V. Kuzucu et al., AN INVESTIGATION OF STELLITE-6 ALLOY CONTAINING 5.0 WT-PERCENT SILICON, Journal of materials processing technology, 79(1-3), 1998, pp. 47-51
Citations number
10
Categorie Soggetti
Material Science","Engineering, Manufacturing","Engineering, Industrial
Metal microscopy, X-ray diffraction, differential scanning calorimeter
and hardness tests were used to examine and analyze the details of th
e microstructure of a cobalt based alloy with the composition Co-28Cr-
5Si-4W-1.1C. The cast sample has a dendritic microstructure. Eutectic
carbides such as M7C3, M23C6, M3C2, inter-metallic phases such as mu a
nd sigma phases and some silicon compounds such as CrSi2, WSi2, CoSi2
solidify in the inter-dendritic regions. In the samples cooled in wate
r and liquid nitrogen after annealing, some of the carbide phases and
inter-metallic phases disperse in the dendritic grains, their hardness
es being found to be greater than the hardness of the cast sample. In
addition, it is seen that the reverse martensitic or ordering transfor
mations occur in the heating regime between 200 and 450 degrees C depe
nding on the heat treatment applied to the samples. (C) 1998 Elsevier
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