鋼の定荷重下における水素ぜい化に関する研究(第 4 報) : 鋼の水素ぜい化におよぼす組成の影響

概要

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From the previous results reported by authors, it seems that the microstructure and the compositions of steels would exert a serious influence on the hydrogen embrittlement. In this report, first, the effects of the kinds and quantities of alloying elements in steel on the sensitivity of hydrogen embrittlement were studied. Results obtained are as follows : (I) In the case of Ti or Nb being the alloying element, it is confirmed that steels are embrittled remarkably, even if these elements are contained only in small quantity in steels. (2) In the case of Mo, Mn or Si being the alloying element, steels are hardly embrittled. (3) In general, it can be said that the sensitivity of hydrogen embrittlement depending upon the content of each alloying element is a similar tendency to the consolidation of ferrite matrix influenced by these elements forming solid solution in steel or iron. (4) Commercial chromium steels are observed to have less sensitivity of hydrogen embrittlement than mild steel. This phenomenon might be attributed not to the behavior of Cr but to the lower carbon content of Cr steel.
社団法人溶接学会の論文
1967-10-25