Hostname: page-component-6bf8c574d5-7jkgd Total loading time: 0 Render date: 2025-02-15T09:22:48.687Z Has data issue: false hasContentIssue false
  • English
  • Français

Fe-Mn-Si Based Shape Memory Alloys

Published online by Cambridge University Press:  25 February 2011

H. Otsuka
H. Otsuka*
Affiliation:
Nippon Steel Co., New Materials Divisions Group, 6-3 Otemachi 2-chome, Chiyoda-ku, Tokyo, 100-71, Japan
Get access

Abstract

Fe-Mn-Si based alloys are non-thermoelastic shape memory alloys which utilize the stress-induced transformation from γ austenite to ε martensite. After these shape memory alloys are deformed at room temperature, they recover their original shape when heated to 473K or higher. Fe-Mn-Si based alloys contain 15% to 33% Mn, 5% to 6% Si, 0% to 13% Cr, and 0% to 10% Ni in weight. Mn and Si are indispensable for the development of shape memory effect (SME). The amounts of these elements require to be adjusted so that the Neel temperature (TN) lies lower than Ms temperature and the Ms lies just below room temperature. Though the volume of stress-induced martensite is only 20 to 30%, a thermomechanical treatment called “training” has made it possible for the alloy to recover from a tensi le deformation exceeding 3%. Today, the use of the shape memory al loys for steel pipe joints is being studied. They have already been put into practical use for an auxiliary bicycle part to clamp the frame.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 246: Symposium M – Shape-Memory Materials and Phenomena--Fundamental Aspects and Applications , 1991 , 309
Copyright
Copyright © Materials Research Society 1992

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

1. Oshima, R., Sugimoto, S., Sugiyama, M., Hamada, T. and Fujita, F.E., Trans.JIM,26,523(1985).CrossRefGoogle Scholar
2. Maki, T., Furutani, S. and Tamura, I., ISIJ Int.,219,438(1989).CrossRefGoogle Scholar
3. Kajiwara, S., Trans JIM,26,595(1985).Google Scholar
4. Somura, T., Oshima, R. and Fujita, F.E., Scripta Metall., 14,855( 1985).Google Scholar
5. Sato, A., Chishima, E., Soma, K. and Mori, T.,Acta Metall.,30,1177 (1982).CrossRefGoogle Scholar
6. Murakami, M., Otsuka, H., Suzuki, H.G. and Matsuda, S., Proc.of International Conference on Martensitic Transformations., 985(1986).Google Scholar
7. Otsuka, H.,Yamada, H.,Tanahashi, H. and Maruyama, T., Materials Science Forum Copyright Trans Tech Publications, Switzerland(ICOMAT-89 Proc.), Vols.56–58(1990),p.655.Google Scholar
8. Schumann, H., Arch.Eisenhutt.,38,647(1967).Google Scholar
9. Enami, K. and Nagasawa, A., Nenno, S., Scripta Metall.,941 (1982).Google Scholar
10. Sato, A., Chishima, E. and Mori, T., Acta Metall.,32,539(1984).Google Scholar
11. Murakami, M., Suzuki, H., Nakamura, Y., Transactions ISIJ,27, B–87(1987).Google Scholar
12. Ishida, K., Nishizawa, T.,Trans. JIM,15,225(1974).CrossRefGoogle Scholar
13. Otsuka, H., Yamada, H., Maruyama, T., Tanahashi, H., Matsuda, S. and Murakami, M., ISIJ Int. 30(8),674(1990).Google Scholar
14. Otsuka, H., Murakami, M. and Matsuda, S. in Shape Memory Materials (MRS Int. Meeting on Advanced Materials Proc. 9,Pittsburgh, PA 1989)pp.451–456.Google Scholar