Effects of Cathodic Protection on Duplex Stainless Steels in Seawater

Francis, Roger; Byrne, Glenn; Warburton, G.

doi:10.5006/1.3280465

Cited by 39 publications

(25 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to other steels, hydrogen may be introduced into superduplex stainless steels by cathodic protection (Francis et al, 1997), galvanic coupling to less noble materials, from hydrogen sulphide during handling of crude oil or during welding processes (Wessman and Pettersson, 2000). It is well known that once inside the metal, hydrogen can cause embrittlement, leading to reduced crack propagation resistance and premature failure.…”

Section: Hydrogen Embrittlementmentioning

confidence: 99%

Cracking in high performance superduplex stainless steel welds

Comer

2009

Weld Cracking in Ferrous Alloys

View full text Add to dashboard Cite

Section: Hydrogen Embrittlementmentioning

confidence: 99%

Cracking in high performance superduplex stainless steel welds

Comer

2009

Weld Cracking in Ferrous Alloys

View full text Add to dashboard Cite

“…This mixed phenomenon in FCAW-BM, with few dimples and QC, was seen at potentials of −875, −900, and −1000 mV. The fracture mode at −1000 mV in the range of hydrogen embrittlement included considerable QC, particularly in the as-welded specimens [16][17][18]. On the other hand, only dimples in the post-weld specimens heat treated at 550 o C for the FCAW-BM, FCAW-HAZ, and SMAW-HAZ were seen at −770, −850, and −850 mV, respectively.…”

Section: Evaluation Of Mechanical and Electrochemical Properties At Cmentioning

confidence: 99%

Electrochemical study of hydrogen embrittlement and optimum cathodic protection potential of welded high strength Steel

2005

View full text Add to dashboard Cite

Electrochemical properties and mechanical properties of welded high strength steel were investigated by the slow strain rate test (SSRT) method with an applied constant cathodic potential. There was no correlation between maximum tensile strength, yield strength, stress at failure, and hydrogen embrittlement. However, the elongation, time-to-fracture, and strain-to-failure ratio decreased with shifting potential of the negative direction. Elongation, time-to-fracture, and strain-to-failure ratio for the various welding methods displayed the highest values when the potential was −770 mV regardless of post-weld heat treatment (PWHT) conditions. The elongation, time-to-fracture, and amount of dimples by PWHT were increased. The optimum potential region for cathodic protection without hydrogen embrittlement was observed between −770 and (above) −850 mV (SCE) in the post-weld specimens heat treated at 550 o C and the as-welded specimens.

show abstract

“…35 The severity of embrittlement depends on the amount of hydrogen evolved, the ability of hydrogen to be absorbed into the surface and the diffusion rate into the bulk steel. In many of these applications, the duplex stainless steels are cathodically protected, either by design, or because they are connected to protected steel work.…”

Section: Cathodic Protectionmentioning

confidence: 99%

“…of applied potential on the elongation ratio in SSR tensile tests on a cold worked(34)(35) HRC) superduplex stainless steel (S32760) (after reference16).…”

mentioning

confidence: 99%