Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-11T04:14:33.718Z Has data issue: false hasContentIssue false
  • English
  • Français

Nonthermoelastic and Thermoelastic Martensitic Transformation Behavior Characterized by Acoustic Emission in An Fe-Pt Alloy

Published online by Cambridge University Press:  10 February 2011

H. Ohtsuka ,
K. Takashima  and
G. B. Olson
H. Ohtsuka
Affiliation:
National Research Institute for Metals, 1–2–1 Sengen, Tsukuba, Ibaraki 305, Japan. ohtsuka@nrim.go.jp
K. Takashima
Affiliation:
Department of Materials Science and Mechanical Engineering, Kumamoto University, 2–39–1 Kurokami, Kumamoto 860, Japan.
G. B. Olson
Affiliation:
Department of Materials Science and Engineering, Northwestern University, 2225 N. Campus Dr., Evanston IL, 60208–3108, U.S.A.
Get access

Abstract

Acoustic emission (AE) signals generated during the martensitic transformation in an Fe-24at%Pt alloy with various ordering treatments have been measured, and the AE parameters have been correlated with phase transformation events. AE events are generated during cooling of specimens, which is the first detection of the AE events associated with the martensitic transformation in Fe-Pt alloys. In all specimens, AE events were observed at higher temperature than the Ms temperatures determined by electrical resistivity measurement. AE events started to increase abruptly for the weakly ordered specimen with decreasing temperature. In contrast, AE events increased gradually for the highly ordered specimen with decreasing temperature. This is consistent with the nature of the transformation behavior in this alloy. The critical defect size of weakly ordered and highly ordered specimens were calculated using Ms temperature determined by AE technique. Results obtained in this investigation strongly suggests that the AE technique is useful for analysis of transformation kinetics in this alloy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 459: Symposium Y – Materials for Smart Systems II , 1996 , 407
Copyright
Copyright © Materials Research Society 1997

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] Dunne, D.P. and Wayman, C.M.: Metall. Trans., 4,, p. 137 (1973).Google Scholar
[2] Umemoto, M. and Wayman, C.M.: Metall. Trans., 9A, p. 891 (1978).Google Scholar
[3] Tadaki, T. and Shimizu, K.: Scripta Metall., 9, p. 771 (1975).Google Scholar
[4] Tadaki, T. and Shimizu, K.: Trans. JIM, 11, p. 44 (1970).Google Scholar
[5] Tadaki, T.: Trans. JIM, 18, p. 864 (1977).Google Scholar
[6] Muto, S., Oshima, R. and Fujita, F.E.: Metall Trans., 19A, p. 2723.Google Scholar
[7] Muto, S., Oshima, R. and Fujita, F.E.: Metall Trans., 19A, p. 2931 (1988).Google Scholar
[8] Olson, G.B. and Ohtsuka, H.: Proc. of Int. Symposium and Exhibition on Shape Memory Materials, Beijing (1994), Sept.Google Scholar
[9] Olson, G.B. and Cohen, M.: Ann. Rev. Mater. Sci., 11, p.1 (1981).Google Scholar
[10] Takashima, K., Higo, Y. and Nunomura, S.: Phil Mag., A49, p. 231 (1984).Google Scholar
[11] Takashima, K., Moriguchi, M. and Tonda, H.: Progress in AE V, (1990), 105.Google Scholar
[12] Yu, Z-Z. and Clapp, P.C.: Metall. Trans., 20A, p.1601 (1989).Google Scholar
[13] Yoshida, K., Takahashi, A., Sakamaki, K. and Takagi, H.: Progress in AE V, (1990), 83.Google Scholar
[14] Yoshida, K., Takahashi, A., Sakamaki, K. and Takagi, H.: Progress in AE VI (1992), 497.Google Scholar
[15] Bram, J. and Rosen, M.: Phil. Mag., 44, p. 895 (1981).Google Scholar
[16] Bram, J. and Rosen, M.: Acta Met., 30, p. 655 (1982).Google Scholar
[17] Bram, J. and Rosen, M.: Scripta Met., 13, p. 565 (1979).Google Scholar
[18] Takashima, K. and Nishida, M.: Progress in AE VII (1994), 155.Google Scholar
[19] Takashima, K. and Nishida, M.: Journal de Physique IV (1995), C8–735 Google Scholar
[20] Olson, G.B., Tsuzaki, K. and Cohen, M.: Mat. Res. Soc. Symp. Proc. 57, p.129 (1987).Google Scholar
[21]. Tong, H.C. and Wayman, C.M., Metall. Trans., 5, p. 1945 (1974).Google Scholar
[22] Salzbrenner, R.J. and Cohen, M., Acta Metall., 27, p. 739 (1979).Google Scholar
[23] Olson, G.B. and Cohen, M., Metall. Trans., 7A, p. 1925 (1976).Google Scholar
[24] Olson, G.B. and Cohen, M. in Dislocation in Solids, vol. 7, North-Holland (1986), p. 295.Google Scholar
[25] Ling, H.C. and Owen, W.S., Acta Metall., 29, p. 1721 (1981).Google Scholar