dc.contributor.author |
Molatlhegi, G
|
|
dc.contributor.author |
Hoosain, Shaik
|
|
dc.contributor.author |
Popoola, API
|
|
dc.contributor.author |
Malatji, N
|
|
dc.contributor.author |
Pityana, Sisa L
|
|
dc.date.accessioned |
2022-03-22T07:50:12Z |
|
dc.date.available |
2022-03-22T07:50:12Z |
|
dc.date.issued |
2021-10 |
|
dc.identifier.citation |
Molatlhegi, G., Hoosain, S., Popoola, A., Malatji, N. & Pityana, S.L. 2021. The effect of laser surface re-melting on the surface roughness and micro-hardness of selective laser melting (SLM) fabricated Ti-6Al-4V samples. <i>South African Journal for Science and Technology / Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 40(1).</i> http://hdl.handle.net/10204/12338 |
en_ZA |
dc.identifier.issn |
0254-3486 |
|
dc.identifier.issn |
2222-4173 |
|
dc.identifier.uri |
http://hdl.handle.net/10204/12338
|
|
dc.description.abstract |
Ti-6Al-4V is favourable due to its exquisite properties for example, low modulus, light weight, excellent strength, and corrosion resistance. Despite the excellent properties of the material, the fabrication process of titanium components is challenging due to the poor final surface quality components caused by non-uniform powder distribution during additive manufacturing (AM) using selective laser melting (SLM) process. SLM process produces fully denser parts with better mechanical properties compared to the bulk materials, although the surface quality is poor. This work aims to study the effect of laser surface re-melting (LSM) on the hardness and surface properties of Ti-6Al-4V alloy. The fabricated Ti-6Al-4V sheet was re-melted by a 3 kW IPG Fiber laser. Microstructural evaluations of the Ti-6Al-4V sheet were characterized using an optical microscope. Micro-hardness and surface roughness measurements were determined by means of an HV Vickers tester under an applied load of 300g and load time of 10s and MarSurf PS1 roughness tester machine respectively. Microstructural evolution and hardness properties were all examined before and after the LSM treatment. The experimental results showed the formation of martensitic structure on the areas treated. Micro-hardness depth profiling results showed an average increase of 15–25% which was higher compared to the average hardness of the as-received. The results indicated that the roughness measurements lowered when both the residence time and irradiance increase. Laser surface re-melting treatment showed an improvement of the microstructural modifications and hardness properties therefore, the process can be used to modify the component’s surface for reliable and best surface finish. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
http://www.satnt.ac.za/index.php/satnt/article/view/902 |
en_US |
dc.relation.uri |
https://cosaami.co.za/wp-content/uploads/2021/10/2021-CoSAAMI-Proceedings.pdf |
en_US |
dc.relation.uri |
http://www.satnt.ac.za/index.php/satnt/article/view/902 |
en_US |
dc.source |
South African Journal for Science and Technology / Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 40(1) |
en_US |
dc.subject |
Ti-6Al-4V |
en_US |
dc.subject |
Selective laser melting |
en_US |
dc.subject |
SLM |
en_US |
dc.subject |
Laser Re-melting |
en_US |
dc.subject |
Micro-hardness |
en_US |
dc.title |
The effect of laser surface re-melting on the surface roughness and micro-hardness of selective laser melting (SLM) fabricated Ti-6Al-4V samples |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
186-189 |
en_US |
dc.description.note |
Article published in South African Journal for Science and Technology, vol. 40(1): 186-189 |
en_US |
dc.description.cluster |
Manufacturing |
en_US |
dc.description.impactarea |
Laser Enabled Manufacturing |
en_US |
dc.identifier.apacitation |
Molatlhegi, G., Hoosain, S., Popoola, A., Malatji, N., & Pityana, S. L. (2021). The effect of laser surface re-melting on the surface roughness and micro-hardness of selective laser melting (SLM) fabricated Ti-6Al-4V samples. <i>South African Journal for Science and Technology / Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 40(1)</i>, http://hdl.handle.net/10204/12338 |
en_ZA |
dc.identifier.chicagocitation |
Molatlhegi, G, Shaik Hoosain, API Popoola, N Malatji, and Sisa L Pityana "The effect of laser surface re-melting on the surface roughness and micro-hardness of selective laser melting (SLM) fabricated Ti-6Al-4V samples." <i>South African Journal for Science and Technology / Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 40(1)</i> (2021) http://hdl.handle.net/10204/12338 |
en_ZA |
dc.identifier.vancouvercitation |
Molatlhegi G, Hoosain S, Popoola A, Malatji N, Pityana SL. The effect of laser surface re-melting on the surface roughness and micro-hardness of selective laser melting (SLM) fabricated Ti-6Al-4V samples. South African Journal for Science and Technology / Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 40(1). 2021; http://hdl.handle.net/10204/12338. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Molatlhegi, G
AU - Hoosain, Shaik
AU - Popoola, API
AU - Malatji, N
AU - Pityana, Sisa L
AB - Ti-6Al-4V is favourable due to its exquisite properties for example, low modulus, light weight, excellent strength, and corrosion resistance. Despite the excellent properties of the material, the fabrication process of titanium components is challenging due to the poor final surface quality components caused by non-uniform powder distribution during additive manufacturing (AM) using selective laser melting (SLM) process. SLM process produces fully denser parts with better mechanical properties compared to the bulk materials, although the surface quality is poor. This work aims to study the effect of laser surface re-melting (LSM) on the hardness and surface properties of Ti-6Al-4V alloy. The fabricated Ti-6Al-4V sheet was re-melted by a 3 kW IPG Fiber laser. Microstructural evaluations of the Ti-6Al-4V sheet were characterized using an optical microscope. Micro-hardness and surface roughness measurements were determined by means of an HV Vickers tester under an applied load of 300g and load time of 10s and MarSurf PS1 roughness tester machine respectively. Microstructural evolution and hardness properties were all examined before and after the LSM treatment. The experimental results showed the formation of martensitic structure on the areas treated. Micro-hardness depth profiling results showed an average increase of 15–25% which was higher compared to the average hardness of the as-received. The results indicated that the roughness measurements lowered when both the residence time and irradiance increase. Laser surface re-melting treatment showed an improvement of the microstructural modifications and hardness properties therefore, the process can be used to modify the component’s surface for reliable and best surface finish.
DA - 2021-10
DB - ResearchSpace
DP - CSIR
J1 - South African Journal for Science and Technology / Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 40(1)
KW - Ti-6Al-4V
KW - Selective laser melting
KW - SLM
KW - Laser Re-melting
KW - Micro-hardness
LK - https://researchspace.csir.co.za
PY - 2021
SM - 0254-3486
SM - 2222-4173
T1 - The effect of laser surface re-melting on the surface roughness and micro-hardness of selective laser melting (SLM) fabricated Ti-6Al-4V samples
TI - The effect of laser surface re-melting on the surface roughness and micro-hardness of selective laser melting (SLM) fabricated Ti-6Al-4V samples
UR - http://hdl.handle.net/10204/12338
ER -
|
en_ZA |
dc.identifier.worklist |
25507 |
en_US |