オーステナイト系不銹鋼のクリープ破断強度と組織の変化について

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タイトル別名
  • Studies on Creep Rupture Strength and Changes of Microstructure of Austenitic Stainless Steels
  • オーステナイトケイ フシュウコウ ノ クリープハダンキョウド ト ソシキ ノ ヘンカ ニ ツイテ

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抄録

Creep rupture tests were carried out at 600°C on plain specimens and two different types of notched specimens, and the changes of their microstructure after creep test were examined. The specimens used were AISI type 304, 304L and an iron-base high-chromium high-nickel alloys. The creep rupture strength was not much affected by the notches of the specimen. The microstructures of specimens, which were ruptured after comparatively short time under comparatively higher stresses, revealed a large number of slip bands in each grain and a drastic deformation of individual grain. In the specimens ruptured after longer time, on the other hand, there appeared great many voids at the grain boundaries and a large amount of twin bands instead of slip bands or deformation of grains. These results may inform that the deformations or ruptures of specimens in both cases (short time rupture and longer time rupture) are caused by essentially different causes. Nevertheless, all the rupture datas, in each specimen, fall on a single straight line when they are plotted on logarithmic section paper.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (12), 818-822, 1960

    公益社団法人 日本金属学会

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