Study of the recrystallization and crystallographic texture evolution during final annealing of UNS S32304 Lean Duplex stainless steel

Moura, Ariane Neves de; Favarato, L.N.O.; Filho, André Itman; Alcântara, Cláudio Moreira de; Cunha, Marco Antônio da; Oliveira, Tarcísio Reis de; Machado, M.L.P.

doi:10.1016/j.matchar.2017.05.025

Cited by 23 publications

(6 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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%

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

Besharatloo

Carpio

Cabrera

et al. 2020

Metals

View full text Add to dashboard Cite

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.

show abstract

Section: Microstructural Characterizationmentioning

confidence: 99%

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

Besharatloo

Carpio

Cabrera

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…Moura et al 58 studies indicated that after full recrystallization of the ferrite phase, its hardness reaches a constant value. Regarding the austenite phase, the hardness tends to decrease continuously as the temperature increase since the higher stored energy acts as a driving force for the recrystallization 58 . Malta et al 38 identified the attenuation of the hardness with an increase in the ferrite volume fraction by increasing the annealing temperature.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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

et al. 2022

View full text Add to dashboard Cite

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.

show abstract

“…There are also other contradictions in the subsequent literature. Though it is generally accepted 37,38,70 that recrystallization annealing reduces the crystallographic texture and texture induced anisotropy in both phases, there appears to be a general disagreement about the nature of recrystallization and relative kinetics in the respective phases. For example, Reick et al 36 claimed more discontinuous recrystallization in the austenite phase-though ferrite recrystallized faster.…”

Section: = -mentioning

confidence: 99%

“…These stages often overlap, though a large difference in annealing temperature may activate predominantly thermal recovery and recrystallization plus grain coarsening. 24,25,30,31 Though microstructural evolution during annealing of predominantly single-phase metallic material has been explored extensively, 32,33 comprehensive studies on the softening behavior are noticeably less [34][35][36][37][38] in two-phase duplex stainless steel. In particular, the studies relating the annealing induced microstructural changes with electrochemical responses are rare, 34,39 which provided motivation for the present study.…”

mentioning

confidence: 99%

Role of Recovery and Recrystallization on the Post Cold Work Corrosion Performance in a Super Duplex Stainless Steel

Mondal

Bonagani

Raut

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

Cold rolled super duplex stainless steel (SDSS) were subjected to recovery (300 °C) and recrystallization (1020 °C) annealing. Annealing related microstructural changes were quantified with microtexture and phase-specific micro-hardness. Subsequent electrochemical characterization included potentiodynamic anodic polarization tests and Mott-Schottky analysis. It was established, for both single and two-phase specimens, that extensive recovery did not affect the electrochemical behavior, while the shortest recrystallization led to significant improvements in corrosion resistance. Improvements in corrosion performance of cold rolled SDSS was thus possible only through recrystallization, and associated removal of large lattice curvatures in the metallic substrate and reduced defect densities in the protective oxide film.

show abstract

Study of the recrystallization and crystallographic texture evolution during final annealing of UNS S32304 Lean Duplex stainless steel

Cited by 23 publications

References 32 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

Role of Recovery and Recrystallization on the Post Cold Work Corrosion Performance in a Super Duplex Stainless Steel

Contact Info

Product

Resources

About