Annealing and hot deformation of Al-based composite hardened with niobium oxide dispersions.

• Autorzy: Blaz L. , Kaneko J. , Sugamata M. , Sierpiński Z. , Tumidajewicz M.
• Konferencja: 5th Polish-Japanese Symposium on Advanced Methods of Materials Characterization, Niedzica, 28.08-2.09.2004
• Języki publikacji: EN

Abstrakty

EN

A brief review of structural investigation and results of mechanical tests for mechanically alloyed Al-based composites is presented. As an example, the effect of annealing temperature on the structure and properties of Al-Nb2O5 composite was discussed. It was found that chemical reaction between components during aging at 873 K resulted in an increase of material porosity. Opposite effect of the local volume increase due to intermetallic grain growth was not efficient enough to eliminate the porosity of the annealed material. Annealing of the composite at 873 K was found to result in material hardening. The hardness maximum was observed for samples annealed for 12 h at 873 K. Following softening at prolonged annealing time was ascribed to the grain coarsening and increased porosity of the composite. High strength of the composite, suspected from highly refined structure of the material, was proved by hot deformation tests at 623-903 K.

Słowa kluczowe

EN

annealing; hot deformation; alumina composites; hardening; niobium oxide dispersion; niobium oxide

PL

wyżarzanie; odkształcenie cieplne; kompozyt aluminiowy; utwardzanie; dyspersja tlenku niobu; tlenek niobu

• Wydawca: Komitet Nauki o Materiałach PAN
• Czasopismo: Archives of Materials Science
• Rocznik: 2005
• Tom: Vol. 26, nr 1-2
• Strony: 73--78
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Blaz L.

• Academy of Mining and Metallurgy, Faculty of Materials Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland

autor

Kaneko J.

• Nihon University, Department of Mechanical Engineering, Chiba 275-8575 Japan

autor

Sugamata M.

• Nihon University, Department of Mechanical Engineering, Chiba 275-8575 Japan

autor

Sierpiński Z.

• Academy of Mining and Metallurgy, Faculty of Materials Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland

autor

Tumidajewicz M.

• Academy of Mining and Metallurgy, Faculty of Materials Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland

Bibliografia

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• [5] A. Yamazаki, J. Кaneko, M. Sugamata, L. В1az, Mater. Sci. Forum, 419-422, 829, (2003).
• [6] L. Вlaz, J. Кanaeko, M. Sugamata, Mater. Chem. Phys., 81, 387, (2003).
• [7] L. Вlaz, Z. Sierpinski, M. Tumidajewiсz, J. Кaneko, M. Sugamata, J. Alloys Сотр., 378, 343, (2004).
• [8] H. Fuji, H. Аkiуama, J. Kaneko, M. Sugamata, L. Blaz, Mater. Trans., 44, 1049, (2003).
• [9] D.G. Кim, J. Кaneko, M. Sugamata, J. Jap. Inst. Met., 57, 1325, (1993).
• [10] L. Вlaz, Z. Sierpinski, M. Tumidajewiсz, J. Kaneko, M. Sugamata, J. Sci-Tech. - in press.
• [11] H.J. McQueen, J.J. Jonas, "Plastic Deformation of Materials", Ed: R. J. Arsenault, New York, Academic Press Inc. (1975).