常温海水によるステンレス鋼の応力腐食割れの検討
1972 年 21 巻 5 号 p. 219-223
詳細
1972 年 21 巻 5 号 p. 219-223
Susceptibility of several stainless steels with ordinary compositions to stress corrosion cracking in sea water at ambient temperature has been studied in relation to the examination of the corrosion of the marine machines such as sea water-pumped storage power plants by exposing about 360 stressed specimens to sea water for 30 months. Although transgranular cracking usually seen in high temperature chloride solution was not observed, intercrystalline cracking was produced in the sensitized as well as welded 18 Cr-8 Ni rolled steel, and a few cracks due to the selective corrosion of ferritic parts were also observed in the solution heat treated 18 Cr-8 Ni cast steel. On the contrary, solution heat treated 18 Cr-8 Ni rolled steels, stress relieved 18 Cr-8 Ni cast steels and 18 Cr-14 Ni-Mo cast steels exhibited immunity to stress corrosion cracking.
