Mn-Si系およびMn-Mo系高張力鋼の高温高圧水素による脆化

DOI Web Site Web Site

書誌事項

タイトル別名
  • Embrittlement of Mn-Si and Mn-Mo High Strength Steels Caused by Heating at High Temperature and High Hydrogen Pressure
  • Mn-Siケイ オヨビ Mn-Moケイ コウチョウリョク コウ ノ コウオン コウアツ スイソ ニ ヨル ゼイカ

この論文をさがす

抄録

Three high strength steels were heated for various time at various temperatures 300∼500°C in 200 kg/cm2 hydrogen, and the changes of these mechanical properties and structures were studied at room temperature. The results obtained were as follows: (1) Steels which were heated at high temperature and high hydrogen pressure became brittle and remarkably decreased the mechanical strength and the ductility, besides both hardness and carbon content decreased, many inner cracks initiated and fissured at grain boundaries. Then this grain boundaries fissuring gave rise to deterioration of materials. (2) At constant temperature and pressure, it requires an incubation time to become brittle and a plot of lnt vs. reciprocal of heating absolute temperature holds a straight line relationship. (3) Activation energy of embrittlement on the kinetics of hydrogen attack was calculated, but the mechanism of embrittlement by hydrogen attack could not clearly explain. (4) Addition of carbide forming elements molybdenum and heat treatment as normalizing temper increase the resistanse to hydrogen attack and raises embrittlement limits.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 27 (4), 177-181, 1963

    公益社団法人 日本金属学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ