dc.contributor.author |
Motha, S
|
|
dc.contributor.author |
Lekoadi, Paul
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|
dc.contributor.author |
Raji, SA
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|
dc.contributor.author |
Skhosane, Basebakhe S
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|
dc.contributor.author |
Pityana, Sisa L
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|
dc.contributor.author |
Tlotleng, Monnamme
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|
dc.date.accessioned |
2023-04-06T12:13:40Z |
|
dc.date.available |
2023-04-06T12:13:40Z |
|
dc.date.issued |
2022-06 |
|
dc.identifier.citation |
Motha, S., Lekoadi, P., Raji, S., Skhosane, B.S., Pityana, S.L. & Tlotleng, M. 2022. Laser micro in situ alloying of c-Ti46.8Al1Cr0.2Si with Manganese. <i>Materials Today: Proceedings,62, Supplement 1.</i> http://hdl.handle.net/10204/12725 |
en_ZA |
dc.identifier.issn |
2214-7853 |
|
dc.identifier.uri |
https://doi.org/10.1016/j.matpr.2022.05.077
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/12725
|
|
dc.description.abstract |
Titanium alloys have two primary phases (a + ß) that are attributed to the a-stabiliser (aluminium) and ß-stabiliser (niobium). The latter stabilisers shift a-phase to higher temperature while the former stabilisers shift the ß-phase to lower temperatures. To extend their scope of application, (a + ß)-phase titanium alloys can be micro-alloyed with ß-eutetic elements (Mn, Cr, Si, Co etc) to form intermetallic compounds which are typically referred to as titanium aluminides (Ti-Al). Several intermetallic alloys can be formed in the Ti-Al phase diagram but only (a2)-Ti3Al and ( )-TiAl are stable and of relevance to structural engineering since they can be used in industries spanning across energy, aerospace and tissue-engineering. In this study, a castable -Ti46.8Al1Cr0.2Si pre-alloyed powder, was micro-alloyed with Mn in order to examine if it can improve its tensile properties. When 1–2 at. % Mn is added to Ti-Al alloys, it is able to increase ductility, reduce oxidation resistance and shift the (a2 + )/ to the titanium side and decrease the Al content in the -phase. To effectively ascertain these effects Mn feed rates were varied from 0.2 to 1.0 rpm during the micro-alloying of -Ti46.8Al1Cr0.2Si through in-situ laser deposition to form -Ti46.8Al1Cr0.2Si-(xMn). The produced clads were characterised for chemistry and microstructure using scanning electron microscope. Results concluded that Al content decrease with an increase in Mn from 56 at. % to 49 at. %. Mn of 10.16 g/min had similar properties to the non-Mn alloyed sample. Moreover, it was shown in this work that laser processing decreased the tensile and yield strength of the alloy when compared to the as-cast in previous studies, and that 2.69 g/min and 10.16 g/min are lower and upper Mn values when ductility of the master alloy is to be improved. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://www.sciencedirect.com/science/article/pii/S2214785322033582?via%3Dihub |
en_US |
dc.source |
Materials Today: Proceedings,62, Supplement 1 |
en_US |
dc.subject |
Additive manufacturing |
en_US |
dc.subject |
Aluminium |
en_US |
dc.subject |
(a2)-Ti3Al |
en_US |
dc.subject |
(c)-TiAl |
en_US |
dc.subject |
(a2+c) - duplex microstructure |
en_US |
dc.subject |
Laser In Situ Alloying |
en_US |
dc.subject |
Manganese |
en_US |
dc.title |
Laser micro in situ alloying of c-Ti46.8Al1Cr0.2Si with Manganese |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
167-183 |
en_US |
dc.description.note |
Copyright: 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Selection and peer-review under responsibility of the scientific committee of the International Symposium on Nanostructured and Advanced Materials. |
en_US |
dc.description.cluster |
Manufacturing |
en_US |
dc.description.impactarea |
Laser Enabled Manufacturing |
en_US |
dc.identifier.apacitation |
Motha, S., Lekoadi, P., Raji, S., Skhosane, B. S., Pityana, S. L., & Tlotleng, M. (2022). Laser micro in situ alloying of c-Ti46.8Al1Cr0.2Si with Manganese. <i>Materials Today: Proceedings,62, Supplement 1</i>, http://hdl.handle.net/10204/12725 |
en_ZA |
dc.identifier.chicagocitation |
Motha, S, Paul Lekoadi, SA Raji, Basebakhe S Skhosane, Sisa L Pityana, and Monnamme Tlotleng "Laser micro in situ alloying of c-Ti46.8Al1Cr0.2Si with Manganese." <i>Materials Today: Proceedings,62, Supplement 1</i> (2022) http://hdl.handle.net/10204/12725 |
en_ZA |
dc.identifier.vancouvercitation |
Motha S, Lekoadi P, Raji S, Skhosane BS, Pityana SL, Tlotleng M. Laser micro in situ alloying of c-Ti46.8Al1Cr0.2Si with Manganese. Materials Today: Proceedings,62, Supplement 1. 2022; http://hdl.handle.net/10204/12725. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Motha, S
AU - Lekoadi, Paul
AU - Raji, SA
AU - Skhosane, Basebakhe S
AU - Pityana, Sisa L
AU - Tlotleng, Monnamme
AB - Titanium alloys have two primary phases (a + ß) that are attributed to the a-stabiliser (aluminium) and ß-stabiliser (niobium). The latter stabilisers shift a-phase to higher temperature while the former stabilisers shift the ß-phase to lower temperatures. To extend their scope of application, (a + ß)-phase titanium alloys can be micro-alloyed with ß-eutetic elements (Mn, Cr, Si, Co etc) to form intermetallic compounds which are typically referred to as titanium aluminides (Ti-Al). Several intermetallic alloys can be formed in the Ti-Al phase diagram but only (a2)-Ti3Al and ( )-TiAl are stable and of relevance to structural engineering since they can be used in industries spanning across energy, aerospace and tissue-engineering. In this study, a castable -Ti46.8Al1Cr0.2Si pre-alloyed powder, was micro-alloyed with Mn in order to examine if it can improve its tensile properties. When 1–2 at. % Mn is added to Ti-Al alloys, it is able to increase ductility, reduce oxidation resistance and shift the (a2 + )/ to the titanium side and decrease the Al content in the -phase. To effectively ascertain these effects Mn feed rates were varied from 0.2 to 1.0 rpm during the micro-alloying of -Ti46.8Al1Cr0.2Si through in-situ laser deposition to form -Ti46.8Al1Cr0.2Si-(xMn). The produced clads were characterised for chemistry and microstructure using scanning electron microscope. Results concluded that Al content decrease with an increase in Mn from 56 at. % to 49 at. %. Mn of 10.16 g/min had similar properties to the non-Mn alloyed sample. Moreover, it was shown in this work that laser processing decreased the tensile and yield strength of the alloy when compared to the as-cast in previous studies, and that 2.69 g/min and 10.16 g/min are lower and upper Mn values when ductility of the master alloy is to be improved.
DA - 2022-06
DB - ResearchSpace
DP - CSIR
J1 - Materials Today: Proceedings,62, Supplement 1
KW - Additive manufacturing
KW - Aluminium
KW - (a2)-Ti3Al
KW - (c)-TiAl
KW - (a2+c) - duplex microstructure
KW - Laser In Situ Alloying
KW - Manganese
LK - https://researchspace.csir.co.za
PY - 2022
SM - 2214-7853
T1 - Laser micro in situ alloying of c-Ti46.8Al1Cr0.2Si with Manganese
TI - Laser micro in situ alloying of c-Ti46.8Al1Cr0.2Si with Manganese
UR - http://hdl.handle.net/10204/12725
ER -
|
en_ZA |
dc.identifier.worklist |
26251 |
en_US |