Hostname: page-component-848d4c4894-pjpqr Total loading time: 0 Render date: 2024-06-27T21:21:25.435Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanical Properties of Co Alloys Based on a E21 Type CO3AlC Intermetallic Compound

Published online by Cambridge University Press:  01 January 1992

Hideki Hosoda ,
Masaru Takahashi ,
Tomoo Suzuki  and
Yoshinao Mishima
Hideki Hosoda
Affiliation:
Graduate Student, Department of Materials Science and Engineering, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 227, Japan
Masaru Takahashi
Affiliation:
Graduate Student, Department of Materials Science and Engineering, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 227, Japan
Tomoo Suzuki
Affiliation:
Department of Metallurgical Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152, Japan
Yoshinao Mishima
Affiliation:
Precision and Intelligence Laboratory, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 227, Japan
Get access

Abstract

Alloy design of a new Co-base heat resisting alloy is being pursued. Similar to Ni3Al in the Ni-base superalloys, the introduction of E21 type intermetallic compound Co3AlC as a strengthening phase in a Co solid solution matrix is being attempted. Three experimental alloys are prepared which consist of either two or three phases. Two phase alloys consist of the Co terminal solid solution and the Co3AlC, while a three phase alloy contains additional B2 phase based on CoAl. Temperature dependence of strength is measured for all the three alloys to reveal that the alloys could exhibit comparable intermediate to high temperature strength with Ni-base superalloys and that, most astonishingly, are found to be quite ductile over all the test temperature including 77 K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 793
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Miner, R.V., in Superalloys II, ed. by Sims, C.T., Stoloff, N.S. and Hagel, W.C., (John Wiley & Sons, New York) p.263.Google Scholar
[2] Pettit, F.S. and Giggins, C.S., in Superalloys II, ed. by Sims, C.T., Stoloff, N.S. and Hagel, W.C., (John Wiley & Sons, New York), p.327 Google Scholar
[3] Takasugi, T. and Izumi, O., Acta Metall., 33 (1985) p.39.Google Scholar
[4] Huetter, L.J., Stadelmaier, H.H. and Fracker, A.C., Metall., 14 (1960) p.113.Google Scholar
[5] Hollox, G.E., Mater. Sci. Eng., 3 (1968/1969) p.l21.Google Scholar
[6] Gabb, T.P. and Dreshfield, R.B., in Superalloys II, ed by Sims, C.T., Stoloff, N.S. and Hagel, W.C., (John Wiley & Sons, New York) p.575.Google Scholar