COMPARISON OF SOLUTION-TREATMENT EFFECT ON INTERGRANULAR CORROSION OF 304 AND 321 STAINLESS STEELS BY ELECTROCHEMICAL IMPEDANCE TECHNIQUE

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MORSHED BEHBAHANI KHASHAYAR; PAKSHIR MAHMOUD; MATIN SINA

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Journal: Journal of Advanced Processes in Materials Engineering Year:2014 | Volume:8 | Issue:1 (28) Page(s): 61-71

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Title

COMPARISON OF SOLUTION-TREATMENT EFFECT ON INTERGRANULAR CORROSION OF 304 AND 321 STAINLESS STEELS BY ELECTROCHEMICAL IMPEDANCE TECHNIQUE

Author(s)

MORSHED BEHBAHANI KHASHAYAR | PAKSHIR MAHMOUD | MATIN SINA | Issue Writer Certificate

Keywords

STAINLESS STEELQ3

ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS)Q2

HEALING EFFECTQ2

INTERGRANULAR CORROSIONQ2

Abstract

In this study, the effect of solution treatment on DOS (Degree of Sensitization) of AISI 304&321 STAINLESS STEELs (SS) was investigated by EIS and SEM images in the standard solution of EPR test (0.5M H2SO4+0.01M KSCN). EIS was employed to determine the DOS of the samples in 1.0 and 1.05 V related to the chromium dissolution potential region of SS. The results showed that the INTERGRANULAR CORROSION resistance of the solution-treated samples was improved. The lower R in 1 and 1.05 V, the higher DOS. The SEM images of the samples in the 1.0 and 1.05 V confirm the obtained results of the EIS. In addition HEALING EFFECT was observed for as-received samples. These samples had lower Rct in comparison with solution treated ones under all the studied condition, but their Ret increased above 600oC. This increase in Rct of as-received samples above 600oC, which is associated with HEALING EFFECT, may be attributed to formation of chromium carbides in the grain-interiors.

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APA: Copy

MORSHED BEHBAHANI, KHASHAYAR, PAKSHIR, MAHMOUD, & MATIN, SINA. (2014). COMPARISON OF SOLUTION-TREATMENT EFFECT ON INTERGRANULAR CORROSION OF 304 AND 321 STAINLESS STEELS BY ELECTROCHEMICAL IMPEDANCE TECHNIQUE. ADVANCED PROCESSES IN MATERIALS, 8(1 (28)), 61-71. SID. https://sid.ir/paper/172424/en

Vancouver: Copy

MORSHED BEHBAHANI KHASHAYAR, PAKSHIR MAHMOUD, MATIN SINA. COMPARISON OF SOLUTION-TREATMENT EFFECT ON INTERGRANULAR CORROSION OF 304 AND 321 STAINLESS STEELS BY ELECTROCHEMICAL IMPEDANCE TECHNIQUE. ADVANCED PROCESSES IN MATERIALS[Internet]. 2014;8(1 (28)):61-71. Available from: https://sid.ir/paper/172424/en

IEEE: Copy

KHASHAYAR MORSHED BEHBAHANI, MAHMOUD PAKSHIR, and SINA MATIN, “COMPARISON OF SOLUTION-TREATMENT EFFECT ON INTERGRANULAR CORROSION OF 304 AND 321 STAINLESS STEELS BY ELECTROCHEMICAL IMPEDANCE TECHNIQUE,” ADVANCED PROCESSES IN MATERIALS, vol. 8, no. 1 (28), pp. 61–71, 2014, [Online]. Available: https://sid.ir/paper/172424/en

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