Study on High Chromium Steels. I : On the Anomaly of α Solid Solution of Fe-Cr System at High Temperatures

スポンサーリンク

概要

• 論文の詳細を見る

• The cause of the so-called 475℃ brittleness of a high chromium steel has not yet been determined. To study this phenomenon, the hardness, thermal expansion, electric resistance, thermal magnetic analysis, tensile test and microstructure of high chromium steels containing 15〜35 per cent of chromium were observed. When high chromium steels were heated at about 500℃, expansion is observed, and the hardness and tensile strength increased, whereas the reduction of area, elongation, electric resistance and intensity of magnetization decreased, and the magnetic transformation point shifted toward higher temperatures with the time. Clear difference in microstructure was not seen between the specimens annealed for many hours at about 500℃ and those annealed not so long, the former showing clear grain boundary etching. From these experimental results, it was concluded that this phenomenon was not caused by the usual precipitation but by the formation of a superlattice.

• 東北大学の論文

著者

• Kumada Kenzaburo

  The Research Institute For Iron Steel And Other Metals

• IMAI Yonoshin

  The Research Institute for Iron, Steel and Other Metals

関連論文

• Study on High Chromium Steels. I : On the Anomaly of α Solid Solution of Fe-Cr System at High Temperatures

スポンサーリンク