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.
|Title of host publication
|Proceedings of the 3rd International Seminar on Metallurgy and Materials, ISMM 2019
|Subtitle of host publication
|Exploring New Innovation in Metallurgy and Materials
|Nono Darsono, Yudi Nugraha Thaha, Aga Ridhova, Ahmad Rhamdani, Muhammad Satrio Utomo, Faried Miftahur Ridlo, Mukhlis Agung Prasetyo
|American Institute of Physics Inc.
|Published - 21 Apr 2020
|3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019 - Tangerang Selatan, Indonesia
Duration: 23 Oct 2019 → 24 Oct 2019
|AIP Conference Proceedings
|3rd International Seminar on Metallurgy and Materials: Exploring New Innovation in Metallurgy and Materials, ISMM 2019
|23/10/19 → 24/10/19