In situ ceramic particle-reinforced aluminum matrix composites fabricated by reaction pressing in the TiO2 (Ti)-Al-B (B2O3) systems

Z. Y. Ma; S. C. Tjong

doi:10.1007/s11661-997-0123-5

Author(s)

Z. Y. Ma
S. C. Tjong

Detail(s)

Original language	English
Pages (from-to)	1931-1942
Journal / Publication	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	28
Issue number	9
Publication status	Published - 1997

Link(s)

DOI	DOI https://doi.org/10.1007/s11661-997-0123-5 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-0031233804&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(6c4547ee-14af-4ffd-8dde-c1a12d2643f5).html

Abstract

Participate TiB₂ reinforced aluminum-based metal matrix composites (MMCs) were successfully fabricated by means of the reaction processing method. TiB₂ particulates were formed in situ through the reaction of Ti and B in Ti-Al-B, TiO₂ and B in TiO₂-Al-B, and TiO₂ and B₂O₃ in TiO₂-Al-B₂O₃ systems. The results showed that in situ TiB₂ particulates formed in the Ti-Al-B system had a size of 5 jum and they exhibited block and rodlike structures. Moreover, coarse Al3Ti blocks several tens of micrometers in size were also formed simultaneously. On the other hand, equiaxed A12O₃ and TiB₂ particulates with a size of less than 2 μm were formed in situ in the TiO₂-Al-B and TiO₂-Al-B₂O₃ systems. The Al₃Ti phase was completely eliminated in the TiO₂-Al-B system with increasing B content. Tensile tests revealed that the Al₂O₃ TiB₂/Al composite fabricated from the TiO₂-Al-B system exhibits excellent mechanical properties. The yield strength of the A12O₃ TiB₂/Al composite appeared to increase with increasing TiB₂ content. The yield strength of the A12O₃ TiB₂/Al composite could be further increased by introducing CuO into the TiO₂-Al-B system. Such an increment in mechanical strength arose from the strengthening effect caused by the Al2Cu precipitates. The incorporation of CuO had no effect on the situ reaction process of the TiO₂-Al-B system. Finally, the effect of SiC addition on the microstructure and mechanical properties of the composites fabricated from the TiO₂-Al-B and TiO₂-Al-B-CuO systems was also investigated.

Citation Format(s)

[ RIS ] [ BibTeX ]

In situ ceramic particle-reinforced aluminum matrix composites fabricated by reaction pressing in the TiO₂ (Ti)-Al-B (B₂O₃) systems. / Ma, Z. Y.; Tjong, S. C.
In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 28, No. 9, 1997, p. 1931-1942.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Ma, ZY & Tjong, SC 1997, 'In situ ceramic particle-reinforced aluminum matrix composites fabricated by reaction pressing in the TiO₂ (Ti)-Al-B (B₂O₃) systems', Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 28, no. 9, pp. 1931-1942. https://doi.org/10.1007/s11661-997-0123-5

Ma, Z. Y., & Tjong, S. C. (1997). In situ ceramic particle-reinforced aluminum matrix composites fabricated by reaction pressing in the TiO₂ (Ti)-Al-B (B₂O₃) systems. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 28(9), 1931-1942. https://doi.org/10.1007/s11661-997-0123-5

Ma ZY, Tjong SC. In situ ceramic particle-reinforced aluminum matrix composites fabricated by reaction pressing in the TiO₂ (Ti)-Al-B (B₂O₃) systems. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 1997;28(9):1931-1942. doi: 10.1007/s11661-997-0123-5

Ma, Z. Y. ; Tjong, S. C. / In situ ceramic particle-reinforced aluminum matrix composites fabricated by reaction pressing in the TiO₂ (Ti)-Al-B (B₂O₃) systems. In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 1997 ; Vol. 28, No. 9. pp. 1931-1942.