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논문 기본 정보

자료유형
학술저널
저자정보
Masoud Mosallaee (Yazd University) Afshin Babanejhad (Yazd University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.8
발행연도
2021.1
수록면
2,837 - 2,847 (11page)

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초록· 키워드

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The correlation between microstructure and pitting corrosion resistance of transient liquid phase (TLP) bonded 2205 duplexstainless steel (DSS) using BNi-6 interlayer (Ni–10.8 wt% P) was investigated. Experimental results revealed that not onlyprogress of the isothermal solidification (IS), but also cooling procedure after the TLP bonding considerably affected thepitting corrosion resistance of the TLP bonded specimen. Potentiodynamic polarization (PDP) results revealed that pittingpotential of the furnace cooled TLP specimen (FC-TLP) was increased from + 0.274 to + 0.557 V by completing the IS. SEM/EDS analyses showed that the bonding zone (BZ) was the weakest zone to pitting corrosion before completing the ISand the pitting attacks severely occurred in the bonding zone (BZ) centerline. After completion of the IS, the pitting corrosionpreferentially occurred in vicinity of (Mo–P) rich intermetallic precipitates in the diffusion affected zone (DAZ) ofFC-TLP specimen. Microstructural studies also revealed that water quenching after the TLP bonding prevented the formationof (Mo–P) rich intermetallic precipitates in the DAZ. It resulted in the significant increase of the pitting potential of watercooled TLP specimen to + 1.096 V after IS completion, which was very close to that of the as-received BM (+ 1.220 V).

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