30Ni-20Cr 系ステンレス鋼の機械的性質および耐食性におよぼす Mo, Si, Cu 複合添加の影響 : 30Ni-20Cr 系ステンレス鋼に関する研究 II

概要

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Effect of simple or combined addition of Mo, Si and Cu, on the properties of 30Ni-20Cr stainless was investigated by hardness, tensile, microscopic and corrosion tests. The corrosion tests were carried out with specimens in boiling 5 wt% H_2SO_4 and 1 wt% HCl for 6 hours. The following results were obtained. (1) Against boiling in 5 wt% H_2SO_4 and 1 wt% HCl, 30Ni-20Cr stainless steels containing 3% Mo showed an appreciable corrosion resistance and the same steel containing 3% Mo+3% Cu showed a superior corrosion resistance. Moreover addition of 3∿3.5% Si improved mechanical properties in some degree. (2) A decrease in elongation and Charpy impact value probably may be attributed to the amount, form and distribution of a metallic compound (Fe_2Mo), the amount of which has been increased mainly by addition of Mo.
社団法人日本鉄鋼協会の論文
1962-06-01