ステンレス鋼の応力腐食割れにおよぼす冷間加工の影響

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タイトル別名
  • Effect of Cold Working on Stress-Corrosion Cracking of Stainless Steels
  • ステンレス コウ ノ オウリョク フショク ワレ ニ オヨボス レイカン カコウ ノ エイキョウ

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抄録

An investigation was made of the effect of cold working on the susceptibility of seven austenitic stainless steels belong to AISI Type 304(or 304 L) to stress-corrosion cracking in high temperature NaCl solution (300°C, 500 ppm as Cl−) and in boiling 42%MgCl2 solution. The stress-corrosion was compared with the general corrosion in high temperature pure water and high temperature NaCl solution. These results are summarized as follows: (1) The carbon contents and heat treatments before cold working do not affect appreciably the susceptibility of stainless steel to the stress-corrosion cracking in high temperature NaCl solution. (2) The degree of cold working does not seem to have a direct relation to the susceptibility of stainless steel to the stress-corrosion cracking in high temperature NaCl solution and in boiling 42%MgCl2 solution. However, the ferrite transformed from the austenite by cold working decreases significantly the susceptibility of stainless steel to the stress-corrosion cracking in both solutions. (3) The general corrosion rate of uncracked specimens is higher than that of cracked ones.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 27 (11), 548-553, 1963

    公益社団法人 日本金属学会

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