Results 1 to 10 of about 904,230 (261)

Sigma Phase: Nucleation and Growth [PDF]

Metals, 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, Priscila Sousa Nilo Mendes, Ana Carolina Martins Silva   +2 more
doaj   +4 more sources

Modelling the sigma phase [PDF]

MATEC Web of Conferences, 2013
no ...
Mathieu R., Dupin N., Crivello J.-C, Joubert J.-M., Yaqoob K., Breidi A., Fiorani J.-M., David N.   +7 more
doaj   +3 more sources

Evolution of sigma phase precipitates in Cu-containing 25Cr–20Ni austenitic stainless steels

Journal of Materials Research and Technology
This study investigated, for the first time, the influence of Cu addition on sigma phase precipitation during aging at 700 °C in recrystallized 25Cr–20Ni austenitic stainless steels containing up to 2.9 wt% Cu.
Gunjick Lee, Heechan Jung, Han Jun Yu, Jung Hun Han, Seok Su Sohn, Jae-Hyeok Shim   +5 more
doaj   +3 more sources

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

Materials 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, Carlos Berlanga, Gorka Argandona   +2 more
doaj   +3 more sources

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

Materials 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, Phelipe Matias de Oliveira, Marília Garcia Diniz, Dimitry Valerievitch Bubnoff, José Adilson de Castro   +4 more
doaj   +2 more sources

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

Journal 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, Anderson B. Furtado, Marcelo D.C. Ignácio, Sérgio S.M. Tavares, Juan M. Pardal, André R. Pimenta, Javier A.C. Velasco, Eduardo A. Ponzio   +7 more
doaj   +1 more source

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

Materials 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, André de Albuquerque Vicente, Jorge Alberto Soares Tenório, Tiago Felipe de Abreu Santos   +3 more
doaj   +1 more source

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

Archives 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, P. Bořil, V. Krutiš, V. Kaňa, A. Zádĕra   +4 more
doaj   +1 more source

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

Crystals, 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, Bálint Bögre, Péter János Szabó   +2 more
doaj   +1 more source

INFLUENCE OF SIGMA PHASE ON GENERAL CORROSION OF AUSTENITIC STAINLESS STEEL

Journal 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, Dejana Kasapović, Almaida Gigović-Gekić, Farzet Bikić, Raza Sunulahpašić, Hasan Avdušinović   +5 more
doaj   +1 more source