Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser Melting
Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb (TA32) titanium alloy is a kind of near α high temperature titanium alloy with great application prospects in aero-engine afterburners and cruise missiles. However, there are still few studies on the microstructure and mechanical properties of TA32 specimens produced by...
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MDPI AG
2020-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/23/5527 |
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| author | Jiangtao Ran Xiaojing Sun Shiliang Wei Zhuo Chen Hong Zhao |
| author_facet | Jiangtao Ran Xiaojing Sun Shiliang Wei Zhuo Chen Hong Zhao |
| author_sort | Jiangtao Ran |
| collection | DOAJ |
| description | Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb (TA32) titanium alloy is a kind of near α high temperature titanium alloy with great application prospects in aero-engine afterburners and cruise missiles. However, there are still few studies on the microstructure and mechanical properties of TA32 specimens produced by selective laser melting (SLM) technology. In this study, TA32 specimens with high strength (tensile strength of 1267 MPa) and moderate ductility (elongation after fracture of 8%) were obtained by selective laser melting. The effect of laser power on the microstructure and mechanical behavior was studied and the results demonstrated that the average grain size increases with increasing laser power from 200 W to 400 W. Micro-zone composition analysis was carried out by energy dispersion spectrum (EDS), showing that the Al concentration inner grains is higher than that near grain boundaries. Fracture analysis results demonstrated that the fracture mode of SLM TA32 specimens was cleavage fracture. The tensile strength of the specimens built with a laser power of 250 W at 500 °C, 550 °C and 600 °C was measured as 869 MPa, 819 MPa and 712 MPa, respectively. |
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| id | doaj.art-2bf94f4a51a5499db95b76217d8fbf89 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T14:20:12Z |
| publishDate | 2020-12-01 |
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| spelling | doaj.art-2bf94f4a51a5499db95b76217d8fbf892023-11-20T23:24:37ZengMDPI AGMaterials1996-19442020-12-011323552710.3390/ma13235527Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser MeltingJiangtao Ran0Xiaojing Sun1Shiliang Wei2Zhuo Chen3Hong Zhao4College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, ChinaMechanical &Power Engineering College, Harbin University of Science and Technology, Harbin 150001, ChinaAerospace Hiwing (Harbin) Titanium Industry Co., Ltd., Harbin 150001, ChinaCollege of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, ChinaTi-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb (TA32) titanium alloy is a kind of near α high temperature titanium alloy with great application prospects in aero-engine afterburners and cruise missiles. However, there are still few studies on the microstructure and mechanical properties of TA32 specimens produced by selective laser melting (SLM) technology. In this study, TA32 specimens with high strength (tensile strength of 1267 MPa) and moderate ductility (elongation after fracture of 8%) were obtained by selective laser melting. The effect of laser power on the microstructure and mechanical behavior was studied and the results demonstrated that the average grain size increases with increasing laser power from 200 W to 400 W. Micro-zone composition analysis was carried out by energy dispersion spectrum (EDS), showing that the Al concentration inner grains is higher than that near grain boundaries. Fracture analysis results demonstrated that the fracture mode of SLM TA32 specimens was cleavage fracture. The tensile strength of the specimens built with a laser power of 250 W at 500 °C, 550 °C and 600 °C was measured as 869 MPa, 819 MPa and 712 MPa, respectively.https://www.mdpi.com/1996-1944/13/23/5527selective laser meltingTA32 titanium alloymicrostructuremicro-zone composition analysismechanical properties |
| spellingShingle | Jiangtao Ran Xiaojing Sun Shiliang Wei Zhuo Chen Hong Zhao Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser Melting Materials selective laser melting TA32 titanium alloy microstructure micro-zone composition analysis mechanical properties |
| title | Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser Melting |
| title_full | Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser Melting |
| title_fullStr | Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser Melting |
| title_full_unstemmed | Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser Melting |
| title_short | Achieving Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nb Alloys with High Strength and Moderate Ductility through Selective Laser Melting |
| title_sort | achieving ti 5al 4sn 2zr 1mo 0 25si 1nb alloys with high strength and moderate ductility through selective laser melting |
| topic | selective laser melting TA32 titanium alloy microstructure micro-zone composition analysis mechanical properties |
| url | https://www.mdpi.com/1996-1944/13/23/5527 |
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