Failure of Standard Duplex Stainless Steel X2CrNiMoN22-5-3 under Corrosion Fatigue in Geothermal Environment: A Recent Study

2021 ◽  
pp. 62-68
Author(s):  
Marcus Wolf ◽  
Anja Pfennig
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Corrosion Fatigue

SANDVIK APM 2327

Alloy Digest ◽  
2018 ◽  
Vol 67 (12) ◽  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Duplex Stainless Steel ◽  
Tensile Properties ◽  
Corrosion Fatigue ◽  
Heat Treating ◽  
Fatigue Performance ◽  
Super Duplex Stainless Steel

Abstract Sandvik APM 2327 is a powder metallurgical hot isostatic pressed product that is a super duplex stainless steel with improved mechanical properties, corrosion resistance, and superior corrosion fatigue performance over conventional duplex grades. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: SS-1299. Producer or source: Sandvik Materials Technology.

Corrosion Fatigue Performance of Duplex 2507 for Riser Applications

2010 ◽  
Author(s):  
Feng Gui ◽  
Ramgopal Thodla ◽  
Ken Evans ◽  
Carlos Joia ◽  
Ilson Palmieri Baptista
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Crack Growth ◽  
Corrosion Fatigue ◽  
Growth Rates ◽  
High Strength Steels ◽  
High Strength ◽  
Fatigue Performance ◽  
Partial Pressures ◽  
Crack Growth Rates

Corrosion fatigue performance is of interest for high strength steels in riser applications. This work investigated the corrosion fatigue performance of 2507 duplex stainless steel for use as riser materials in environments containing high partial pressures of carbon dioxide (50–100 bar) and limited quantity of hydrogen sulfide (0–0.12 bar). The procedures developed for controlling oxygen and Fe2+ contamination as well as methods to evaluate the concentration of H2S in the autoclave are presented. The crack growth rates and ΔKth for these materials in the pressure environments were discussed along with procedures to obtain ΔKth, when they were below 5ksi√in. Low crack growth rates in the range of 1×10−8 in/cycle were measured and the effect of sour environments was quantified. The fatigue crack growth rate in sour environments on 2507 duplex stainless steel is a 10x higher than in air.

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