オートラジオグラフィーによる17Cr鋼の凝固組織について
1979 年 65 巻 9 号 p. 1457-1459
詳細
1979 年 65 巻 9 号 p. 1457-1459
It was not satisfactorily elucidated that the casting structure of 17Cr stainless without any other elements has either dendritic morphology or not.
Because difference between liquidus and solidus temperature was small, it was considered that the difference of solute concentrations between primary and final solidified crystals was very small.
Therefore, the dendritic structure has not be easily confirmed by a few conventional etching method utilizing common etching agents. But, using radioactive nuclide as indicator, even small amount of solute could be detected by autoradiography.
The present report has assured that the dendritic structure of Fe-17% Cr added very small amount of radioactive sulfur-35 was observed on the autoradiograph.
