AFM and EBSD combined studies of plastic deformation in a duplex stainless steel

Fréchard, S.; Martin, Frantz; Clément, Ch.; Cousty, J.

doi:10.1016/j.msea.2005.11.047

Cited by 86 publications

(46 citation statements)

References 13 publications

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“…Duplex stainless steels (DSS) are characterized by a biphasic structure, constituting an approximate equal amount of ferrite (α) and austenite (γ). The ferrite phase is responsable for an increased resistance, while the austenite phase ensures the toughness and better corrosion resistance [2][3][4] . At the end of the useful life of a mechanical component it is discarded in deposits or remelted, making this cycle costly for industry, while the discarding brings environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of Duplex Stainless steel (UNS S31803) Powders Obtained by high Energy Milling of Chips with Additions of NbC

Mendonça

Oliveira

et al. 2017

Mat. Res.

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In this study, the high energy mechanical milling was utilized to the production of duplex stainless steel powders from the recycling chips with and without the addition niobium carbide. The effect of milling time and addition carbide on the morphology, particle size and magnetic properties of the powders was investigated. The utilization of the powder metallurgy constitute an important alternative for the reuse of waste in the industrial sector. The milling was realized using a planetary ball mill for 20 hours at a milling speed of 350 rpm and ball-to-powder weight ratio of 15:1were used, and the (0% and 3 wt. %) niobium carbide (NbC) addition. Scanning electron microscopy and particle distribution analysis were used for characterization of morphology and measure of particle size. Also, to analyze the transformations of phases were investigated using the magnetic characterization and x-ray diffraction. The results indicated that the addition of niobium carbide results in the reduction of the particle size of steel of the order of 20%, besides the reduces the transformation of austenite into strain induced martensitic phase.

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Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of Duplex Stainless steel (UNS S31803) Powders Obtained by high Energy Milling of Chips with Additions of NbC

Mendonça

Oliveira

et al. 2017

Mat. Res.

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“…The differences in behavior of each phase and the strain heterogeneities were studied by other authors using various techniques (SEM, TEM, EBSD, AFM) [10][11][12]. Strain heterogeneities between phases in duplex stainless steel were examined experimentally during in situ test using the EBSD technique and Digital Image Correlation (DIC) [13]. The obtained results were compared with simulations made using finite elements method (FEM) by Bartali et al [9].…”

Section: Introductionmentioning

confidence: 99%

Investigation of plastic deformation heterogeneities in duplex steel by EBSD

Wroński

Tarasiuk

Bacroix

et al. 2012

Materials Characterization

104

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. A B S T R A C TAn EBSD analysis of a duplex steel (austeno-ferritic) deformed in tension up to fracture is presented. The main purpose of the paper is to describe, qualitatively and quantitatively, the differences in the behavior of the two phases during plastic deformation. In order to do so, several topological maps are measured on the deformed state using the electron backscatter diffraction technique. Distributions of grain size, misorientation, image quality factor and texture are then analyzed in detail.

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“…Para que essas proporções sejam atingidas, os aços duplex são submetidos à laminação a quente ou forjamento, laminação a frio, seguida de um recozimento para recristalização [5,6]. Quando comparados aos aços ferríticos e austeníticos, os AID's exibem melhores propriedades mecânicas e corrosivas, sendo utilizados nas indústrias petroquímica, químicas, óleo e gás, papel e celulose, naval e nuclear, as quais requerem boa combinação dessas propriedades [7][8][9][10]. Os aços duplex apresentam forte tendência à formação de fases secundárias quando expostos a altas temperaturas por tempos prolongados.…”

Section: Introductionunclassified

Efeito Da Temperatura De Recozimento Na Precipitação Da Fase Sigma No Aço Inoxidável Duplex Uns 31803

Maria¹,

Dias²,

Alves³

et al. 2017

Anais Do Congresso Anual Da ABM

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ResumoO aço inoxidável duplex combina as propriedades mecânicas da ferrita à resistência à corrosão da austenita, sendo muito utilizado em aplicações industriais que requerem um bom desempenho quanto a essas propriedades. Quando esse aço é submetido a ciclos térmicos, fases secundárias podem se precipitar, o que causa a deterioração de suas propriedades. Dentre as fases que podem surgir, a fase sigma é a de maior relevância. O presente trabalho tem como objetivo avaliar e quantificar a precipitação da fase sigma quando o aço duplex UNS 31803 é submetido ao recozimento em diferentes temperaturas. Para essa análise foram utilizados a microscopia óptica e eletrônica, difração por elétrons retroespalhados, difração de raios -X, e espectometria de raios -X por dispersão em energia. Observou -se a presença da fase sigma em três das quatro condições adotadas no trabalho. A presença mais acentuada da fase foi observada na condição em que a velocidade de precipitação é máxima. Palavras-chave: Aço inoxidável duplex; Fase sigma; Fases intermetálicas. EFFECT OF ANNEALING TEMPERATURE ON THE PRECIPITATION OF SIGMA PHASE IN DUPLEX STAINLESS STEEL UNS 31803 AbstractThe duplex stainless steel combines the mechanical properties of ferrite and the corrosion resistance of austenite, widely used in industrial applications that require a good performance in terms of these properties. When this steel is subjected to thermal cycles, secondary phases can precipitate, which causes the deterioration of its properties. The sigma phase is the most relevant between the precipitates which may be formed. The aim of this work is to evaluate and quantify the precipitation of sigma phase when the Duplex UNS 31803 steel is subjected to annealing at different temperatures. For this analysis were used optical and electron microscopy, electron backscattered diffraction, diffraction X -ray spectrometry and X -ray dispersive energy. The sigma phase was observed in three of the four conditions adopted in work. The presence of phase was observed so more pronounced in the condition where the precipitation velocity is maximal.

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AFM and EBSD combined studies of plastic deformation in a duplex stainless steel

Cited by 86 publications

References 13 publications

Structural and Magnetic Properties of Duplex Stainless steel (UNS S31803) Powders Obtained by high Energy Milling of Chips with Additions of NbC

Structural and Magnetic Properties of Duplex Stainless steel (UNS S31803) Powders Obtained by high Energy Milling of Chips with Additions of NbC

Investigation of plastic deformation heterogeneities in duplex steel by EBSD

Efeito Da Temperatura De Recozimento Na Precipitação Da Fase Sigma No Aço Inoxidável Duplex Uns 31803

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