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Effect of solution ...
Effect of solution annealing temperature on the localised corrosion behaviour of a modified super austenitic steel produced in an open-air atmosphere
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- Ramirez, Jesus. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.
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- Berrio, E. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.
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- Alvarado Ávila, M. I. (författare)
- KTH,Tillämpad fysik
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- Field, D. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.
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- Onate, A. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.
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- Sanhueza, J. P. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.
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- Montoya, L. F. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.;Univ Concepcion, Fac Engn, Dept Chem Engn, Concepcion, Chile.
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- Melendrez, M. F. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.;Unidad Desarrollo Tecnol, 2634 Ave Cordillera,Parque Ind Coronel,Box 4051, Concepcion 4191996, Chile.
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- Rojas, D. (författare)
- Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile.
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Univ Concepcion, Fac Engn, Dept Mat Engn DIMAT, Interdisciplinary Grp Appl Nanotechnol GINA, Edmundo Larenas 315, Concepcion 4070415, Chile Tillämpad fysik (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
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Ingår i: Materials Chemistry and Physics. - : Elsevier BV. - 0254-0584 .- 1879-3312. ; 299
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Two annealing heat treatments were investigated regarding localised corrosion behaviour on Nb and Mn-bearing super austenitic stainless steel. The material was designed based on physical metallurgical principles supported by Thermo-Calc modelling and was produced in an open-air atmosphere based on pre-sorted SS scrap plus ferroalloys elements. The production method aims for metal waste valorisation considering small foundries without an atmosphere-controlled process. Secondary phases at annealing temperatures were experimentally analysed by different microstructural characterisation methods and correlated by the Thermo-Calc modelling. In addition, electrochemical techniques and SKPFM were used to study the relationship between observed phases and localised corrosion performance. As the main results, a good correlation was observed between Thermo-Calc calculations and the microstructural characterisation. In particular, M23C6 carbides, sigma phase, and Nb-MX were identified for the sample treated at 1120 degrees C, while for the sample treated at 1180 degrees C, sigma phase and Nb-MX were identified, no M23C6 were detected. As regards localised corrosion behaviour, the M23C6 carbides and a phase for sample 1120 degrees C generated Cr and Mo depletion zones and diminished the corrosion resistance in corrosive aqueous solutions. In the case of sample 1180 degrees C, the a-phase with a smaller size and volume fraction than sample 1120 degrees C was observed, leading to a more uniform Cr and Mo distribution through the microstructure, obtaining high corrosion resistance and showing promising corrosion behaviour, similar to commercial SS 254smo considering its production in open-air.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Super austenitic stainless steels
- Thermo-calc
- Sensitisation
- Cyclic polarisation curves
- Solution annealing
- DL-EPR
- SKPFM
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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