Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V composites
In order to fabricate in-situ synthetic (TiB + TiC)/Ti-6Al-4V composites, we conducted arc-smelting in the atmosphere of hydrogen and argon gaseous mixture using a melting casting method of melt hydrogenation technology. Some experimental parameters such as arc current, voltage, gas partial pressure...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420304452 |
| _version_ | 1818564025422708736 |
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| author | Liang Wang Luobin Zhang LiangShun Luo Binbin Wang Hui Yan RuiRun Chen YanQing Su JingJie Guo HengZhi Fu |
| author_facet | Liang Wang Luobin Zhang LiangShun Luo Binbin Wang Hui Yan RuiRun Chen YanQing Su JingJie Guo HengZhi Fu |
| author_sort | Liang Wang |
| collection | DOAJ |
| description | In order to fabricate in-situ synthetic (TiB + TiC)/Ti-6Al-4V composites, we conducted arc-smelting in the atmosphere of hydrogen and argon gaseous mixture using a melting casting method of melt hydrogenation technology. Some experimental parameters such as arc current, voltage, gas partial pressure and smelting time were precisely controlled. The molar ratio of the ceramic phase is 1:1 at a total integral of 5%. The microstructure evolution, tensile properties and fracture mechanism of the composite at room temperature are revealed and discussed.The results of the tensile test demonstrate that melt hydrogenation technology remarkably improves the ultimate strength of (TiB + TiC)/Ti-6Al-4V composites accompanied by slight increase of elongation, in which the 5 vol% (TiB + TiC)/Ti-6Al-4V increased by 15.19% from 901.42 MPa to 1038.42 MPa with elongation increasing from 0.47% to 0.78%, compared with that of the unhydrogenated composites. The improvement in the strength of the composite can be attributed to the refinement in matrix α layer and the increasement of the aspect ratio of TiB whiskers. The use of melt hydrogenation technology is found to change the trend of segregation of ceramic phase to primary β phase at grain boundaries into random dispersion distribution. |
| first_indexed | 2024-12-14T01:23:59Z |
| format | Article |
| id | doaj.art-33822de063af4da880bd6f52ae52cf8e |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-14T01:23:59Z |
| publishDate | 2020-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-33822de063af4da880bd6f52ae52cf8e2022-12-21T23:22:16ZengElsevierJournal of Materials Research and Technology2238-78542020-05-019363436351Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V compositesLiang Wang0Luobin Zhang1LiangShun Luo2Binbin Wang3Hui Yan4RuiRun Chen5YanQing Su6JingJie Guo7HengZhi Fu8Corresponding author.; National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaIn order to fabricate in-situ synthetic (TiB + TiC)/Ti-6Al-4V composites, we conducted arc-smelting in the atmosphere of hydrogen and argon gaseous mixture using a melting casting method of melt hydrogenation technology. Some experimental parameters such as arc current, voltage, gas partial pressure and smelting time were precisely controlled. The molar ratio of the ceramic phase is 1:1 at a total integral of 5%. The microstructure evolution, tensile properties and fracture mechanism of the composite at room temperature are revealed and discussed.The results of the tensile test demonstrate that melt hydrogenation technology remarkably improves the ultimate strength of (TiB + TiC)/Ti-6Al-4V composites accompanied by slight increase of elongation, in which the 5 vol% (TiB + TiC)/Ti-6Al-4V increased by 15.19% from 901.42 MPa to 1038.42 MPa with elongation increasing from 0.47% to 0.78%, compared with that of the unhydrogenated composites. The improvement in the strength of the composite can be attributed to the refinement in matrix α layer and the increasement of the aspect ratio of TiB whiskers. The use of melt hydrogenation technology is found to change the trend of segregation of ceramic phase to primary β phase at grain boundaries into random dispersion distribution.http://www.sciencedirect.com/science/article/pii/S2238785420304452Melt hydrogenation technologyTitanium matrix compositesTensile propertiesMicrostructure evolution |
| spellingShingle | Liang Wang Luobin Zhang LiangShun Luo Binbin Wang Hui Yan RuiRun Chen YanQing Su JingJie Guo HengZhi Fu Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V composites Journal of Materials Research and Technology Melt hydrogenation technology Titanium matrix composites Tensile properties Microstructure evolution |
| title | Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V composites |
| title_full | Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V composites |
| title_fullStr | Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V composites |
| title_full_unstemmed | Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V composites |
| title_short | Effect of melt hydrogenation on microstructure evolution and tensile properties of (TiB + TiC)/Ti-6Al-4V composites |
| title_sort | effect of melt hydrogenation on microstructure evolution and tensile properties of tib tic ti 6al 4v composites |
| topic | Melt hydrogenation technology Titanium matrix composites Tensile properties Microstructure evolution |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420304452 |
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