Microstructure Evolution and Mechanical Performances of SiCf Reinforced (Al3Ti?+?Al3Ni)-Based Metallic?Intermetallic Laminate Composite

Yuqiang Han; Qinghua Que; Ran Cheng; Ran Cheng; Chunfa Lin; Wenqing Han; Enhao Wang; Junyi Zhu; Haoran Yan

doi:10.1007/s12540-020-00942-z

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자료유형: 학술저널

저자정보: Yuqiang Han (Changshu Institute of Technology) Qinghua Que (Changshu Institute of Technology) Ran Cheng (Changshu Institute of Technology) Ran Cheng (Changshu Institute of Technology) Chunfa Lin (Changshu Institute of Technology) Wenqing Han (Changshu Institute of Technology) Enhao Wang (Harbin University of Science and Technology) Junyi Zhu (Changshu Institute of Technology) Haoran Yan (Changshu Institute of Technology)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.10

발행연도: 2021.10

수록면: 4,035 - 4,046 (12page)

DOI: 10.1007/s12540-020-00942-z

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In present work, a novel SiCfreinforced (Al3Ti + Al3Ni)-based metallic?intermetallic laminate (Ti?(Al3Ti + Al3Ni)/SiCf-MIL) composite without centerline defect was prepared using Ti, Al foils, NiTi wires and SiC fibers by vacuum hot pressingsintering method. Electron backscatter diffraction was employed to characterize the microstructure and phase constituents ofTi?(Al3Ti + Al3Ni)/SiCf-MIL composite during various stages of preparation process. The elimination mechanism of intermetalliccenterline was discussed. Besides, quasi-static compressive performance and fracture toughness of the synthesizedcomposite were investigated. The experimental results indicated that as reaction time increasing, the NiTi/Al interfacialreaction occurred prior to the Ti/Al interfacial reaction to form an Al3Ti/Al3Ni zone. Then, the oxides gathered at the frontof Ti/Al interfacial reaction layer were dispersed in the intermetallic layer rather than being pushed together to generate thecenterline due to the Al3Ti/Al3Ni zone. After reaction, there were no residual NiTi phases and intermetallic layers mainlyconsisting of Al3Tiand Al3Niphases were obtained in this composite. In addition, high angle grain boundaries in Al3Tigrains occupied a large proportion, conversely, low angle grain boundaries dominated in Al3Nigrains. Furthermore, stressconcentration appears at the interface between layers instead of along the middle plane of intermetallic layer. Moreover,both compressive strength and fracture toughness of the composite are superior in comparison with SiCfreinforced Ti?Al3Timetallic?intermetallic laminate composite (Ti?Al3Ti/SiCf-MIL) ascribed to the elimination of centerline.

#Fiber reinforcing #(Al3Ti + Al3Ni)- base #Metallic?intermetallic laminate composite #Microstructure evolution #Mechanical performances

참고문헌 (40)

참고문헌 신청

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