Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix Composites
TiC-reinforced AZ91D magnesium alloy composites were synthesized through the in situ reaction between an AZ91D melt and Ti-C-Al preforms. The microstructural evolution characteristics and phase transformation were investigated at different melt reaction temperatures (1013, 1033, and 1053 K), with th...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/4/1278 |
| _version_ | 1797478522214678528 |
|---|---|
| author | Xinjun Zhou Zhengfu Zhang Xiulan Li Liyu Zhou Xudong Zhang Manjiao Chen |
| author_facet | Xinjun Zhou Zhengfu Zhang Xiulan Li Liyu Zhou Xudong Zhang Manjiao Chen |
| author_sort | Xinjun Zhou |
| collection | DOAJ |
| description | TiC-reinforced AZ91D magnesium alloy composites were synthesized through the in situ reaction between an AZ91D melt and Ti-C-Al preforms. The microstructural evolution characteristics and phase transformation were investigated at different melt reaction temperatures (1013, 1033, and 1053 K), with the aim of understanding the in situ formation mechanism of TiC particles from thermodynamic and kinetic perspectives. The results showed that the temperature played a critical role in determining the formation and morphology of TiC. Initially, only the Al<sub>3</sub>Ti phase was formed through the reaction between Ti and Al when the temperature was 1013 K. With the increase in the melt temperature, the A1<sub>3</sub>Ti’s thermodynamic stability decreased, and dissolution and precipitation reactions occurred at higher temperatures (1033 and 1053 K, respectively), contributing to the formation of TiC particles. The formation of the TiC phase was attributed to two factors: Firstly, A1<sub>3</sub>Ti as an intermediate product reacted with carbon and formed TiC with increasing temperature. Secondly, the in situ TiC reaction was promoted due to the increased reaction-driving force provided by the increasing temperature. |
| first_indexed | 2024-03-09T21:33:02Z |
| format | Article |
| id | doaj.art-0ae4daa227f147069052c5890b676e33 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T21:33:02Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0ae4daa227f147069052c5890b676e332023-11-23T20:50:47ZengMDPI AGMaterials1996-19442022-02-01154127810.3390/ma15041278Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix CompositesXinjun Zhou0Zhengfu Zhang1Xiulan Li2Liyu Zhou3Xudong Zhang4Manjiao Chen5Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin 644000, ChinaFaculty of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin 644000, ChinaFaculty of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin 644000, ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaTiC-reinforced AZ91D magnesium alloy composites were synthesized through the in situ reaction between an AZ91D melt and Ti-C-Al preforms. The microstructural evolution characteristics and phase transformation were investigated at different melt reaction temperatures (1013, 1033, and 1053 K), with the aim of understanding the in situ formation mechanism of TiC particles from thermodynamic and kinetic perspectives. The results showed that the temperature played a critical role in determining the formation and morphology of TiC. Initially, only the Al<sub>3</sub>Ti phase was formed through the reaction between Ti and Al when the temperature was 1013 K. With the increase in the melt temperature, the A1<sub>3</sub>Ti’s thermodynamic stability decreased, and dissolution and precipitation reactions occurred at higher temperatures (1033 and 1053 K, respectively), contributing to the formation of TiC particles. The formation of the TiC phase was attributed to two factors: Firstly, A1<sub>3</sub>Ti as an intermediate product reacted with carbon and formed TiC with increasing temperature. Secondly, the in situ TiC reaction was promoted due to the increased reaction-driving force provided by the increasing temperature.https://www.mdpi.com/1996-1944/15/4/1278AZ91D magnesium alloyin situ TiCAl<sub>3</sub>Tiformation mechanismthermodynamicskinetics |
| spellingShingle | Xinjun Zhou Zhengfu Zhang Xiulan Li Liyu Zhou Xudong Zhang Manjiao Chen Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix Composites Materials AZ91D magnesium alloy in situ TiC Al<sub>3</sub>Ti formation mechanism thermodynamics kinetics |
| title | Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix Composites |
| title_full | Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix Composites |
| title_fullStr | Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix Composites |
| title_full_unstemmed | Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix Composites |
| title_short | Microstructure and Phase Evolution Characteristics of the In Situ Synthesis of TiC-Reinforced AZ91D Magnesium Matrix Composites |
| title_sort | microstructure and phase evolution characteristics of the in situ synthesis of tic reinforced az91d magnesium matrix composites |
| topic | AZ91D magnesium alloy in situ TiC Al<sub>3</sub>Ti formation mechanism thermodynamics kinetics |
| url | https://www.mdpi.com/1996-1944/15/4/1278 |
| work_keys_str_mv | AT xinjunzhou microstructureandphaseevolutioncharacteristicsoftheinsitusynthesisofticreinforcedaz91dmagnesiummatrixcomposites AT zhengfuzhang microstructureandphaseevolutioncharacteristicsoftheinsitusynthesisofticreinforcedaz91dmagnesiummatrixcomposites AT xiulanli microstructureandphaseevolutioncharacteristicsoftheinsitusynthesisofticreinforcedaz91dmagnesiummatrixcomposites AT liyuzhou microstructureandphaseevolutioncharacteristicsoftheinsitusynthesisofticreinforcedaz91dmagnesiummatrixcomposites AT xudongzhang microstructureandphaseevolutioncharacteristicsoftheinsitusynthesisofticreinforcedaz91dmagnesiummatrixcomposites AT manjiaochen microstructureandphaseevolutioncharacteristicsoftheinsitusynthesisofticreinforcedaz91dmagnesiummatrixcomposites |