Development of EPR technique for the control of cast alloys

Cètre, Y.; Eichner, P.

doi:10.1002/1521-4176(200101)52:1<20::aid-maco20>3.0.co;2-m

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…The new parameters are 2) to detect TiC carbides and Ti x S sulfides, involved the use of 2.5M H 2 SO 4 at 70'C in N 2 , and polarization scans at 9 V/h [11]. A number of refinements and other procedures were developed over the years, particularly in France, Czechoslovakia, USA, USSR, Japan, China and India, concerning comparisons of EPR with anodic polarization and constant potential etching [59]; comparability of individual EPR variants [60]; correlation of current ratios [26,60,61]; a recommendation for double loop EPR standard [62]; modified single loop EPR evaluation parameters [44]; EPR additives (especially, other than KSCN) [61,[63][64][65]; European round-robin on EPR testing [37]; non-destructive on-site measurements [30,66,67].…”

Section: The Epr Techniquementioning

confidence: 99%

“…These latter steps and contributions and, in particular, the most recent EPR implementation history, are also listed & albeit in a sketchy manner & in the 'history box' overleaf. o duplex stainless steels [28,43], ferritic stainless steels [29] o nickel base alloys [30,[44][45][46][47][48][49][50] o materials for nuclear applications [32,36,46,49,50,51] o alloy microstructure and precipitation [28,30,[33][34][35][36][40][41][42]46,[48][49][50] o improvements of technique, the understanding thereof and modifications thereto [26,29,30,37,38,46,[52][53][54][55] o coatings [56,57] Key Engineering Materials Vols. 261-263 857…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Potentiodynamic Reactivation: Development and Applications of the EPR Test

Číhal

Štefec

Shoji

et al. 2004

KEM

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The EPR test, designed to examine of the susceptibility to nonuniform, primarily intergranular corrosion, ranks among the more successful testing technique developments relating to stainless steels and alloys. One of its numerous advantages is that it lends itself to non-destructive, on-site examination. EPR enjoyed wide expansion over the years since first conceived by Čihal in 1969. Recent EPR measurements tend to focus on (1) double and/or single loop EPR as a modern technique used to establish the resistance of stainless steels and alloys to intergranular corrosion; (2) detecting integranular corrosion (IGC) and intergranular stress corrosion cracking (IGSCC) susceptibility in alloy steels and nickel alloys for nuclear engineering applications; and (3) studies of grain boundary precipitation and other minute local changes to alloy composition and structure.

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Section: The Epr Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical Potentiodynamic Reactivation: Development and Applications of the EPR Test

Číhal

Štefec

Shoji

et al. 2004

KEM

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Modified EPR‐DL method for detection of the spinodal decomposition of 2205 duplex stainless steel

Stoulil

Bystrianský

2011

Materials & Corrosion

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The presented work deals with the possibility of electrochemical detection of the spinodal decomposition of duplex stainless steel's ferritic phase using the modified electrochemical potentiodynamic reactivation double loop (EPR‐DL) method. Specimens of FeCr23Ni6Mo3N (2205) steel exposed to the model low‐temperature annealing at 420 °C for up to 1000 h were used in the experiment. The specimens were evaluated using potentiodynamic curves measurements in chloride solutions and microhardness measurements. Despite hardening the ferritic phase for up to 1 h, a substantial drop of resistance to attack by chlorides was reported only after 1000 h of annealing. The modified EPR‐DL method in 2 M HCl + 0.1 M KSCN solution enables sensitive identification of the spinodal decomposition rate already from early stages.

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Investigations on susceptibility to intergranular corrosion of thermo‐mechanically rolled corrosion‐resistant materials 316L and Alloy 825

Prohaska

Mori

Grill

et al. 2011

Materials & Corrosion

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The influence of parameters of a thermo‐mechanical rolling process on corrosion properties of materials 316L and Alloy 825 was studied by means of the DL‐EPR‐method and a conventional corrosion test. Prior to polarization measurements, optimization of the DL‐EPR‐method was conducted. SEM was used to characterize microstructure and type of attack before and after corrosion testing. A strong correlation between annual corrosion rates and DL‐EPR‐test results was obtained. Due to the low tendency of both alloys to form corrosion‐promoting precipitates, the applicable range of process parameters for both alloys is large and the fabrication process in general is not critical.

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Development of EPR technique for the control of cast alloys

Cited by 6 publications

References 3 publications

Electrochemical Potentiodynamic Reactivation: Development and Applications of the EPR Test

Electrochemical Potentiodynamic Reactivation: Development and Applications of the EPR Test

Modified EPR‐DL method for detection of the spinodal decomposition of 2205 duplex stainless steel

Investigations on susceptibility to intergranular corrosion of thermo‐mechanically rolled corrosion‐resistant materials 316L and Alloy 825

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