焼結Ni鋼の諸性質について

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We examined some structural characters of Fe-Ni-C ternary sintered compacts on the basis of the diffusion-experimental results of (Fe-C)-Ni diffusion couple, and also investigated the mechanical properties of Fe-(0-10) wt%Ni-(0-1.0) wt%C ternary sintered compacts.<BR>The results obtained are as follows:<BR>(1) In Fe-Ni-C ternary mixed powder compacts, sintering is promoted with increasing Ni and grahite contents.<BR>(2) An unhomogeneous structure is observed in Fe-Ni-C compacts sintered at 1150°C for 60 min, and this structure may be mainly controlled by the distribution of Ni.<BR>(3) The Ni and graphite concentrations showing the maximum strength in the sintering condition at 1150°C for 60 min are approximately 10 wt% and 0.6 wt% respectively, and it is confirmed from the microstructure that a higher content of martensite is observed in the composition and austenite is scarcely observed.
社団法人粉体粉末冶金協会の論文