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dc.contributor.author Sibisi, PN
dc.contributor.author Popoola, API
dc.contributor.author Arthur, Nana KK
dc.contributor.author Kubjane, SM
dc.contributor.author Ngoveni, AS
dc.contributor.author Kanyane, LR
dc.date.accessioned 2019-05-14T08:20:01Z
dc.date.available 2019-05-14T08:20:01Z
dc.date.issued 2018-11
dc.identifier.citation Sibisi, P.N. et al. 2018. Evaluation of hatch distance and powder feed rate effects in TI-6AL-4V alloy developed by LMD technique. The 19th Annual International RAPDASA Conference, Johannesburg, South Africa, 6-9 November 2018 en_US
dc.identifier.isbn 978-0-620-80987-0
dc.identifier.uri https://site.rapdasa.org/wp-content/uploads/2019/03/RAPDASA-2018-Conference-Proceedings-eBook_small.pdf
dc.identifier.uri http://hdl.handle.net/10204/10994
dc.description Paper presented at the 19th Annual International RAPDASA Conference, Johannesburg, South Africa, 6-9 November 2018 en_US
dc.description.abstract Laser metal deposition provides various benefits over traditional manufacturing, and has since become the research hotspot, as demand for advanced manufacturing persists. The effects of process parameter variation on structural integrity and dimensional accuracy of Ti-6Al-4V alloy fabricated through laser metal deposition was investigated. The laser power, scan speed and gas feed rate were kept constant while overlap distance was varied between 0,3375 and 1,0125mm, and the powder feed rate was varied between 1,6 and 3,8g/min. The density of samples was studied by Archimedes method using ethanol as a wetting liquid, and dimensions were evaluated using a digital Vernier calliper. The microstructure and morphology were examined by an optical microscope (OM). The microhardness and densification of specimen were evaluated using Vickers microhardness tester and Archimedes method, respectively. The results revealed an increase in density with an increase in overlap spacing, and the opposite effect was observed for increasing powder flowrate, whereby an increase in powder flowrate was found to decrease density. The evolution of large pores was favoured by higher powder feed rate at constant overlap spaces. In addition, the microhardness of all samples was found to exceed the conventionally fabricated Ti-6Al-4V alloy. en_US
dc.language.iso en en_US
dc.publisher RAPDASA en_US
dc.relation.ispartofseries Worklist;22330
dc.subject Laser metal deposition en_US
dc.subject Overlap spacing en_US
dc.subject Powder feed-rate en_US
dc.subject Structural integrity en_US
dc.subject Geometric accuracy en_US
dc.title Evaluation of hatch distance and powder feed rate effects in TI-6AL-4V alloy developed by LMD technique en_US
dc.type Presentation en_US


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