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Iranian Journal of Materials Science and Engineering، جلد ۱۷، شماره ۱، صفحات ۰-۰
عنوان فارسی
چکیده فارسی مقاله
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عنوان انگلیسی The Effect of Different Heat Treatment Procedures on Duplex Stainless Steel Microstructures and Electrochemical Properties
چکیده انگلیسی مقاله In this paper, the effects of solutioning and various aging heat treatment processes on the microstructure, the hardness and electrochemical properties of a duplex stainless steel (DSS) were studied. The evaluation of the microstructure and phase compositions were carried out by the optical microscopy (OM) and the X-ray diffraction (XRD), respectively. Electrochemical behaviors of specimens were evaluated by both potentiodynamic polarization and electrochemical impedance spectra (EIS) tests at temperatures of 25 and 60 ºC. The obtained results showed that the solutioning heat treatment increased corrosion rates with respect to the blank specimen. The aging process at 490 ºC for 20 hrs increased the volume percent of the carbide phase to the highest value (25.1%) which resulted in an increase of the hardness value to 170 VHN. The specimen which was aged at 540 ºC for 10 hrs with the Cr7C3 size of 22.8 µm, exhibited the higher corrosion resistance at both temperatures of 25 and 60 ºC with respect to other aged specimens. In addition, the temperature of 60 ºC promoted the anodic reactions in 3.5 wt% NaCl solution which decreased impedance modulus values significantly. Consequently, the carbide size was more effective parameter than the carbide content in predicting electrochemical behaviors of such alloys. 
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نویسندگان مقاله | M. Azadi
Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran


| M. Ferdosi
Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran


| H. Shahin
Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-2315-1&slc_lang=en&sid=1
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/454/article-454-2247291.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه سطح پوشش و خوردگی
نوع مقاله منتشر شده Research paper
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