Temat: duplex steel - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Technology of Welding Joints Mixed with Duplex Steel
Autorzy:: Słania, J.
Krawczyk, R.
Masłoń, D.
Powiązania:: https://bibliotekanauki.pl/articles/356618.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: welding
duplex steel
mixed joints
Opis:: Results of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO₂) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 1; 159-168
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical Simulation of Duplex Steel Multipass Welding
Autorzy:: Giętka, T.
Ciechacki, K.
Kik, T.
Powiązania:: https://bibliotekanauki.pl/articles/351268.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: FEM
welding strains
SYSWELD
welding stresses
GMA
duplex steel
Opis:: Analyses based on FEM calculations have significantly changed the possibilities of determining welding strains and stresses at early stages of product design and welding technology development. Such an approach to design enables obtaining significant savings in production preparation and post-weld deformation corrections and is also important for utility properties of welded joints obtained. As a result, it is possible to make changes to a simulated process before introducing them into real production as well as to test various variants of a given solution. Numerical simulations require the combination of problems of thermal, mechanical and metallurgical analysis. The study presented involved the SYSWELD software-based analysis of GMA welded multipass butt joints made of duplex steel sheets. The analysis of the distribution of stresses and displacements were carried out for typical welding procedure as during real welding tests.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 4; 1975-1984
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The effect of alloying method on the structure and properties of sintered stainless steel
Autorzy:: Dudek, A.
Lisiecka, B.
Ulewicz, R.
Powiązania:: https://bibliotekanauki.pl/articles/351870.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: sintered duplex stainless steel
chromium carbide
Opis:: Sintered duplex stainless steels (SDSSs) appear to be very interesting and promising materials that can be used in many industrial sectors. Ferrite improves material strength while austenite increases hardness and corrosion resistance. This study proposes a method to improve functional properties (e.g. hardness and wear resistance) by means of alloying the surface of the sintered duplex steel with Cr₃C₂ + 10% NiAl powder. The results of optical microscope metallography, SEM/EDX, XRD analysis and microhardness and wear resistance measurements are also presented. The surface alloying with Cr₃C₂ is a manufacturing method of surface layer hardening in sintered stainless steels and modification of surface layer properties such as hardness and coefficient of friction.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 1; 281-287
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Environmental Degradation of Dissimilar Austenitic 316L and Duplex 2205 Stainless Steels Welded Joints
Autorzy:: Topolska, S.
Łabanowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/356004.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: duplex steel 2205
austenitic steel 316L
welded joints
stress corrosion cracking (SCC)
hydrogen embrittlement
Opis:: The paper describes structure and properties of dissimilar stainless steels welded joints between duplex 2205 and austenitic 316L steels. Investigations were focused on environmentally assisted cracking of welded joints. The susceptibility to stress corrosion cracking (SCC) and hydrogen embrittlement was determined in slow strain rate tests (SSRT) with the strain rate of 2.2 × 10⁻⁶ s⁻¹. Chloride-inducted SCC was determined in the 35% boiling water solution of MgCl₂ environment at 125°C. Hydrogen assisted SCC tests were performed in synthetic sea water under cathodic polarization condition. It was shown that place of the lowest resistance to chloride stress corrosion cracking is heat affected zone at duplex steel side of dissimilar joins. That phenomenon was connected with undesirable structure of HAZ comprising of large fractions of ferrite grains with acicular austenite phase. Hydrogen assisted SCC tests showed significant reduction in ductility of duplex 2205 steel while austenitic 316L steel remains almost immune to degradation processes. SSR tests of dissimilar welded joints revealed a fracture in the area of austenitic steel.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 4; 2107-2112
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The Influence of Hyperquenching Temperature on Microstructure and Mechanical Properties of Alloy Cast Steel GX2CrNiMoCuN 25-6-3-3
Autorzy:: Jurczyk, P.
Wróbel, T.
Baron, C.
Powiązania:: https://bibliotekanauki.pl/articles/2049633.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: duplex cast steel
heat treatment
mechanical properties
microstructure
Opis:: 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 Tp i.e. 1100, 1125 and 1150°C 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.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 1; 73-80
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Influence of Aging Time at 850°C on Microstructure and Corrosion Resistance of a Cold Rolled 2205 Duplex Stainless Steel
Autorzy:: Assumpção, Raphael França
Fortes Monteiro, Jessica C.
Campideli, Victor Cardoso
Santos, Dagoberto
Sicupira, Dalila C.
Powiązania:: https://bibliotekanauki.pl/articles/28099590.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: duplex stainless steel
aging
corrosion
secondary phases
self-healing
Opis:: The effect of aging time at 850°C for 300 s, 600 s, 1800 s, and 84600 s on the microstructural evolution and corrosion resistance of 2205 duplex stainless steel (DSS) was studied after cold rolling up to 60% of reduction. X-ray diffraction, scanning electron and transmission electron microscopy were used for microstructural characterization. The corrosion behavior was studied by cyclic potentiodynamic polarization (CPP) and electrochemical impedance technique (EIS) in 3.5% NaCl solution and the susceptibility to sensitization was investigated through the double loop electrochemical potentiodynamic reactivation (DL-EPR) test in 0.5 M H2SO4 + 0.1 M NaCl + 0.002 M KSCN solution. After cold working, increasing aging time led to an increase in sigma phase precipitation and a decrease in pitting corrosion resistance. However, the ultrafine microstructure had a beneficial influence on the self-healing effect in Cr and Mo depleted areas with the increasing of aging time, resulting in higher passivation ability. The DSS 2205 type was not susceptible to intergranular corrosion for the aged conditions applied.
Źródło:: Archives of Metallurgy and Materials; 2023, 68, 2; 681--688
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Corrosion Resistance and Mechanical Properties of TIG and A-TIG Welded Joints of Lean Duplex Stainless Steel S82441 / 1.4662
Autorzy:: Brytan, Z.
Niagaj, J.
Powiązania:: https://bibliotekanauki.pl/articles/354977.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: lean duplex stainless steel
TIG
pitting corrosion
ASTM G48
Opis:: This paper presents results of pitting corrosion resistance of TIG (autogenous and with filler metal) and A-TIG welded lean duplex stainless steel S82441/1.4662 evaluated according to ASTM G48 method, where autogenous TIG welding process was applied using different amounts of heat input and shielding gases like pure Ar and Ar+N2 and Ar+He mixtures. The results of pitting corrosion resistance of the welded joints of lean duplex stainless steel S82441 were studied in as weld conditions and after different mechanical surface finish treatments. The results of the critical pitting temperature (CPT) determined according to ASTM G48 at temperatures of 15, 25 and 35°C were presented. Three different surface treatment after welding were applied: etching, milling, brushing + etching. The influence of post weld surface treatment was studied in respect to the pitting corrosion resistance, basing on CPT temperature. Research on TIG welding of lean duplex stainless steel S82441/1.4662 showed a clear influence of the applied shielding gas mixtures, where the addition of 5 to 15% N2 to Ar virtually no effect on the level of resistance to pitting corrosion, only 5% N2 addition has a positive effect, while use of a mixture of 50% Ar + 50% He compared with welding at 100% Ar atmosphere, can significantly reduce the resistance to pitting corrosion. Definite good results were obtained during TIG welding with the participation of activation flux (A-TIG). The weld surface of lean duplex stainless S82441/1.4662 obtained in A-TIG welding without the addition of filler metal has a much lower tendency to pitting corrosion than traditional welds made by TIG method. Pitting corrosion resistance of welds made by A-TIG improved with the increase of the heat input in the tested range of welding current 100-200 A. It was also found that the intensity of the occurrence of pitting does not affect the method of cleaning welds after welding, but the mechanical removal of a thin surface layer of metal significantly reduces their intensity.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 2A; 771-784
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Physical and Numerical Modeling of Duplex Cast Steel Thin-Walled Castings
Autorzy:: Stradomski, G.
Nadolski, M.
Zyska, A.
Kania, B.
Rydz, D.
Powiązania:: https://bibliotekanauki.pl/articles/351674.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: duplex cast steel
centrifugal casting
gravity casting
thin-walled castings
Opis:: The paper, which is a summary and supplement of previous works and research, presents the results of numerical and physical modeling of the GX2CrNiMoCuN25-6-3 duplex cast steel thin-walled castings production. To obtain thin-walled castings with wall in the thinnest place even below 1 mm was used the centrifugal casting technology and gravity casting. The analyzed technology (centrifugal casting) enables making elements with high surface quality with reduced consumption of batch materials and, as a result, reducing the costs of making a unitary casting. The idea behind the production of cast steel with the use of centrifugal technology was to find a remedy for the problems associated with unsatisfactory castability of the tested alloy. The technological evaluation of the cast construction was carried out using the Nova Flow & Solid CV 4.3r8 software. Numerical simulations of crystallization and cooling were carried out for a casting without a gating system and sinkhead located in a mold in accordance with the pouring position. It was assumed that the analyzed cast will be made in the sand form with dimensions 250×250×120 mm.
Źródło:: Archives of Metallurgy and Materials; 2019, 64, 4; 1449-1456
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Effect of Y2O3 Nanoparticles on Corrosion Study of Spark Plasma Sintered Duplex and Ferritic Stainless Steel Samples by Linear Sweep Voltammetric Method
Autorzy:: Shashanka, R.
Chaira, D.
Kumara Swamy, B. E.
Powiązania:: https://bibliotekanauki.pl/articles/351754.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: duplex stainless steel
pitting corrosion
spark plasma sintering
linear sweep voltammetry
ball milling
Opis:: The microstructure and corrosion properties of spark plasma sintered yttria dispersed and yttria free duplex and ferritic stainless samples were studied. Spark plasma sintering (SPS) was carried out at 1000°C by applying 50 MPa pressure with holding time of 5 minutes. Linear sweep voltammetry (LSV) tests were employed to evaluate pitting corrosion resistance of the samples. Corrosion studies were carried out in 0.5, 1 and 2 M concentration of NaCl and H₂SO₄solutions at different quiet time of 2, 4, 6, 8 and 10 seconds. Yttria dispersed stainless steel samples show more resistance to corrosion than yttria free stainless steel samples. Pitting potential decreases with increase in reaction time from 2 to 10 seconds. Similarly, as concentration of NaCl and H₂SO₄ increases from 0.5 M to 2 M the corrosion resistance decrements due to the availability of more Cl¯ and SO₄²¯ ions at higher concentration.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 2; 749-763
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Effect of Shielding Gas Composition on Geometry and Austenite Formation in Low Power Pulsed Nd:YAG Laser Welded 2205 Duplex Stainless Steel
Autorzy:: Gozarganji, Hajibaba, E.
Farnia, A.
Ebrahimnia, M.
Powiązania:: https://bibliotekanauki.pl/articles/2049428.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: low power pulsed Nd:YAG laser welding
duplex stainless steel
shielding gas
nitrogen
austenite formation
Opis:: This paper presents an investigation into effect of nitrogen content of shielding gas mixture on weld geometry, microstructure and hardness of pulsed laser welded 2205 duplex stainless steel. Full penetration autogenous welding was performed on 2 mm thick plates using a low power pulsed Nd: YAG laser. light and scanning electron microscopy were used to study the resulting microstructures. It is observed that 2 mm full penetrated joint decreases to 1.8 mm by dominating nitrogen in argon-nitrogen mixture. Different morphologies of austenite phase as well as an increase of 8% of its content can be observed in pure nitrogen shielded welds. Average weld grain size in sample which is welded in nitrogen atmosphere stands at approximately 41 μm which is smallerthan that of argon atmosphere which is about 51 μm. Micro-hardness test reveals that hardness values increase from 280 HV in base metal to 307 HV in weld center line and the shielding gas mixture does not significantly influence the weld hardness.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 1; 187-195
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Deformation of ferrite-austenite banded structure in cold-rolled duplex steel
Odkształcenie pasmowej struktury ferrytu i austenitu w walcowanej na zimno stali duplex
Autorzy:: Ryś, J.
Zielińska-Lipiec, A.
Powiązania:: https://bibliotekanauki.pl/articles/355842.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: duplex stainless steel
two-phase banded structure
deformation mechanisms
ferrite and austenite microstructure
rolling textures
Opis:: Duplex type ferritic-austenitic stainless steels develop a specific two-phase banded structure upon thermo-mechanical pre-treatment and subsequent cold-rolling. The band-like morphology of ferrite and austenite imposes different conditions on plastic deformation of both constituent phases in comparison to one-phase ferritic and austenitic steels. In the present research the ingot of a model ferritic-austenitic steel of duplex type, produced by laboratory melt, was subjected to preliminary thermo-mechanical treatment including forging and solution annealing. Afterwards cold-rolling was conducted over a wide deformation range. The investigations comprised examination of ferrite and austenite microstructures by means of optical and transmission electron microscopy and texture measurements after selected rolling reductions. The presented results indicate that deformation mechanisms operating within the bands of both constituent phases are essentially the same as compared to one-phase steels, however their appearance and contribution are changed upon deformation of two-phase banded structure. Different deformation behavior within ferrite-austenite bands in duplex steels, visible especially at higher strains, considerably affects microstructure evolution and in consequence texture formation in both phases.
Podczas wstępnej obróbki cieplno-plastycznej i dalszego walcowania na zimno w nierdzewnych stalach ferrytyczno-austenitycznych typu duplex następuje rozwój charakterystycznej pasmowej struktury dwufazowej. Pasmowa morfologia ferrytu i austenitu stwarza odmienne warunki dla procesu odkształcenia plastycznego obu składowych faz w porównaniu do jednofazowych stali ferrytycznych i austenitycznych. W prezentowanych badaniach wlewek modelowej stali ferrytyczno-austenitycznej typu duplex, uzyskany na drodze wytopu laboratoryjnego, poddano wstępnej obróbce cieplno-plastycznej obejmującej kucie na gorąco i przesycanie. Następnie przeprowadzono walcowanie na zimno w szerokim zakresie deformacji. Badania obejmowały obserwacje mikrostruktury ferrytu i austenitu za pomocą mikroskopii optycznej i transmisyjnej mikroskopii elektronowej oraz pomiary tekstury po wybranych stopniach odkształcenia. Prezentowane wyniki wskazują, ze mechanizmy odkształcenia działające w obszarach obu składowych faz są zasadniczo takie same jak w przypadku stali jednofazowych, jednakże ich udział i znaczenie ulegają istotnym zmianom podczas odkształcenia pasmowej struktury dwufazowej. Odmienny sposób odkształcenia pasm ferrytu i austenitu w stalach duplex, widoczny zwłaszcza w zakresie większych odkształceń, wpływa w istotny sposób na rozwój mikrostruktury a w konsekwencji na tworzenie się tekstury w obu fazach.
Źródło:: Archives of Metallurgy and Materials; 2012, 57, 4; 1042-1053
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The Erosion Resistance and Microstructure Evaluation of Laser Surface Alloyed Sintered Stainless Steels
Autorzy:: Brytan, Z.
Powiązania:: https://bibliotekanauki.pl/articles/355450.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: sintered stainless steel
duplex
laser surface alloying
erosion resistance
Opis:: The sintered stainless steels of different microstructures (austenitic, ferritic and duplex) were laser surface alloyed with hard powders (SiC, Si₃ N₄ ) and elemental alloying powders (Cr, FeCr, FeNi) to obtain a complex steel microstructure of improved properties. Laser surface alloying (LSA) involved different strategies of powder placing: the direct powder feeding to the molten metal pool and filling grooves machined on the sample surface by powder, and then laser surface melting. Obtained microstructures were characterised and summarised, basing on LOM, SEM and XRD analysis. The links between base material properties, like superficial hardness and microhardness, derived microstructures and erosion resistance was described. The LSA conditions and alloying powder placement strategies on erosion resistance was evaluated. The erosion wear is lower for Cr, FeCr, FeNi laser alloying, where powders were dissolved in the steel microstructure, and hard phases were not precipitated. Precipitations of hard phases (carbides, silicides, martensite formation) reduce erosion resistance of SiC alloyed stainless steel. The LSA with Si₃ N₄ works better due to lack of precipitates and formation of a soft and ductile austenitic microstructure. The erosion wear at the impingement angle of 90° is high for hard and therefore brittle surface layers obtained as a result of alloying by hard particles (SiC, Si₃ N₄ ). The softer and ductile austenitic stainless steel resist better than harder ferritic and duplex stainless steel material at studied erodent im pingement angle.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 4; 2039-2049
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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