Kinetics of the σ Phase Precipitation in Respect of Erosion-corrosion Wear of Duplex Cast Steel

Brodziak-Hyska, A.; Stradomski, Z.; Kolan, C.

doi:10.2478/afe-2014-0004

Cited by 4 publications

(5 citation statements)

References 5 publications

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“…To densify it close to the theoretical density, in practice cases, a trial-and-error methodology is often carried out to obtain the optimized processing parameters and container geometry, which is highly costly and labor-intensive [15][16][17][18][19]. To address this, a new strategy of "simulation prediction, experimental validation" has demonstrated the advantage of accelerating the discovery of optimized parameters in an efficient and economic manner [20][21][22][23][24][25]. In this research, we provided a case showing the effect of temperature on relative density during HIP.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Metal Powder Densification under Hot Isostatic Pressing

Wang,

Srivatsa,

et al. 2024

Materials

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The consolidation of metal powders is a complex thermomechanical process, and the temperature has a significant effect on the density distribution in the compact. The consolidation process of metal powders with an average particle size of 10 μm, 25 μm, and 50 μm under hot isostatic pressure was simulated by finite element modeling. The distribution and evolution of the relative density after being hot isostatic pressing (HIP) under 1050 °C/130 MPa/4 h, 1150 °C/130 MPa/4 h, and 1250 °C/130 MPa/4 h conditions were simulated, respectively. The experimental data of HIP at 1050 °C/130 MPa/4 h were used to verify the modeling results via the geometric change in the container. The relative density difference between the simulated results and the experimental results at different positions was less than 2%. This methodology called “modeling prediction, experimental validation” can accelerate experimental discovery in an economic manner.

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Section: Introductionmentioning

confidence: 99%

Modeling of Metal Powder Densification under Hot Isostatic Pressing

Wang,

Srivatsa,

et al. 2024

Materials

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“…Unfortunately, besides the presence of the determined amount of ferrite and austenite, the high content of alloy additions favours the precipitation in castings cooled in the mould of many harmful intermetallic phases, carbides and nitrides [1,[8][9][10][11][12]. As presented in papers [1,4,[13][14][15][16][17] the largest decline in usable properties, mainly toughness and the corrosion resistance of duplex cast steel results from precipitation on grains boundaries the brittle σ phase and carbides (Cr, Fe) 23 C 6 and (Cr, Fe) 7 C 3 . As shown in papers [1,4,18] to reduce the amount of these undesirable phases and to obtain a two-phase ferritic-austenitic microstructure for duplex steel castings, the heat treatment of type hyperquenching is used.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Jurczyk,

Wróbel,

Baron

2020

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The paper presents the research results concerning the chromium-nickel-molybdenum duplex cast steel GX2CrNiMoCuN 25-6-3-3 grade. The aim of studies was the description of the influence of hyperquenching temperature T p i.e. 1100, 1125 and 1150℃ on microstructure and mainly mechanical properties i.e. tensile strength UTS, yield strength YS, hardness HB, elongation EL and impact energy KV of duplex cast steel GX2CrNiMoCuN 25-6-3-3 grade. The range of studies included ten melts which were conducted in foundry GZUT S.A. Based on the obtained results was confirmed that application of hyperquenching process guarantees the elimination of brittle s phase in the microstructure of studied duplex cast steel. Moreover on the basis of conducted statistical analysis of the researches results is concluded that with the decrease in hyperquenching temperature increases ductility and amount of austenite, while decreases strength and amount of ferrite in studied duplex cast steel GX2CrNiMoCuN 25-6-3-3 grade.

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“…30% iron and slight amounts of nickel and molybdenum. This phase reduces ductility and impact resistance of weld metal and also impairs the corrosion resistance of stainless steels [2][3][4]. The major factors affecting the structure are Creq/Nieq ratio and heat input [5].…”

Section: Introductionmentioning

confidence: 99%

Determining the causes of failure of the distillation column for the esterification of n-butanol with acetic acid

Parzych

Gucwa

2018

MATEC Web Conf.

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The aim of the work is to determine the causes of corrosion of the distillation column from material 1.4571 (316Ti) in which acetic acid was produced. The column underwent a rapid and significant wear in a very short time during exploitation. To determine the causes of the failure, samples for testing were cut out of the components of the used distillation column. In the first test chemical analysis of the individual elements was carried out in order to specify the type of steel out of which they were made. The next step was to examine the structure of these elements and to perform microanalysis of the chemical composition of ferrite and austenite. After the completion and analysis of all necessary tests, conclusions were formulated to explain the causes of material consumption.

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Kinetics of the σ Phase Precipitation in Respect of Erosion-corrosion Wear of Duplex Cast Steel

Cited by 4 publications

References 5 publications

Modeling of Metal Powder Densification under Hot Isostatic Pressing

Modeling of Metal Powder Densification under Hot Isostatic Pressing

Archives of Metallurgy and Materials

Determining the causes of failure of the distillation column for the esterification of n-butanol with acetic acid

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