Hostname: page-component-8448b6f56d-dnltx Total loading time: 0 Render date: 2024-04-23T19:04:42.150Z Has data issue: false hasContentIssue false
  • English
  • Français

Phase Transformations of Ferromagnetic Fe-Pd-Pt-Based Shape Memory Alloys

Published online by Cambridge University Press:  01 February 2011

Gwon-seung Yang ,
Reid Jonasson ,
Seung-nam Baek ,
Kinzo Murata ,
Shozo Inoue ,
Keiji Koterazawa ,
Soon-jong Jeong ,
Kiyoshi Mizuuchi  and
Kanryu Inoue
Gwon-seung Yang
Affiliation:
Materials Science and Engineering, Chosun University, Kwang Ju, Korea
Reid Jonasson
Affiliation:
Materials Science and Engineering, University of Washington, WA 98195–2120, USA
Seung-nam Baek
Affiliation:
Materials Science and Engineering, Chosun University, Kwang Ju, Korea
Kinzo Murata
Affiliation:
Kobe Material Testing Lab. Co., Hyogo-ku, Kobe, Japan
Shozo Inoue
Affiliation:
Mechanical and Intelligent Engineering, Himeji Institute of Technology, Himeji, Hyogo 671–2201, Japan
Keiji Koterazawa
Affiliation:
Mechanical and Intelligent Engineering, Himeji Institute of Technology, Himeji, Hyogo 671–2201, Japan
Soon-jong Jeong
Affiliation:
Korean Electric and Magnetic Devices Group, Korea Electrotechnology Research InstituteP.O. Box 20, Changwon 641–120, Korea
Kiyoshi Mizuuchi
Affiliation:
Osaka Municipal Technical Research Institute, Osaka 536–8553, Japan
Kanryu Inoue
Affiliation:
Materials Science and Engineering, University of Washington, WA 98195–2120, USA
Get access

Abstract

Several ternary Fe-Pt-Pd alloys with the compositions of Fe-(25-x) at% Pt-x at% Pd and Fe-y at% Pt-(30-y) at% Pd were investigated to study their phase transformations in order to develop ductile ferromagnetic shape memory alloys appearing around room temperature. Alloys were prepared by vacuum floating induction melting, followed by hot rolling at 1000°C and homogenization at 900° C. Homogenized alloys were heat treated at 650°C for various periods of time in vacuum for atomic ordering in encapsulated quartz tubes, and quenched into iced water. It was found that in general the transformation temperatures changes with heat treatment time. In the case of Fe-23at.%Pt-2at.%Pd, Ms temperature increased and the difference between Ms and Mf increased with increasing heat treatment time, which was different from Fe3Pt where a degree of order becomes one. As heat treatment time increased, there was a tendency in that a strong first-order transformation in the disordered state was replaced by a weak first-order transformation. The Curie temperature of the alloys rose drastically with the addition of Pd, along with the transformation temperatures. Fe-23at.%Pt-2at.%Pd showed good shape memory effect after 8 hours of heat treatment at 650°C. This alloy showed much better shape recovery than any other binary Fe-Pt and Fe-Pd shape memory alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 785: Symposium D – Materials and Devices for Smart Systems , 2003 , D13.5
Copyright
Copyright © Materials Research Society 2004

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. Inoue, K., Oral presentation at the First US-Japan Workshop on Smart Materials and Structures, Seattle, WA 1995.Google Scholar
2. Jeong, S.-j., Inoue, K., Inoue, S., Koterazawa, K., Taya, M. and Inoue, K., Mat. Sci. Eng. 359 (2003), 253–260.10.1016/S0921-5093(03)00359-9Google Scholar
3. O'Handley, R. C., J. Appl. Phys. 83 (1998) 3263.10.1063/1.367094Google Scholar
4. Martynov, V. V. and Kokolin, V. V., de Physique, J. III, T.2, N5, 73 (1992), 739–749.Google Scholar
5. Oshima, R., Muto, B., Fujita, F. E., Hamada, T. and Sugiyama, M., MRS Int'l Mtg. On Adv. Mats, 9 (1989), 475–480.Google Scholar
6. Sugiyama, M., Oshima, R. and Fujita, F. E., Trans. JIM 27 (1986), 719–730.10.2320/matertrans1960.27.719Google Scholar
7. Inoue, S., Inoue, K., Koterazawa, K. and Mizuuchi, K., Mater. Sci. Eng. A339 (2003), 29–34.10.1016/S0921-5093(02)00101-6Google Scholar
8. Oikawa, K., Wulff, L., Iijima, T., Gejima, F., Ohmori, T., Fujita, A., Fukamichi, K., Kainuma, r. and Ishida, K., Appl. Phys. Letters, 79 (2001), 3290–3292.10.1063/1.1418259Google Scholar
9. Maki, T., Kobayashi, K., Minato, M. and Tamura, I., Scr. Metal., 18 (1984), 1105–1109.10.1016/0036-9748(84)90187-XGoogle Scholar
10. Kira, T., Murata, K., Shimada, T., Jeong, S.-j., Inoue, S., Koterazawa, K. and Inoue, K.; Materials Science Forum, 426–432 (2003), 2207–2212.10.4028/www.scientific.net/MSF.426-432.2207Google Scholar
11. Jeong, S.-j., University of Washington Ph. D. Thesis, 2000.Google Scholar
12. Tadaki, T.; Katsuki, K.; Shimizu, K.; Trans. JIM, 17 (1976), 187–192.Google Scholar
13. Muto, S.; Oshima, R.; Fujita, F.E.; Metallurgical Transactions A, 19A (1988), 2931–2936.10.1007/BF02647719Google Scholar
14. Sohmura, T.; Oshima, R.; Fujita, F.E.; Scripta Metallurgica, 14 (1980), 855–856.10.1016/0036-9748(80)90304-XGoogle Scholar
15. Oshima, R.; Muto, S.; Takahashi, M.; Materials Science Forum, 327–328 (2000), 445–448.10.4028/www.scientific.net/MSF.327-328.445Google Scholar