Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser melting
Titanium alloys fabricated through additive manufacturing have garnered widespread attention in biomedical field, with their excellent mechanical and corrosion resistance properties serving as the prerequisites for such applications. This study thus investigates the influence of selective laser melt...
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425007598 |
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| author | Xianzheng Lu Wei Zou Xiaojie Zhou Jian Zhang Xiaomin Chen Xiaotong Pang Wing Yuk Ip Chiping Lai Luenchow Chan Yi Wang |
| author_facet | Xianzheng Lu Wei Zou Xiaojie Zhou Jian Zhang Xiaomin Chen Xiaotong Pang Wing Yuk Ip Chiping Lai Luenchow Chan Yi Wang |
| author_sort | Xianzheng Lu |
| collection | DOAJ |
| description | Titanium alloys fabricated through additive manufacturing have garnered widespread attention in biomedical field, with their excellent mechanical and corrosion resistance properties serving as the prerequisites for such applications. This study thus investigates the influence of selective laser melting (SLM) process on the mechanical properties and corrosion resistance of Ti–6Al–4V (TC4) alloys. Results show that the microstructure of the prepared TC4 alloys is mainly composed of columnar β grains growing along the building direction and fine acicular α′ martensite within them. Alloy printed at low power (150 W) and high speed (1300 mm/s) exhibits weakened plasticity and corrosion resistance due to un-melted gaps and micro-void defects. Alloys prepared at medium power (200 W) show stable mechanical properties; however, their corrosion resistance fluctuates significantly with prolonged immersion time due to uneven formation rate and poor stability of the passivation film. Whereas, alloy printed at high power (250 W) and medium speed (1200 mm/s) demonstrates regularly grown columnar β grains and dispersed acicular α′ martensite, which endow it with optimal mechanical properties. Additionally, benefiting from the rapid formed passivation film, which is predominantly composed of dense and stable high-valent oxides (TiO2) on the outer layer, this alloy also exhibits the best corrosion resistance. This study indicates that TC4 alloy with excellent comprehensive properties can be achieved through SLM process regulation, making it a highly potential material for biomedical applications. |
| format | Article |
| id | doaj-art-e2e48758004b4f4a94cc80b97f2b8d99 |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-e2e48758004b4f4a94cc80b97f2b8d992025-08-20T02:49:22ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01361743175710.1016/j.jmrt.2025.03.249Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser meltingXianzheng Lu0Wei Zou1Xiaojie Zhou2Jian Zhang3Xiaomin Chen4Xiaotong Pang5Wing Yuk Ip6Chiping Lai7Luenchow Chan8Yi Wang9Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science and Technology, Changsha, 410114, China; Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region of ChinaHunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science and Technology, Changsha, 410114, ChinaHunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science and Technology, Changsha, 410114, China; Corresponding author.Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science and Technology, Changsha, 410114, ChinaHunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science and Technology, Changsha, 410114, ChinaHunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment, Changsha University of Science and Technology, Changsha, 410114, ChinaDepartment of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region of ChinaResearch Institute for Advanced Manufacturing, Department of Industrial and Systems Engineering, Hung Hom, Kowloon, Hong Kong Special Administrative Region of ChinaResearch Institute for Advanced Manufacturing, Department of Industrial and Systems Engineering, Hung Hom, Kowloon, Hong Kong Special Administrative Region of ChinaHunan Institute of Traffic Engineering, Hengyang, 421001, China; Corresponding author.Titanium alloys fabricated through additive manufacturing have garnered widespread attention in biomedical field, with their excellent mechanical and corrosion resistance properties serving as the prerequisites for such applications. This study thus investigates the influence of selective laser melting (SLM) process on the mechanical properties and corrosion resistance of Ti–6Al–4V (TC4) alloys. Results show that the microstructure of the prepared TC4 alloys is mainly composed of columnar β grains growing along the building direction and fine acicular α′ martensite within them. Alloy printed at low power (150 W) and high speed (1300 mm/s) exhibits weakened plasticity and corrosion resistance due to un-melted gaps and micro-void defects. Alloys prepared at medium power (200 W) show stable mechanical properties; however, their corrosion resistance fluctuates significantly with prolonged immersion time due to uneven formation rate and poor stability of the passivation film. Whereas, alloy printed at high power (250 W) and medium speed (1200 mm/s) demonstrates regularly grown columnar β grains and dispersed acicular α′ martensite, which endow it with optimal mechanical properties. Additionally, benefiting from the rapid formed passivation film, which is predominantly composed of dense and stable high-valent oxides (TiO2) on the outer layer, this alloy also exhibits the best corrosion resistance. This study indicates that TC4 alloy with excellent comprehensive properties can be achieved through SLM process regulation, making it a highly potential material for biomedical applications.http://www.sciencedirect.com/science/article/pii/S2238785425007598Ti–6Al–4V alloySelective laser meltingMechanical propertiesCorrosion resistanceElectrochemical behavior |
| spellingShingle | Xianzheng Lu Wei Zou Xiaojie Zhou Jian Zhang Xiaomin Chen Xiaotong Pang Wing Yuk Ip Chiping Lai Luenchow Chan Yi Wang Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser melting Journal of Materials Research and Technology Ti–6Al–4V alloy Selective laser melting Mechanical properties Corrosion resistance Electrochemical behavior |
| title | Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser melting |
| title_full | Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser melting |
| title_fullStr | Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser melting |
| title_full_unstemmed | Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser melting |
| title_short | Effect of process parameters on mechanical properties and corrosion resistance of Ti–6Al–4V alloys prepared by selective laser melting |
| title_sort | effect of process parameters on mechanical properties and corrosion resistance of ti 6al 4v alloys prepared by selective laser melting |
| topic | Ti–6Al–4V alloy Selective laser melting Mechanical properties Corrosion resistance Electrochemical behavior |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425007598 |
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