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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 740 - 750 (11page)
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In this study, we investigated the correlation between the microstructure and the localized corrosion characteristics for a weldmetal made up of 22Cr-9Ni duplex stainless steel (DSS) aged in the range of 400–1000 °C for 30 min. The results showedthat changes in the microstructure of the DSS weldments, owing to the formation of precipitates during the aging process,affected its pitting corrosion resistance. The microstructural evolution was found to be extremely sensitive to the secondaryphase precipitations such as chi (χ), sigma (σ), chromium nitride (Cr2N), and secondary austenite (γ2) in the aging range of700–900 °C. The potentiodynamic polarization tests confirmed that the pitting potential representing the corrosion resistancedecreased gradually from 500 °C, attained the lowest at 850 °C, and increased again at 900 °C. In addition, the Cr orMo deficient area around σ phase was transformed into the secondary austenite (γ2) phase during aging where the pittingwas found to occur.
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참고문헌 (30)
참고문헌 신청
I. Varol / 1997 / Mater. Charact 39:553~573
J.C. Lippold / 2005 / Welding Metallurgy and Weldability of Stainless Steels / Wiley :230~234
M. Esmailzadeh / 2013 / Microstructure and mechanical properties of friction stir welded lean duplex stainless steel / Mater. Sci. Eng. A 561:486~491
안상곤 / 2010 / 산업설비용 2상 스테인리스강 개발 동향 및 용접성 / 대한용접접합학회지 28(1):22~33
K. Ravindranath / 1995 / The influence of aging on the intergranular corrosion of 22 chromium–5 nickel duplex stainless steel / Corros. Sci 37:121~132
J.C. Lippold / 2005 / Welding Metallurgy and Weldability of Stainless Steels / Wiley :230~234
M. Esmailzadeh / 2013 / Microstructure and mechanical properties of friction stir welded lean duplex stainless steel / Mater. Sci. Eng. A 561:486~491
안상곤 / 2010 / 산업설비용 2상 스테인리스강 개발 동향 및 용접성 / 대한용접접합학회지 28(1):22~33
K. Ravindranath / 1995 / The influence of aging on the intergranular corrosion of 22 chromium–5 nickel duplex stainless steel / Corros. Sci 37:121~132
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