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Tensile Properties of a Heat-Resistant Aluminium Alloy Strengthened by T-Al6Mg11Zn11 Intermetallic Phase

Published online by Cambridge University Press:  11 February 2019

Satoshi Nakatsuka ,
Masato Ishihara ,
Naoki Takata ,
Asuka Suzuki  and
Makoto Kobashi
Satoshi Nakatsuka
Affiliation:
Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
Masato Ishihara
Affiliation:
Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
Naoki Takata*
Affiliation:
Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
Asuka Suzuki
Affiliation:
Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
Makoto Kobashi
Affiliation:
Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8603, Japan
*
*(Email: [email protected])
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Abstract

We have examined tensile properties of a novel heat-resistant aluminium (Al)-based alloy (with a composition of Al-5Mg-3.5Zn (at%)) strengthened by the T-Al6Mg11Zn11 (cubic) intermetallic phase at various temperatures. The tested specimens of the present alloy were solution-treated at 450°C for 24 h and subsequently aged at 200 or 300 oC for 1 h. The granular precipitates of the T phase were dispersed rather homogenously in the grain interior in the specimen aged at 300°C. In the specimen aged at 200°C, numerous fine precipitates with a mean size of ∼20 nm were observed in the α-Al matrix. The specimen pre-aged at 200°C for 1 h exhibited a superior strength to the conventional Al alloys at elevated temperatures ranging from 150 to 200°C (corresponding to service temperatures for compressor impellers in turbochargers).

Keywords

alloyAlmicrostructurestrengthductility
Type
Articles
Information
MRS Advances , Volume 4 , Issue 25-26: Processing and Manufacturing , 2019 , pp. 1485 - 1490
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Copyright
Copyright © Materials Research Society 2019 

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References

REFERENCES

Wallace, G., Jackson, A. and Midison, S., SAE Int. J. Mater. Manuf. 3, 405-412 (2010).CrossRefGoogle Scholar
Jackson, A. P., Wallace, G. R. and Midson, S. P., Adv. Mater. Proc. Apr. 19–22 (2010).Google Scholar
ASM Handbook Volume 2, Properties and selection: nonferrous alloys and special purpose materials, ASM International, 1990.Google Scholar
Reed, R.C., The Superalloys Fundamentals and Applications, Cambridge, 2006.10.1017/CBO9780511541285CrossRefGoogle Scholar
Perepezko, J. H., Science 326 1068-1069 (2009) .CrossRefGoogle ScholarPubMed
Takata, N., Okano, T., Suzuki, A. and Kobashi, M., Intermetallics 95, 48-58 (2018).CrossRefGoogle Scholar
Liang, P., Tarfa, T., Robinson, J. A., Wagner, S., Ochin, P., Harmelin, M. G., Seiferta, H. J., Lukasa, H. L. and Aldinger, F., Thermo. Acta 314, 87-110 (1998).CrossRefGoogle Scholar
Bergman, G., Waugh, J.L.T. and Pauling, L., Acta Crystal. 10, 254-259 (1957).CrossRefGoogle Scholar
Takata, N., Ishihara, M., Suzuki, A. and Kobashi, M., Mater. Sci. Eng. A 739, 62-70 (2019).CrossRefGoogle Scholar
Bigot, A., Auger, P., Chambreland, S. and Blavette, D., Microsc. Microanal. Microstruct. 8 103-113 (1997) .CrossRefGoogle Scholar