Effect of Pulsed Current on the Microstructure, Mechanical Properties and Corrosion Behavior of Ni-Based Alloy/Super Duplex Stainless Steel Dissimilar Welds

2019 ◽  
Vol 72 (9) ◽  
pp. 2403-2416
Author(s):  
Jalal Kangazian ◽  
Morteza Shamanian
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Corrosion Behavior ◽  
Pulsed Current ◽  
Super Duplex Stainless Steel ◽  
Dissimilar Welds ◽  
Mechanical Properties And Corrosion

Microstructural Evolutions and its Influence on Properties of Super-Duplex Stainless Steel

2010 ◽  
Vol 97-101 ◽  
pp. 656-659 ◽  
Author(s):  
Ying Han ◽  
De Ning Zou ◽  
Hong Hong Yao ◽  
Wei Zhang ◽  
Jun Hui Yu
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Energy Spectrum ◽  
Duplex Stainless Steel ◽  
Aging Time ◽  
Aging Temperature ◽  
Super Duplex Stainless Steel ◽  
Σ Phase ◽  
Mechanical Properties And Corrosion

Color-optical microscopy, energy spectrum analysis, hardness measuring, tensile and corrosion testing were conducted to investigate characteristics of microstructure, mechanical properties and corrosion resistance of S32750 super-duplex stainless steel aged at 850～920°C. The results indicate that with the increase of aging temperature and aging time the content of σ phase increases, while the ferrite content decreases. The forming and growing of σ phase obtained during aging causes an increase in hardness and a reduction in ductility of the aged steel. Moreover, increasing aging time the corrosion resistance reduces, owing to a new formed austenite occurs.

Corrosion Resistance of Dissimilar GTA Welds of Pipeline Steel and Super Duplex Stainless Steels in Synthetic Brine

CORROSION ◽  
10.5006/3746 ◽  
2021 ◽  
Author(s):  
Víctor Vargas ◽  
Apolinar Albiter-Hernandez ◽  
Marco Dominguez Aguilar ◽  
Gerardo Altamirano-Guerrero ◽  
Cuahtemoc Maldonado
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Duplex Stainless Steel ◽  
Pipeline Steel ◽  
Localized Corrosion ◽  
Nickel Wire ◽  
Super Duplex Stainless Steel ◽  
Gas Tungsten Arc ◽  
Dissimilar Welds ◽  
Super Duplex Stainless Steels

The effect of weld passes and single V grove designs, on the corrosion resistance of dissimilar welds of a low alloy steel and a super-duplex stainless steel, was studied in synthetic brine. Welds were manufactured in argon by gas tungsten arc (GTA) technique and joined by a high nickel wire of super-duplex stainless steel. Samples of weld regions were characterized by composition scans, electrochemical measurements, micro-hardness and scanning electron microscopy. In X52/ER2594, a transition region (TR) of grain boundaries type II and a band of martensite were formed. The base metal of X52 underwent the highest corrosion rate and localized corrosion occurred in the heat affected zone. Interface ER2594/25Cr7Ni and 25Cr7Ni showed the presence of pitting near intermetallics.

scholarly journals Microstructure and mechanical properties of friction stir welded 8 mm pipe SAF 2507 super duplex stainless steel

2019 ◽  
Vol 8 (1) ◽  
pp. 243-249 ◽  
Author(s):  
Rafael Arthur Reghine Giorjão ◽  
Victor Ferrinho Pereira ◽  
Maysa Terada ◽  
Eduardo Bertoni da Fonseca ◽  
Ricardo Reppold Marinho ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Super Duplex Stainless Steel ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties
Sign in / Sign up

Export Citation Format

Share Document