Reduction of ferrite phase in austenitic stainless steels by controlling content of Cr-Ni equivalent
AISI 316L austenitic stainless steels are very common in the industry. Large amounts of this material are discarded as a chisel and can subsequently be used as recycled material for casting. In marine environments (highly corrosive), this type of steel presents intragranular corrosion, specifically...
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| 主要な著者: | , , , , |
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| フォーマット: | Online |
| 言語: | spa |
| 出版事項: |
Universidad Autónoma de Baja California
2020
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| オンライン･アクセス: | https://recit.uabc.mx/index.php/revista/article/view/42 |
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| 要約: | AISI 316L austenitic stainless steels are very common in the industry. Large amounts of this material are discarded as a chisel and can subsequently be used as recycled material for casting. In marine environments (highly corrosive), this type of steel presents intragranular corrosion, specifically in one of its phases, in the ferrite, so it is preferred to keep it at the lowest possible proportion (<1%), but usually it is found around the 12% of it. If a casting is required to transport a pressurized fluid from AISI 316L steel, it should be performed according to considerations described in ASTM A351 Standard. We find that CF3M steel is the most similar in terms of elemental chemical proportions of its components. Therefore, the Schaeffler and Schoefer diagrams were used to reduce the content of "equivalent ferrite" by at least 90%, making adjustments in the casting by modifying the Ni and Cr percentages. |
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