Abstract
Mechanical grinding (MG) of rapidly solidified crystalline powders has been performed by the use of a conventional ball-mill. It produced amorphous AI-15 and 20at% Cr alloys. Starting powders for MG were prepared from the ribbons by the single roller method and the component of them was mainly icosahedral quasicrystal. This treatment made it possible to produce the amorphous phase by MG even in the alloy system where liquid quenching did not result in the formation of amorphous phase. The amorphous phase obtained in AI-20 at % Cr alloy was stable up to about 820 K at the continuous heating rate of 0.33 K sec−1 and the activation energy for crystallization was about 240 kJ mol−1.
Similar content being viewed by others
References
C. C. KOCH, O. B. CAVIN, C. G. McKAMEY and J. O. SCARBROUGH, Appl. Phys. Lett. 43 (1983) 1017.
R. B. SCHWARZ, R. R. PETRICH and C. K. SAW, J. Non-Crystalline Solids 76 (1985) 281.
E. HELLSTERN and L. SCHULTZ, Appl. Phys. Lett. 48 (1986) 124.
R. B. SCHWARZ and C. C. KOCH, ibid. 49 (1986) 146.
A. INOUE, H. M. KIMURA, K. MATSUKI and T. MASUMOTO, J. Mater. Sci. Lett. 6 (1987) 979.
L. SCHULTZ, Mater. Sci. Eng. 97 (1988) 15.
A. Ye. YERMAKOV, Ye. Ye. YURCHIKOV and V. A. BARINOV, Fiz. Met. Metalloved. 52 (1981) 1184.
C. C. KOCH and M. S. KIM, J. Physique 46 (1985) C8–573.
R. M. DAVIS and C. C. KOCH, Scripta Metall. 21 (1987) 305.
P. Y. LEE and C. C. KOCH, Appl. Phys. Lett. 50 (1987) 1578.
P. Y. LEE and C. C. KOCH, J. Mater. Sci. 23 (1988) 2937.
R. B. SCHWARZ, Mater. Sci. Eng. 97 (1988) 71.
T. B. MASSALSKI, J. L. MURRY, L. H. BENNETT and H. BAKER, “Binary Alloy Phase Diagrams”, Vol. 1 (American Society for Metals, Metals Park, Ohio, 1986) p. 104.
A. INOUE, H. KIMURA and T. MASUMOTO, J. Mater. Sci. 22 (1987) 1758.
S. R. NISHITANI, Y. IWASA, K. N. ISHIHARA and P. H. SHINGU, Trans. Jpn Inst. Met. 28 (1987) 679.
K. F. KOBAYASHI, N. TACHIBANA and P. H. SHINGU, J. Mater. Sci. 24 (1989) 2437.
H. E. KISSINGER, Anal. Chem. 29 (1957) 1702.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kobayashi, K.F., Tachibana, N. & Shingu, P.H. Amorphous Al-Cr alloys by mechanical grinding of rapidly solidified crystalline powders. J Mater Sci 25, 801–804 (1990). https://doi.org/10.1007/BF03372165
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03372165