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Modelling the sigma phase [PDF]

open access: yesMATEC Web of Conferences, 2013
no ...
Mathieu R.   +7 more
doaj   +3 more sources

Sigma Phase: Nucleation and Growth [PDF]

open access: yesMetals, 2019
Duplex stainless steels (DSS) and superduplex stainless steels (SDSS) are important classes of stainless steels, because they combine the benefits of austenite and ferrite phases.
Gláucio Soares da Fonseca   +2 more
doaj   +2 more sources

Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel [PDF]

open access: yesMaterials Research, 2013
Duplex stainless steels are susceptible to the formation of sigma phase at high temperature which could potentially be responsible for catastrophic service failure of components.
Maria Victoria Biezma   +2 more
doaj   +3 more sources

Sigma Phase in Superduplex Stainless Steel: Formation, Kinetics and Microstructural Path [PDF]

open access: yesMaterials Research, 2017
The superduplex stainless steels (SDSS) are widely used in chemical, oil and gas industries, to pipelines and storage material facilities. In welding process or working in temperature elevated, secondary phases may appear in the form of precipitates, as ...
Gláucio Soares da Fonseca   +4 more
doaj   +2 more sources

Electrochemical characterization of sigma phase in superduplex stainless steels: LSV-KOH as a promising methodology over DL-EPR

open access: yesJournal of Materials Research and Technology, 2023
This work analyzed the volume fraction of the sigma phase in a superduplex stainless steel UNS S32760. Two electrochemical testing methodologies were applied for this purpose.
Marcelo T.G. de Sampaio   +7 more
doaj   +1 more source

Magnetism and magnetic phase diagram of sigma-phase Fe68V32 compound [PDF]

open access: yesIntermetallics, 2021
Abstract The magnetic phase diagram in the H-T coordinates has been determined for σ-Fe68V32 from the ZFC/FC magnetization measurements. The re-entrant character of magnetism, going from paramagnetic through ferromagnetic to spin-glass (SG) states, has been evidenced.
Piotr Konieczny, Stanisław M. Dubiel
openaire   +1 more source

Double Kinetics of Intermetallic Phase Precipitation in UNS S32205 Duplex Stainless Steels Submitted to Isothermal Heat Treatment [PDF]

open access: yesMaterials Research, 2017
One of the most studied deleterious phases in stainless steels is the sigma phase, due to its high potential to decrease the toughness and corrosion resistance of these steels.
Igor Jordão Marques   +3 more
doaj   +1 more source

Precipitation of Sigma and Chi Phases in Cast Standard Duplex Stainless Steel [PDF]

open access: yesArchives of Foundry Engineering, 2023
This work deals with the problem of intermetallic phases in cast standard duplex steel ASTM A890 Gr 4A (generally known as 2205). The investigated steel was subjected to isothermal heat treatment in the range from 595 °C to 900 °C and in the duration ...
M. Myška   +4 more
doaj   +1 more source

Magnetic and Thermoelectric Detection of Sigma Phase in 2507 Duplex Stainless Steel

open access: yesCrystals, 2022
Duplex stainless steel has significantly broadened the range of applications of stainless steel. They have a dual-phase microstructure containing ferrite and austenite at approximately a 50–50% phase ratio.
István Mészáros   +2 more
doaj   +1 more source

INFLUENCE OF SIGMA PHASE ON GENERAL CORROSION OF AUSTENITIC STAINLESS STEEL

open access: yesJournal of Sustainable Technologies and Materials, 2022
Austenitic stainless steel is mostly used at high temperatures. It is known that during heating of the austenitic stainless steel with increasing temperature and time of annealing a microstructure is changed i.e.
Amna Hodžić   +5 more
doaj   +1 more source

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