Microstructure and mechanical properties of unidirectional W filament reinforced Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites: Fid-Bau Portal

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Microstructure and mechanical properties of unidirectional W filament reinforced Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites

Jia, D.C. / Guo, S.B. / Han, H.Q. / Zhou, Y. / Li, X.L.

Unidirectional tungsten filament (W_f) reinforced pure Al, Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites was prepared by hot pressing in vacuum atmosphere and the microstructure and room temperature mechanical properties were investigated. It was indicated that no reaction products appeared at W_f/Al interfaces in pure Al matrix composite. While, in W_f/Al-6Ti-6Nb and W_f /SiCp-Al-6Ti-6Nb, intermetallic WAl₄ interfacial reaction products were formed. Much better strengthening effect from W filament was shown in the W_f/Al-6Ti-6Nb and W_f /SiCp-Al-6Ti-6Nb composites than in the pure Al matrix composite. The strength reaches 319 and 339 MPa respectively, with only a small content of W_f(<5 Vol.%). The excellent reinforcement effects could be predominantly attributed to the strong W_f/Al interfacial bonding strength due to the interfacial reaction.

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Microstructure and mechanical properties of unidirectional W filament reinforced Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites

Jia, D.C. / Guo, S.B. / Han, H.Q. / Zhou, Y. / Li, X.L.

Unidirectional tungsten filament (W_f) reinforced pure Al, Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites was prepared by hot pressing in vacuum atmosphere and the microstructure and room temperature mechanical properties were investigated. It was indicated that no reaction products appeared at W_f/Al interfaces in pure Al matrix composite. While, in W_f/Al-6Ti-6Nb and W_f /SiCp-Al-6Ti-6Nb, intermetallic WAl₄ interfacial reaction products were formed. Much better strengthening effect from W filament was shown in the W_f/Al-6Ti-6Nb and W_f /SiCp-Al-6Ti-6Nb composites than in the pure Al matrix composite. The strength reaches 319 and 339 MPa respectively, with only a small content of W_f(<5 Vol.%). The excellent reinforcement effects could be predominantly attributed to the strong W_f/Al interfacial bonding strength due to the interfacial reaction.

Microstructure and mechanical properties of unidirectional W filament reinforced Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites

Jia, D.C. / Guo, S.B. / Han, H.Q. / Zhou, Y. / Li, X.L.

Unidirectional tungsten filament (W_f) reinforced pure Al, Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites was prepared by hot pressing in vacuum atmosphere and the microstructure and room temperature mechanical properties were investigated. It was indicated that no reaction products appeared at W_f/Al interfaces in pure Al matrix composite. While, in W_f/Al-6Ti-6Nb and W_f /SiCp-Al-6Ti-6Nb, intermetallic WAl₄ interfacial reaction products were formed. Much better strengthening effect from W filament was shown in the W_f/Al-6Ti-6Nb and W_f /SiCp-Al-6Ti-6Nb composites than in the pure Al matrix composite. The strength reaches 319 and 339 MPa respectively, with only a small content of W_f(<5 Vol.%). The excellent reinforcement effects could be predominantly attributed to the strong W_f/Al interfacial bonding strength due to the interfacial reaction.

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Title:

Microstructure and mechanical properties of unidirectional W filament reinforced Al-6Ti-6Nb and SiCp-Al-6Ti-6Nb matrix composites

Contributors:

Jia, D.C. (author) / Guo, S.B. (author) / Han, H.Q. (author) / Zhou, Y. (author) / Li, X.L. (author)

Published in:

Rare Metals ; 19 ; 312-318

Publication date:

2000

Size:

7 Seiten, 3 Quellen

ISSN:

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Aluminiumlegierung , Siliciumverbindung , Wolfram , Heißpressen , Mikrostruktur , mechanische Festigkeit , Wolframfaser , Titanzusatz , Niobzusatz , faserverstärktes Metall , Grenzschicht , Verfestigung , Aluminiummatrix-Verbundwerkstoff

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