Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture
In the present work, Ti2AlC/TiAl composites with network architecture were fabricated by the method of spark plasma sintering (SPS) at different temperature using Ti–48Al–2Cr–2Nb pre-alloyed powders and graphene nanosheets (GNSs) as raw materials. The effect of sintering temperature on the multi-sca...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423016198 |
| _version_ | 1797745179965259776 |
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| author | Zhenbo Wang Pei Liu Aiqin Wang Jingpei Xie Bo Hou |
| author_facet | Zhenbo Wang Pei Liu Aiqin Wang Jingpei Xie Bo Hou |
| author_sort | Zhenbo Wang |
| collection | DOAJ |
| description | In the present work, Ti2AlC/TiAl composites with network architecture were fabricated by the method of spark plasma sintering (SPS) at different temperature using Ti–48Al–2Cr–2Nb pre-alloyed powders and graphene nanosheets (GNSs) as raw materials. The effect of sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture was investigated. The results showed that equiaxed γ-TiAl matrix composite reinforced with the continuous network structured micro-Ti2AlC phases could be in-situ fabricated at the sintering temperature of 1200 °C. With the increase of sintering temperature from 1200 °C to 1320 °C, the micro-Ti2AlC continuous network structure gradually transforms into the nearly continuous, quasi-continuous and semi-continuous network. While the equiaxed γ-TiAl matrix gradually transforms into duplex, nearly lamellar, fully lamellar TiAl. Meanwhile, the micro-nano Ti2AlC precipitates would be formed in the TiAl matrix when the sintering temperature exceeds 1200 °C. When the sintering temperature is 1310 °C, the near lamellar TiAl matrix composite reinforced with the quasi-continuous network structured micro-Ti2AlC phases and micro-nano Ti2AlC precipitates is obtained, and the as-prepared composite possesses the best mechanical properties at both room and high temperature due to the synthetic effect of quasi-continuous network structure, intrinsic properties of Ti2AlC and lamellar TiAl. |
| first_indexed | 2024-03-12T15:19:41Z |
| format | Article |
| id | doaj.art-3419825c11c04a40ad40f785f8f3e387 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:19:41Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-3419825c11c04a40ad40f785f8f3e3872023-08-11T05:34:29ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012562096223Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architectureZhenbo Wang0Pei Liu1Aiqin Wang2Jingpei Xie3Bo Hou4College of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaCollege of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology, Luoyang 471023, China; Corresponding author. College of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaCollege of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology, Luoyang 471023, ChinaCollege of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China; Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology, Luoyang 471023, ChinaCollege of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaIn the present work, Ti2AlC/TiAl composites with network architecture were fabricated by the method of spark plasma sintering (SPS) at different temperature using Ti–48Al–2Cr–2Nb pre-alloyed powders and graphene nanosheets (GNSs) as raw materials. The effect of sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture was investigated. The results showed that equiaxed γ-TiAl matrix composite reinforced with the continuous network structured micro-Ti2AlC phases could be in-situ fabricated at the sintering temperature of 1200 °C. With the increase of sintering temperature from 1200 °C to 1320 °C, the micro-Ti2AlC continuous network structure gradually transforms into the nearly continuous, quasi-continuous and semi-continuous network. While the equiaxed γ-TiAl matrix gradually transforms into duplex, nearly lamellar, fully lamellar TiAl. Meanwhile, the micro-nano Ti2AlC precipitates would be formed in the TiAl matrix when the sintering temperature exceeds 1200 °C. When the sintering temperature is 1310 °C, the near lamellar TiAl matrix composite reinforced with the quasi-continuous network structured micro-Ti2AlC phases and micro-nano Ti2AlC precipitates is obtained, and the as-prepared composite possesses the best mechanical properties at both room and high temperature due to the synthetic effect of quasi-continuous network structure, intrinsic properties of Ti2AlC and lamellar TiAl.http://www.sciencedirect.com/science/article/pii/S2238785423016198Ti2AlC/TiAl compositesNetwork architectureMicrostructure evolutionMechanical properties |
| spellingShingle | Zhenbo Wang Pei Liu Aiqin Wang Jingpei Xie Bo Hou Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture Journal of Materials Research and Technology Ti2AlC/TiAl composites Network architecture Microstructure evolution Mechanical properties |
| title | Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture |
| title_full | Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture |
| title_fullStr | Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture |
| title_full_unstemmed | Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture |
| title_short | Effect of spark plasma sintering temperature on the multi-scale microstructure evolution and mechanical properties of Ti2AlC/TiAl composites with network architecture |
| title_sort | effect of spark plasma sintering temperature on the multi scale microstructure evolution and mechanical properties of ti2alc tial composites with network architecture |
| topic | Ti2AlC/TiAl composites Network architecture Microstructure evolution Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423016198 |
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