes a range of approaches that correlate with computer aided design (CAD) and manufacturing by fabrication via precise layers and is a promising method for the production of medical tools. In this study, different aspects and mechanisms of solidification for curved surfaces based on equilibrium at curved interfaces, Monge patch, interfacial and Gibbs energy will be discussed. Also, the effect of capillarity, geometry, substrate temperature, cooling rate and scanning parameters in the solidification of a prosthetic acetabular cup (PAC) using selective laser melting (SLM) is analysed. The contributions of this work are analysing solidification and effective factors in this process to produce parts with a higher quality and mechanical properties such as strength, strain, porosity, relative density and hardness. Results indicate that due to the surface to volume (S/V) ratio, and the increasing effect of the radius on Monge patch, thermal stresses and surface forces are more prevalent on outer surfaces. Moreover, solidification and mechanical properties are related to capillarity, geometry, substrate temperature, cooling rate, scanning power and speed. The results also indicate the interaction of solute diffusion and heat transfer with interatomic forces in large S/V ratio and at small scales tend to improve solidification.
Language eng
DOI 10.1016/j.matdes.2016.04.074
Field of Research 091207 Metals and Alloy Materials
091399 Mechanical Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30085561

Document type: Journal Article
Collection: School of Engineering
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