2020
DOI: 10.3390/ma13071613
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Influence of Electropulsing Treatments on Mechanical Properties of UNS S32750 Duplex Stainless Steel

Abstract: Prestrained at 5% and 15% duplex stainless steel UNS S32750 specimens have been subjected to electropulsing treatments with current density of 100 A/mm2 and 200 A/mm2 and 100 and 500 pulses for each current density value. Corrosion tests, X-ray diffraction, microhardness and residual stresses were collected before and after the electropulsing treatments. Tensile tests were performed after the electropulsing treatments in order to compare the mechanical response to reference tensile tests performed before pulsi… Show more

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Cited by 24 publications
(5 citation statements)
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“…Those phases are present in almost equal volume fraction. However, they can be embrittled, have their good corrosion properties affected, and the working temperature limited to 350 • C by a secondary phase precipitation, such as σ (sigma) or χ (chi) and other particles or phases such as Cr 2 N (chromium nitrides) or α' (alpha prime) 27,28 . Duplex stainless-steel passivation layer is stabilized by chromium and the nickel chemical content 29,30 .…”
Section: Introductionmentioning
confidence: 99%
“…Those phases are present in almost equal volume fraction. However, they can be embrittled, have their good corrosion properties affected, and the working temperature limited to 350 • C by a secondary phase precipitation, such as σ (sigma) or χ (chi) and other particles or phases such as Cr 2 N (chromium nitrides) or α' (alpha prime) 27,28 . Duplex stainless-steel passivation layer is stabilized by chromium and the nickel chemical content 29,30 .…”
Section: Introductionmentioning
confidence: 99%
“…(iii) The electromagnetic field can produce a field-induced plastic effect and improve the plasticity of the material. Some studies [33,[36][37][38][39] find that the field-induced plasticity effect generated by the interaction among the electromagnetic field, dislocations, residual stress, and grain boundaries can improve plasticity, reduce the processing resistance of metal materials, and improve formability.…”
Section: Introductionmentioning
confidence: 99%
“…Here, we consider S32750 duplex stainless steel (W. 1.4410) used for dynamically loaded components in the chemical and petrochemical industries, as well as in aeronautical engineering more recently. It is often used in aggressive corrosion environments with service temperature limits below 350 °C [ 13 ]. Duplex alloy is a descriptor of an alloy where two phases are present in significant quantities, as in the case of basic duplex stainless steel made of a ferritic/austenitic Fe-Cr-Ni alloy with 30–70% ferrite.…”
Section: Introductionmentioning
confidence: 99%
“…During the 1980s, more highly alloyed duplex grades were developed to withstand more aggressive environments. The so-called superduplex grades contain about 25% Cr, 6–7% Ni, 3–4% Mo, 0.2–0.3% N, 0–2% Cu, and 0–2% W, as in the case of S32750 stainless steel designed for highly corrosive environments [ 13 ].…”
Section: Introductionmentioning
confidence: 99%