Effect of Annealing Temperature on Mechanical Behavior, Pitting Resistance and Grain Boundary Character of a 2304 Lean Duplex Stainless Steel

Malta, Paula Oliveira; Condé, Barbara L.; Assumpção, Raphael França; Perasoli, Daniela Barçante; Sicupira, Dalila Chaves; Santos, Dagoberto Brandão

doi:10.1007/s11661-019-05193-1

Cited by 17 publications

(26 citation statements)

References 53 publications

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“…Figure 11a illustrates the influence of the processing conditions on the hardness of each constitutive phase, as well as on the surface fraction of coarse grains. As expected, H increased dramatically after cold working (CR) in both phases, due to dislocation glide, which in turn promoted an increment in the dislocation densities within the grains causing strain hardening [49,50]. Finally, after the annealing treatment (FP), the hardness value decreases as a consequence of the recovery and recrystallization mechanism within the deformed microstructure formed during the cold rolling step [59][60][61].…”

Section: Small-scale Mechanical Properties Of Each Constitutive Phase: Statistical Analysismentioning

confidence: 59%

“…According to the general literature observation, for DSSs with medium and high N contents (i.e. above 0.15%), the γ phase is harder than the α phase [23,24,[46][47][48][49]. It is clear that the overall hardness of the DSS depends on the volume fraction and intrinsic hardness of each constitutive phase within the bulk material.…”

Section: Microstructural Characterizationmentioning

confidence: 98%

“…It consequently raised the surface fraction of medium-sized grains dramatically. This resulted from the elongation and fragmentation of grains during cold work induced at room temperature [49][50][51]. Finally, significant grain growth took place after the final annealing process in the FP sample, as a result of the recrystallization and recovery of deformed grains of both phases in the CR sample [23,47,[52][53][54][55][56][57].…”

Section: Microstructural Characterizationmentioning

confidence: 99%

“…From the obtained H-maps, it is evidenced that, as expected for the DSS studied, γ is harder than α. This might be related to the lower stacking fault energy (SFE) of γ phase, which in turn, promotes dislocation multiplication and more uniform dislocation distribution [22,23,49,58]. Moreover, it could be associated with the influence of the nitrogen on stabilizing the γ phase and promoting the deformation by planar glide, which strengthens γ grains [24,46].…”

Section: Micromechanical Properties-microstructure Correlation: Cartography Mapsmentioning

confidence: 99%

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Novel Mechanical Characterization of Austenite and Ferrite Phases within Duplex Stainless Steel

Besharatloo

Carpio

Cabrera

et al. 2020

Metals

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The microstructure and micromechanical properties of the constitutive phases of a particular duplex stainless steel in various processing conditions have been characterized. Hardness (H), elastic modulus (E) and H/E cartography maps were obtained by using a high-speed nanoindentation mapping technique. Small-scale H and E evolution at different processing conditions has been investigated by statistical analysis of a large number of nanoindentations (10,000 imprints per sample). Two mechanically distinct phases, ferrite (α) and austenite (γ), were deconvoluted from this dataset using Ulm and Constantinides’ method, with the remaining values assigned to a third mechanical phase linked to composite-like (containing α/γ interphase boundaries) regions. These mechanical property phase assessments were supplemented by overlaying crystallographic phase maps obtained by electron backscattered diffraction. An excellent correlation between microstructure and small-scale mechanical properties was achieved, especially when considering the ratio H/E.

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Section: Small-scale Mechanical Properties Of Each Constitutive Phase: Statistical Analysismentioning

confidence: 59%

Section: Microstructural Characterizationmentioning

confidence: 98%

Section: Microstructural Characterizationmentioning

confidence: 99%

Section: Micromechanical Properties-microstructure Correlation: Cartography Mapsmentioning

confidence: 99%

See 2 more Smart Citations

Novel Mechanical Characterization of Austenite and Ferrite Phases within Duplex Stainless Steel

Besharatloo

Carpio

Cabrera

et al. 2020

Metals

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“…According to Zhang et al 12 annealing a hot rolled 2205 DSS from 975 to 1075 °C for 2h the leads to a more homogeneous microstructure, and the pitting corrosion resistance increases. Malta et al 24 . studied the influence of annealing temperature on pitting resistance of a 2304 DSS.…”

Section: Introductionmentioning

confidence: 98%

Influence of Homogenization and Annealing Temperatures on the Microstructure, Mechanical Properties, and Passive Properties of Cold Rolled 2205 Duplex Stainless Steel

et al. 2022

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The effects of homogenization, cold working, and subsequent annealing treatment were studied on the microstructural evolution, mechanical properties, and passive properties of duplex stainless steel (DSS). A hot-rolled 2205 DSS was subjected to two processing routes. In one, the DSS goes through an extra homogenization step at 1100 °C for 1800 s before cold rolling. After cold deformation (~75%) the specimens were isothermally annealed at 900, 1000, and 1100 °C for 180 s. The microstructure evolution was studied by optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XDR). Mechanical properties were evaluated by microhardness and tensile tests. The electrochemical behaviors were investigated by potentiodynamic measurements, electrochemical impedance spectroscopy (EIS) and Mott-Schottky analysis (MS). Chemical composition of the lowest corrosion resistant passive film was assessed by X-ray photoelectron spectroscopy (XPS). Homogenization before cold rolling lowered strain hardening, slowing the microstructural transformation process. The thermomechanical process did not change the semiconductor type of the passive films. However, grain refinement after annealing improved the corrosion resistance in borate buffer solution. Cold rolling significantly decreased the corrosion resistance. The passive film of the specimen homogenized before cold rolling had the lowest corrosion resistance and high amounts of Cr(OH) 3 and FeO.

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Solution Annealing of Super Duplex Stainless Steel: Correlating Corrosion Performance with Grain Size and Phase-Specific Chemistry

Mondal

Rajagopal

Bonagani

et al. 2020

Metall Mater Trans A

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Effect of Annealing Temperature on Mechanical Behavior, Pitting Resistance and Grain Boundary Character of a 2304 Lean Duplex Stainless Steel

Cited by 17 publications

References 53 publications

Novel Mechanical Characterization of Austenite and Ferrite Phases within Duplex Stainless Steel

Novel Mechanical Characterization of Austenite and Ferrite Phases within Duplex Stainless Steel

Influence of Homogenization and Annealing Temperatures on the Microstructure, Mechanical Properties, and Passive Properties of Cold Rolled 2205 Duplex Stainless Steel

Solution Annealing of Super Duplex Stainless Steel: Correlating Corrosion Performance with Grain Size and Phase-Specific Chemistry

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