TY - GEN
T1 - Influence of annealing on microstructure and pitting corrosion resistance of UNS S32760 super duplex stainless steel repeated welds
AU - Cahyono, Eko
AU - Riastuti, Rini
AU - Mochtar, Myrna Ariati
AU - Alfian,
N1 - Funding Information:
This research was funded by the Directorate of Research and Community Engagement, University of Indonesia under the program of PITTA Grant Fund for Fiscal Year 2018, No: 2520/UN2.R3.1 HKP.05.00/2018.
Publisher Copyright:
© 2020 Author(s).
PY - 2020/4/21
Y1 - 2020/4/21
N2 - The annealing treatment influence on microstructure evolution and pitting corrosion resistance of UNS S32760 super duplex stainless steel's repeated welds were investigated. The microstructure evolution was observed through a microstructure characterization and ferrite volume fraction measurement, while pitting corrosion resistance was measured by cyclic potentiodynamic polarization. The results reveal that the original weld (OW) indicates a significant imbalance of ferrite-austenite fractions and a presence of intermetallic phase that was declining the pitting corrosion resistance. On the contrary, after 1100 °C annealing the specimens of once-repeated weld (HR1), twice-repeated weld (HR2), and three-time-repeated weld (HR3), the balance among ferrite-austenite fractions gradually restores and the intermetallic phase declines, that was improving the pitting corrosion resistance.
AB - The annealing treatment influence on microstructure evolution and pitting corrosion resistance of UNS S32760 super duplex stainless steel's repeated welds were investigated. The microstructure evolution was observed through a microstructure characterization and ferrite volume fraction measurement, while pitting corrosion resistance was measured by cyclic potentiodynamic polarization. The results reveal that the original weld (OW) indicates a significant imbalance of ferrite-austenite fractions and a presence of intermetallic phase that was declining the pitting corrosion resistance. On the contrary, after 1100 °C annealing the specimens of once-repeated weld (HR1), twice-repeated weld (HR2), and three-time-repeated weld (HR3), the balance among ferrite-austenite fractions gradually restores and the intermetallic phase declines, that was improving the pitting corrosion resistance.
UR - http://www.scopus.com/inward/record.url?scp=85113520262&partnerID=8YFLogxK
U2 - 10.1063/5.0005020
DO - 10.1063/5.0005020
M3 - Conference contribution
AN - SCOPUS:85113520262
T3 - AIP Conference Proceedings
BT - Proceedings of the 3rd International Seminar on Metallurgy and Materials, ISMM 2019
A2 - Darsono, Nono
A2 - Thaha, Yudi Nugraha
A2 - Ridhova, Aga
A2 - Rhamdani, Ahmad
A2 - Utomo, Muhammad Satrio
A2 - Ridlo, Faried Miftahur
A2 - Prasetyo, Mukhlis Agung
PB - American Institute of Physics Inc.
T2 - 3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019
Y2 - 23 October 2019 through 24 October 2019
ER -