Formation of metal-metal type aluminum-based amorphous alloys
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REFERENCES 1. D. Fisher and W. Kurz: Solidification and Casting of Metals, The Metals Society, London, 1979, p. 57. 2. W. Kurz and P. Sahm: Gerichtet erstarte eutektische Werkstofe, Springer-Verlag, Berlin, 1975. 3. W. Kurz and D. J. Fisher: Int. Metals Reviews, 1979, vol. 144, p. 177. 4. J. Van den Boomgaard and L. R. Wolff: J. Cryst. Growth, 1972, vol. 15, p. 11. 5. J. Van den Boomgaard and A. M. J. G. van Run: Conference ofln Situ Composites, NMAB-308-II, National Academy of Sciences, Washington, 1972, p. 161. 6. F.D. Lemkey and E. R. Thompson: In Situ Composites IV, Proceedings MRS Symposium, Elsevier, North Holland, 1983, p. 31. 7. E D. Lemkey and E. R. Thompson: J. Mat. Sci., 1984, vol. 19, p. 965. 8. H. Cline and J. Livingston: Trans. TMS-AIME, 1969, vol. 245, p. 1987. 9. F. Mollard and M . C . Flemings: Trans. TMS-AIME, 1967, vol. 239, p. 1526.
Formation of Metal-Metal Type Aluminum-Based Amorphous Alloys AN-PANG TSAI, AKIHISA INOUE, and TSUYOSHI MASUMOTO It has recently been found that, similar to the transition metal-based alloys such as iron, cobalt, nickel, and titanium, etc., Al-based amorphous alloys can be formed by the conventional melt spinning method. The aluminumbased alloy systems in which amorphization has so far been reported are as follows: A1-Fe-B,t~] AI_Co_B,I~I A1-Fe-Si (or Ge), t21 A1-Mn-Si, t31 A1-M-Si (M = Cr, Mo, Mn, Fe, Co, or AN-PANG TSAI, with the Graduate School, Department of Materials Science and Engineering, and AKIHISA INOUE, Associate Professor, and TSUYOSHI MASUMOTO, Professor, Institute for Materials Research, are with Tohoku University, Katahira 2-1-1, Sendai 980, Japan. Manuscript submitted August 3, 1987. METALLURGICAL TRANSACTIONS A
Ni), f4l and AI-M-Ge (M = V, Cr, Mo, Mn, Fe, Co, or Ni). 141 Thus, the alloy systems are limited to metal-metalloid types and little information has been provided on the glass formation of metal-metal type aluminum-based alloys, even though the aluminum-M (M = Cu, Ni, Cr, or Pd) binary alloys prepared by splat quenching using piston-anvil and gun methods include an amorphous phase as well as a crystalline phase, r5-81Based on the fact that most conventional aluminum-based crystalline alloys consist only of metallic components, it is important from both the scientific and engineering points of view to examine the possibility of amorphization of aluminum-based alloys without the dissolution of a metalloid and to clarify the characteristics of the metal-metal type aluminum-based amorphous alloys. The authors have found for the first time that an amorphous phase can be formed in melt-spun A1-Cu-M, A1-Ni-M, A1-Co-M, and A1-Fe-M (M = early transition metals) alloys. This paper attempts to clarify the alloy systems in which the meta
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