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The effect of SLM process parameters on density, hardness, tensile strength and surface quality of Ti-6Al-4V
journal contribution
posted on 2019-01-01, 00:00 authored by AmirMahyar KhorasaniAmirMahyar Khorasani, Ian GibsonIan Gibson, Umar Shafique AwanUmar Shafique Awan, Alireza GhaderiIn this paper, we printed Ti-6Al-4V SLM parts based on Taguchi design of experiment and related standards to measure and compare hardness with different mechanical properties that were obtained in our previous research such as density, strength, elongation, and average surface. Then the effect of process parameters comprising laser power, scan speed, hatch space, laser pattern angle coupling, along with heat treatment as a post-process, in relation to hardness was analysed. The relation of measured factors with each other was also studied and related mechanisms were discussed in depth. The original contribution in this paper is in producing a large and precise dataset and the comparison with mechanical properties. Another contribution is related to the analysis of process parameters in relation to hardness and explaining them by rheological phenomena. The results showed an interesting similarity between hardness and density which is highly related to the formation of the melting pool and porosities within the process.
History
Journal
Additive manufacturingVolume
25Pagination
176 - 186Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
2214-8604Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2018, Elsevier B.V.Usage metrics
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