高温高圧純水におけるSUS304鋼の応力腐食割れ : 溶存酸素量およびひずみ速度の影響(昭和61年度春季全国大会論文発表講演論文)

• 圓城

  大阪大学

• 黒田 敏雄

  大阪大学

• 延 倫模

  大阪大学

書誌事項

タイトル別名

• Stress Corrosion Cracking of SUS304 Stainless Steel in High Temperature Water : Effect of Dissolved Oxygen and Strain Rate (Papers Submitted to National Meeting Spring 1986)

抄録

This study was made to investigate the effects of dissolved oxygen, strain rate and solution treatment temperature on the stress corrosion cracking (SCC) of the sensitized SUS304 stainless steel. For the specimens solution-treated at 1373K, the high IGSCC susceptibility was attributed to Cr-depleated zone and the segregation of phosphorus in the water with dissolved oxygen. However, in the deaerated water, the IGSCC susceptibility decreased. As the solution treatment temperature increased, the degree of sensitization evaluated by Strauss test decreased owing to a narrow Cr-depleated zone. In a slow strain rate test (SSRT), IGSCC susceptibility increased with decrease in the strain rate independent of the solution treatment temperature. But, for the specimens solution-treated at 1573K, SSRT results were not correspondent with Strauss results, that is, SSRT was a severe test compared with corrosion tests such as Strauss test. It was found that the electrolytic conductivity of high temperature water in SSRT was higher on sensitized specimens than on solution-treated specimens. This increase in the electrolytic conductivity seems to be related to the pit formation at the grain boundaries of the sensitized specimens.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 4 109-, 1986

  社団法人溶接学会

キーワード

• Intergranular corrosion
• Intergranular stress corrosion cracking
• Sensitization
• Solution treatment temperature
• Strain rate
• Dissolved oxygen

詳細情報

• CRID: 1571135652370541312
• NII論文ID: 110003422631
• NII書誌ID: AN1005067X
• ISSN: 02884771
• 本文言語コード: ja
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