オーステナイト系不銹鋼の高温引張特性について

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タイトル別名
  • The Tensile Strength Characteristics of Austenitic Stainless Steel at Elevated Temperature
  • オーステナイトケイ フシュウコウ ノ コウオン ヒッパリ トクセイ ニ ツイテ

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抄録

The tensile strength of austenitic stainless steels decreased with rising temperature up to about 300°C, but it remained almost constant at 300∼600°C. This may be explained as follows: The decrease in tensile strength with rise of temperature is suppressed by precipitation of chromium carbide and other precipitates along the slip bands which takes place during the tensile test at this temperature range. This was confirmed by microscopic examination. If the precipitation is prevented by some devices, the tensile strength of stainless steels would be decreased continuously with rise of temperature, as pure metals do. This assumption was confirmed by a tensile test on sharp-notched specimen. It may be reasonable to conclude that the strength of austenitic stainless steels at elevated temperatures is significantly affected by structural changes which occur during the tensile test, and then cold or hot-working at a suitable temperature makes it possible to improve the high temperature strength of this alloy.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (10), 650-654, 1960

    公益社団法人 日本金属学会

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