Abstract
Lead-cadmium, Zinc-tin and Bismuth-cadmium of (99.99%) high purity eutectic alloys were melted in a graphite crucible under vacuum atmosphere. These eutectic alloys were directionally solidified upward with a constant temperature gradient G and different growth rates V in the Bridgman type directional solidification furnace. The lamellar spacings λ and microhardness H V were measured from both transverse section and longitudinal section of the specimen. The variations of H V with respect to V and λ have been determined by using the linear regression analysis method. H V values increase with the increasing values of V and decrease with the increasing λ values. The Hall-petch type relationships obtained in this work have been compared with the previous works.
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References
M. C. FLEMINGS, "Solidification Processing" (Mc Graw Hill, New York, 1974) p. 67.
R. ELLIOTT, "Eutectic Solidification Processing" (Butter Worths, London, 1983) p. 60.
W. KURZ and D. J. FISHER, Int. Metals Rev. 224 (1979) 177.
H. CLINE, Mater. Sci. Eng. 65 (1984) 93.
K. A. JACKSONand J. D. HUNT, Trans. Metall. Soc. A.I.M.E. 236 (1966) 1129.
A. MOORE and R. ELLIOTT, "The Solidification of Metals" (Brighton Joint Conference, Iron Steel Ins. Publ., 1969) p. 167.
M. A. SAVAS and R. W. SMITH, Mater. Sci., 20 (1985) 881.
E. ÇADIRLI, H. KAYA and M. GÜNDÜZ, Mater. Res. Bul. 38 (2003) 1457.
H. KAYA, E. ÇADIRLI and M. GÜNDÜZ, J. Mater. Eng. Per. 12(4) (2003) 456.
H. KAYA, Ph.D. Thesis, Directional Solidification of Binary Eutectic Alloys and Investigation of Mechanical Properties, University of Gazi, Ankara, 2001.
E. O. HALL, Proc. Phys. Soc. 64B (1957) 747.
N. J. PETCH, J. Iron Steel Inst. 173 (1953) 25.
E. ÇADIRLI, A. ÜLGEN and M. GÜNDÜZ, Mater. Trans., JIM 40 (1999) 989.
A. OURDJINI, J. LIU and R. ELLIOTT, Mater. Sci. Technol. 10 (1994) 312.
E. ÇADIRLI and M. GÜNDÜZ, J. Mater. Process. Tech. 97 (2000) 74.
S. KHAN, A. OURDJINI, Q. S. HAMED, M. A. A. NAJAFABADI and R. ELLIOTT, J. Mater. Sci. 28 (1993) 5957.
F. VNUK, M. SAHOO, R. VAN DE MERVE and R. W. SMITH, J. Mater. Sci. 14 (1979) 975.
A. I. TELLİ and S. E. KISAKÜREK, Mater. Sci. Tech. 4 (1988) 153.
H. KAYA, E. ÇADIRLI, M. GÜNDÜZ and A. ÜLGEN, J. Mater. Eng. Per. 12(05) (2003) 544.
F. VNUK, M. SAHOO, D. BARAGAR and R. W. SMITH, J. Mater. Sci. 15 (1980) 2573.
F. YILMAZ and R. ALLIOTT, J. Mater. Sci. Eng. 24 (1989) 2065.
F. YILMAZ, Mater. Sci. Eng. A 124 (1990) L1.
S. JUSTI and R. H. BRAGG, Met. Trans. 9A (1987) 515.
Idem., ibid. 7A (1976) 1954.
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Kaya, H., Gündüz, M., Çadirli, E. et al. Effect of growth rate and lamellar spacing on microhardness in the directionally solidified Pb-Cd, Sn-Zn and Bi-Cd eutectic alloys. Journal of Materials Science 39, 6571–6576 (2004). https://doi.org/10.1023/B:JMSC.0000044897.98694.be
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DOI: https://doi.org/10.1023/B:JMSC.0000044897.98694.be