Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4V
This study presents the investigation on how heat treatment parameters, which are temperature, cooling method, and residence time, influence the microstructural and hardness properties of Ti6Al4V components produced on Ti6Al4V substrate using high speed selective laser melting technique. Heat treatm...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/2/255 |
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| author | Paul Lekoadi Monnamme Tlotleng Kofi Annan Nthabiseng Maledi Bathusile Masina |
| author_facet | Paul Lekoadi Monnamme Tlotleng Kofi Annan Nthabiseng Maledi Bathusile Masina |
| author_sort | Paul Lekoadi |
| collection | DOAJ |
| description | This study presents the investigation on how heat treatment parameters, which are temperature, cooling method, and residence time, influence the microstructural and hardness properties of Ti6Al4V components produced on Ti6Al4V substrate using high speed selective laser melting technique. Heat treatment was performed on the produced samples before they were characterized for microstructure and hardness. The microstructure of the as-built sample contained large columnar β-grains that were filled with martensite α’ phase and had a high hardness of 383 ± 13 HV. At 1000 °C and residence time of maximum 4 h, better heat treatment parameters were seen for the selective laser melting (SLM) produced Ti6Al4V sample since an improved lamellar α + β microstructure was obtained at this condition. This microstructure is known to have improved tensile properties. |
| first_indexed | 2024-03-09T05:59:03Z |
| format | Article |
| id | doaj.art-4e3daa95460b4a9fbf27d58af6812b28 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T05:59:03Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-4e3daa95460b4a9fbf27d58af6812b282023-12-03T12:10:49ZengMDPI AGMetals2075-47012021-02-0111225510.3390/met11020255Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4VPaul Lekoadi0Monnamme Tlotleng1Kofi Annan2Nthabiseng Maledi3Bathusile Masina4Council for Scientific Industrial Research (CSIR), Manufacturing, National Laser Centre, Laser Enabled Manufacturing Group, P.O. Box 395, Pretoria 0001, South AfricaCouncil for Scientific Industrial Research (CSIR), Manufacturing, National Laser Centre, Laser Enabled Manufacturing Group, P.O. Box 395, Pretoria 0001, South AfricaDepartment of Material Science and Metallurgical Engineering, University of Pretoria, Mineral Science Building, Pretoria 0001, South AfricaSchool of Chemical and Metallurgical Engineering, University of Witwatersrand, Private Bag 3, Wits, Johannesburg 2050, South AfricaCouncil for Scientific Industrial Research (CSIR), Manufacturing, National Laser Centre, Laser Enabled Manufacturing Group, P.O. Box 395, Pretoria 0001, South AfricaThis study presents the investigation on how heat treatment parameters, which are temperature, cooling method, and residence time, influence the microstructural and hardness properties of Ti6Al4V components produced on Ti6Al4V substrate using high speed selective laser melting technique. Heat treatment was performed on the produced samples before they were characterized for microstructure and hardness. The microstructure of the as-built sample contained large columnar β-grains that were filled with martensite α’ phase and had a high hardness of 383 ± 13 HV. At 1000 °C and residence time of maximum 4 h, better heat treatment parameters were seen for the selective laser melting (SLM) produced Ti6Al4V sample since an improved lamellar α + β microstructure was obtained at this condition. This microstructure is known to have improved tensile properties.https://www.mdpi.com/2075-4701/11/2/255selective laser meltingheat treatmenttemperaturecooling methodresidence timemicrostructure |
| spellingShingle | Paul Lekoadi Monnamme Tlotleng Kofi Annan Nthabiseng Maledi Bathusile Masina Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4V Metals selective laser melting heat treatment temperature cooling method residence time microstructure |
| title | Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4V |
| title_full | Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4V |
| title_fullStr | Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4V |
| title_full_unstemmed | Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4V |
| title_short | Evaluation of Heat Treatment Parameters on Microstructure and Hardness Properties of High-Speed Selective Laser Melted Ti6Al4V |
| title_sort | evaluation of heat treatment parameters on microstructure and hardness properties of high speed selective laser melted ti6al4v |
| topic | selective laser melting heat treatment temperature cooling method residence time microstructure |
| url | https://www.mdpi.com/2075-4701/11/2/255 |
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