Abstract
The effect of thermal cycling between the MfAf on the thermal hysteresis, temperature dependence, and the morphology of the martensitic transformation in a Cu-Zn-AI alloy was studied. The hysteresis behavior of the cyclic transformation, as characterized by following the change in electrical resistivity accompanying the transformation changed in two respects: First, the Ms and Af temperature shifted to higher temperatures while the Mf and As temperatures remained constant. Second, the amount of martensite undergoing cyclic transformation decreased. These changes appeared to saturate at 300 cycles and could be partly recovered during room temperature aging. The morphology and mode of transformation also changed. During the first few cycles, transformation occurred in two simultaneous ways: (1) as martensite plates which are observed to grow and thicken in a continuous manner and (2) as plates which form in a “burst” process. After 60 cycles no “burst” type transformation occurred during cooling and plate growth and thickening was stepwise.
Similar content being viewed by others
References
S. Kajiwara and W. S. Owen:Metall. Trans., 1974, vol. 5, p. 2047.
M. Umemoto and C. M. Wayman:Proceedings of First JIM International Symposium on New Aspects of Martensitic Transformation, Kobe, Japan, 1976, Supplement to Trans. JIM, 1976, vol. 17, p. 193.
Horace Pops and T.B. Massalski:Trans. TMS-AIME, 1964, vol. 230, p. 1662.
Setsuo Kajiwara:Trans. Natl. Res. Inst. Met. (Jpn.), 1976, vol. 18,p. 220.
T.A. Schroeder, I. Cornells, and C.M. Wayman:Metall. Trans. A,1976, vol. 7A, p. 535.
R. Rapacioli, M. Chandrasekaran, and L. Delaey:Shape Memory Effects in Alloys, Plenum Press, New York, NY, 1975, p. 365.
Author information
Authors and Affiliations
Additional information
Formerly Visiting Scholar, Department of Materials Engineering, Rensselaer Polytechnic Institute, Troy, NY
Rights and permissions
About this article
Cite this article
Li, JC., Ansell, G.S. The effect of thermal cycling on the thermoelastic martensitic transformation in a Cu-Zn-Al alloy. Metall Trans A 14, 1293–1297 (1983). https://doi.org/10.1007/BF02664811
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02664811