2014
DOI: 10.1016/j.matchar.2014.03.017
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Microstructure and mechanical properties of duplex stainless steel subjected to hydrostatic extrusion

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Cited by 29 publications
(18 citation statements)
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“…A grain size of about 150 nm in ferrite and 70 nm in austenite was obtained for duplex stainless steel subjected to hydrostatic extrusion [6]. Meanwhile, the distribution of plastic strains was heterogeneous between two phases and the ferrite could accommodate greater plastic strain than austenite during tensile testing [7].…”
Section: Introductionmentioning
confidence: 99%
“…A grain size of about 150 nm in ferrite and 70 nm in austenite was obtained for duplex stainless steel subjected to hydrostatic extrusion [6]. Meanwhile, the distribution of plastic strains was heterogeneous between two phases and the ferrite could accommodate greater plastic strain than austenite during tensile testing [7].…”
Section: Introductionmentioning
confidence: 99%
“…This level of mechanical strength was reached in an experiment that involved the hydrostatic extrusion process with a true deformation of 1.4 in DSS steel with 0.3% C; 22% Cr; 5% Ni and 3.0% Mo. In this case, the tensile strength of 1370 MPa was reached, but with only 5% of total elongation 26 .…”
Section: Resultsmentioning
confidence: 91%
“…Since the probability of generating the stacking faults is very small, the screw dislocations can cross-slip, allowing accommodating large deformations with a small change in the orientation of their crystallographic structure. Thus, the grain refinement is achieved by the successive subdivision of the dislocations walls [26][27][28][29] . Figure 7 represent the engineering stress-strain curves for AR and WR samples.…”
Section: Resultsmentioning
confidence: 99%
“…A fase ferrítica, cúbica de corpo centrado, se deforma pelo escorregamento de deslocações. Já a austenita, cúbica de face centrada, se deforma tanto pelo escorregamento planar de deslocações, quanto pelo efeito TRIP e também por maclação mecânica TWIP (Twinning Induced Plasticity) [12][13][14]. Neste trabalho, tiras de aço inoxidável duplex UNS S32205 foram processadas por laminação a morno e recristalizadas por recozimento isotérmico a 1050°C durante 300 s. A primeira condição examinada corresponde à fornecida pelo fabricante, i.e., laminada a quente industrialmente e recozida a 1100°C por 30 min, e outras duas condições correspondem às amostras que foram laminadas a morno a 600°C com 60% e 80% de redução, e, em seguidas, recozidas.…”
Section: Introductionunclassified