SCM鋼の水素吸蔵農と割れ挙動への影響(<小特集>腐食防食小特集)

概要

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Hydrogen content in SCM 3 and 5 steels was measured as a function of electrode potential, temperature, sustained strain and strength of steel by using a modified electrochemical permeation technique with which nickel in replace of palladium was electrodeposited on the surface of specimen. The deformation of specimen was found to cause a significant increase in hydrogen content. The time to failure of the notched specimen of SCM 5 steel was measure by changing stress and hydrogen content. The hydrogen content at the cracked part of specimen was estimated from a solution of diffusion equation and was found to be fair agreement with other studies. However, the specimen having a higher content of hydrogen prior to loading and a notch filled with resin showed a longer life. The reason of such abnormal phenomenon is not clear yet.
社団法人日本材料学会の論文
1980-11-15