The role of retained austenite in hydrogen embrittlement of supermartensitic stainless steel

Solheim, Karl Gunnar; Solberg, Jan Ketil; Walmsley, John C.; Rosenqvist, Fredrik; Bjørnå, Tor Henning

doi:10.1016/j.engfailanal.2013.07.025

Cited by 68 publications

(30 citation statements)

References 12 publications

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“…According to Gesnouin [8], the increase of austenite fraction promoted by double tempering may cause a beneficial decrease in the hydrogen diffusivity, which can increase the resistance to hydrogen embrittlement and stress corrosion cracking. However, as will be explained, Solheim [11] attibuted to reverted austenite an increase of hydrogen embrittlement susceptibility of a 13%Cr supermartensitic steel.…”

Section: Resultsmentioning

confidence: 77%

“…According to Solheim et al [21], M 23 C 6 carbides found in a super 13%Cr steel tempered at 625 C may have a positive effect on the resistance to hydrogen embrittlement by acting as irreversible hydrogen traps. In another work, Solheim et al [11] observed an embrittlement effect of the retained austenite in 13%Cr supermartensitic steels tested by slow strain rate tensile. Zhu et al [22] also found similar results on quenching and partioning treated steel.…”

Section: Specimenmentioning

confidence: 94%

See 1 more Smart Citation

Slow strain rate tensile test results of new multiphase 17%Cr stainless steel under hydrogen cathodic charging

Tavares¹,

Bastos²,

Pardal³

et al. 2015

International Journal of Hydrogen Energy

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Section: Resultsmentioning

confidence: 77%

Section: Specimenmentioning

confidence: 94%

Slow strain rate tensile test results of new multiphase 17%Cr stainless steel under hydrogen cathodic charging

Tavares¹,

Bastos²,

Pardal³

et al. 2015

International Journal of Hydrogen Energy

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“…Actually, C 0 is dominantly dependent on the density of reversible H traps, N T , on the assumption that the irreversible traps could be saturated by the H atoms [38]. According to previous works [39,40,41,42], H traps such as solute atoms, GBs and dislocations were generally regarded as reversible traps, due to their bonding energy being lower than 60 kJ/mol. Among these reversible traps, the solute atoms were assumed to decrease with increasing T t , due to increased precipitation, as shown in Figure 9 and Figure 10.…”

Section: Discussionmentioning

confidence: 99%

Sulfide Stress Cracking Behavior of a Martensitic Steel Controlled by Tempering Temperature

Sun

Wang

et al. 2018

Materials

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A medium-carbon Cr–Mo–V martensitic steel was thermally processed by quenching (Q) at 890 °C and tempering (T) at increasing temperatures from 650 °C to 720 °C and the effect of tempering temperature, Tt, on sulfide stress cracking (SSC) behaviors was estimated mainly via double cantilever beam (DCB) and electrochemical hydrogen permeation (EHP) tests and microstructure characterization. The results indicate that the threshold stress intensity factor for SSC, KISSC, increased with increasing Tt. The overall and local H concentration around the inclusions decreased with increasing Tt, due to reductions in the amounts of solute atoms, grain boundaries and dislocations, which effectively prevented SSC initiation. Also, increasing Tt caused an increased fraction of high-angle boundaries, which evidently lowered the SSC propagation rate by more frequently diverting the propagating direction and accordingly restricted SSC propagation. The overall SSC resistance of this Q&T–treated steel was therefore significantly enhanced.

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“…Traps can include inclusions, cracks, grain boundaries, carbides, microvoids, retained austenite and areas of local plastic deformation where the density of crystal defects (dislocations) is large and hydrogen binding with these crystal defects occurs [14,[16][17][18][19][20][21][22][23][24][25][26]. Traps can be split in terms of their desorption temperature and binding energies.…”

Section: Introductionmentioning

confidence: 99%

Thermal Desorption Analysis of Hydrogen in Non-hydrogen-Charged Rolling Contact Fatigue-Tested 100Cr6 Steel

et al. 2017

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Hydrogen diffusion during rolling contact fatigue (RCF) is considered a potential root cause or accelerator of white etching cracks (WECs) in wind turbine gearbox bearing steels. Hydrogen entry into the bearing steel during operation is thought to occur either through the contact surface itself or through cracks that breach the contact surface, in both cases by the decomposition of lubricant through catalytic reactions and/or tribochemical reactions of water. Thermal desorption analysis (TDA) using two experimental set-ups has been used to measure the hydrogen concentration in non-hydrogen-charged bearings over increasing RCF test durations for the first time. TDA on both instruments revealed that hydrogen diffused into the rolling elements, increasing concentrations being measured for longer test durations, with numerous WECs having formed. On the other hand, across all test durations, negligible concentrations of hydrogen were measured in the raceways, and correspondingly no WECs formed. Evidence for a relationship between hydrogen concentration and either the formation or the acceleration of WECs is shown in the rollers, as WECs increased in number and severity with increasing test duration. It is assumed that hydrogen diffusion occurred at wear-induced nascent surfaces or areas of heterogeneous/patchy tribofilm, since most WECs did not breach the contact surface, and those that did only had very small crack volumes for entry of lubricant to have occurred.

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The role of retained austenite in hydrogen embrittlement of supermartensitic stainless steel

Cited by 68 publications

References 12 publications

Slow strain rate tensile test results of new multiphase 17%Cr stainless steel under hydrogen cathodic charging

Slow strain rate tensile test results of new multiphase 17%Cr stainless steel under hydrogen cathodic charging

Sulfide Stress Cracking Behavior of a Martensitic Steel Controlled by Tempering Temperature

Thermal Desorption Analysis of Hydrogen in Non-hydrogen-Charged Rolling Contact Fatigue-Tested 100Cr6 Steel

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