Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> Composites
In this study, in situ Al<sub>2</sub>O<sub>3</sub>-reinforced Ti<sub>3</sub>Al composite was fabricated after 8 h of milling and sintering at 850 °C. A mixture of TiO<sub>2</sub> and Al powders were mechanically milled in a planetary mill, cold-compact...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/11/4/617 |
| _version_ | 1827695336091549696 |
|---|---|
| author | Do Thanh Binh Tran Duc Huy Tran Viet Thuong Duong Ngoc Binh Hiroyuki Miyamoto |
| author_facet | Do Thanh Binh Tran Duc Huy Tran Viet Thuong Duong Ngoc Binh Hiroyuki Miyamoto |
| author_sort | Do Thanh Binh |
| collection | DOAJ |
| description | In this study, in situ Al<sub>2</sub>O<sub>3</sub>-reinforced Ti<sub>3</sub>Al composite was fabricated after 8 h of milling and sintering at 850 °C. A mixture of TiO<sub>2</sub> and Al powders were mechanically milled in a planetary mill, cold-compacted and sintered under a protected argon atmosphere. The microstructure and microhardness of the Al<sub>2</sub>O<sub>3</sub> embedded in Ti<sub>3</sub>Al matrix at both room and elevated temperature has been reported. The obtained results showed that the Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> composite was successfully synthesized via the powder metallurgy method. Ti<sub>3</sub>Al phase and Al<sub>2</sub>O<sub>3</sub> particles were formed after 8 h of milling and sintering at 850 °C. The microstructure formation of round and uniformly distributed Al<sub>2</sub>O<sub>3</sub> particles in the Ti<sub>3</sub>Al matrix improved the microhardness of the composite. At normal temperature, the microhardness of the material measured about 11.5 GPa. Meanwhile, at elevated temperatures, from 600 to 800 °C, it decreased from 4.18 GPa to 3.15 GPa. |
| first_indexed | 2024-03-10T12:24:56Z |
| format | Article |
| id | doaj.art-3d8d0c0f6db743aeaa297362460b51d8 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T12:24:56Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-3d8d0c0f6db743aeaa297362460b51d82023-11-21T15:05:17ZengMDPI AGMetals2075-47012021-04-0111461710.3390/met11040617Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> CompositesDo Thanh Binh0Tran Duc Huy1Tran Viet Thuong2Duong Ngoc Binh3Hiroyuki Miyamoto4School of Materials Science and Engineering, Hanoi University of Science and Technology, No.1, Dai Co Viet Street, Hai Ba Trung 116000, VietnamSchool of Materials Science and Engineering, Hanoi University of Science and Technology, No.1, Dai Co Viet Street, Hai Ba Trung 116000, VietnamFaculty of Metallurgy, College of Mechanics and Metallurgy, No. 44 Luong Son Street, Song Cong City, Thai Nguyen 24800, VietnamSchool of Materials Science and Engineering, Hanoi University of Science and Technology, No.1, Dai Co Viet Street, Hai Ba Trung 116000, VietnamDepartment of Mechanical and Systems Engineering, Doshisha University, Kyotanabe 610-0394, JapanIn this study, in situ Al<sub>2</sub>O<sub>3</sub>-reinforced Ti<sub>3</sub>Al composite was fabricated after 8 h of milling and sintering at 850 °C. A mixture of TiO<sub>2</sub> and Al powders were mechanically milled in a planetary mill, cold-compacted and sintered under a protected argon atmosphere. The microstructure and microhardness of the Al<sub>2</sub>O<sub>3</sub> embedded in Ti<sub>3</sub>Al matrix at both room and elevated temperature has been reported. The obtained results showed that the Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> composite was successfully synthesized via the powder metallurgy method. Ti<sub>3</sub>Al phase and Al<sub>2</sub>O<sub>3</sub> particles were formed after 8 h of milling and sintering at 850 °C. The microstructure formation of round and uniformly distributed Al<sub>2</sub>O<sub>3</sub> particles in the Ti<sub>3</sub>Al matrix improved the microhardness of the composite. At normal temperature, the microhardness of the material measured about 11.5 GPa. Meanwhile, at elevated temperatures, from 600 to 800 °C, it decreased from 4.18 GPa to 3.15 GPa.https://www.mdpi.com/2075-4701/11/4/617Ti-Al compositenanoparticle Al<sub>2</sub>O<sub>3</sub>mechanical milling |
| spellingShingle | Do Thanh Binh Tran Duc Huy Tran Viet Thuong Duong Ngoc Binh Hiroyuki Miyamoto Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> Composites Metals Ti-Al composite nanoparticle Al<sub>2</sub>O<sub>3</sub> mechanical milling |
| title | Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> Composites |
| title_full | Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> Composites |
| title_fullStr | Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> Composites |
| title_full_unstemmed | Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> Composites |
| title_short | Fabrication, Microstructure, and Microhardness at High Temperature of In Situ Synthesized Ti<sub>3</sub>Al/Al<sub>2</sub>O<sub>3</sub> Composites |
| title_sort | fabrication microstructure and microhardness at high temperature of in situ synthesized ti sub 3 sub al al sub 2 sub o sub 3 sub composites |
| topic | Ti-Al composite nanoparticle Al<sub>2</sub>O<sub>3</sub> mechanical milling |
| url | https://www.mdpi.com/2075-4701/11/4/617 |
| work_keys_str_mv | AT dothanhbinh fabricationmicrostructureandmicrohardnessathightemperatureofinsitusynthesizedtisub3subalalsub2subosub3subcomposites AT tranduchuy fabricationmicrostructureandmicrohardnessathightemperatureofinsitusynthesizedtisub3subalalsub2subosub3subcomposites AT tranvietthuong fabricationmicrostructureandmicrohardnessathightemperatureofinsitusynthesizedtisub3subalalsub2subosub3subcomposites AT duongngocbinh fabricationmicrostructureandmicrohardnessathightemperatureofinsitusynthesizedtisub3subalalsub2subosub3subcomposites AT hiroyukimiyamoto fabricationmicrostructureandmicrohardnessathightemperatureofinsitusynthesizedtisub3subalalsub2subosub3subcomposites |