Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel Grade
Duplex and Super Duplex Stainless Steels are very prone to secondary phases formation related to ferrite decomposition at high temperatures. In the present paper the results on secondary phase precipitation in a 2510 Duplex Stainless Steel, heat-treated in the temperature range 850–1050 °C for 3–30...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/7/967 |
| _version_ | 1797562150861930496 |
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| author | Irene Calliari Marco Breda Claudio Gennari Luca Pezzato Massimo Pellizzari Andrea Zambon |
| author_facet | Irene Calliari Marco Breda Claudio Gennari Luca Pezzato Massimo Pellizzari Andrea Zambon |
| author_sort | Irene Calliari |
| collection | DOAJ |
| description | Duplex and Super Duplex Stainless Steels are very prone to secondary phases formation related to ferrite decomposition at high temperatures. In the present paper the results on secondary phase precipitation in a 2510 Duplex Stainless Steel, heat-treated in the temperature range 850–1050 °C for 3–30 min are presented. The precipitation starts at grain boundaries with a consistent ferrite transformation for very short times. The noses of the Time–Temperature–Precipitation (TTP) curves are at 1000 °C for σ-phase and at 900 °C for χ-phase, respectively. The precipitation sequence involves a partial transformation of χ into σ, as previously evidenced in 2205 and 2507 grades. Furthermore, the experimental data were compared to the results of Thermo-Calc calculations. Understanding and ability to predict phase stability in 2510 duplex stainless steel is a key factor to design optimal welding processes that avoid any secondary phase precipitation in the weld bead as well as in the heat-affected zone. |
| first_indexed | 2024-03-10T18:24:25Z |
| format | Article |
| id | doaj.art-1f1e8ad207744932a613b9a49276ae68 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T18:24:25Z |
| publishDate | 2020-07-01 |
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| series | Metals |
| spelling | doaj.art-1f1e8ad207744932a613b9a49276ae682023-11-20T07:06:00ZengMDPI AGMetals2075-47012020-07-0110796710.3390/met10070967Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel GradeIrene Calliari0Marco Breda1Claudio Gennari2Luca Pezzato3Massimo Pellizzari4Andrea Zambon5Department of Industrial Engineering, University of Padova, Via Marzolo, 9, 35131 Padova, ItalyUnilab Laboratori Industriali S.r.l., Via Umbria 22, 35043 Monselice (PD), ItalyDepartment of Industrial Engineering, University of Padova, Via Marzolo, 9, 35131 Padova, ItalyDepartment of Industrial Engineering, University of Padova, Via Marzolo, 9, 35131 Padova, ItalyDepartment of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, ItalyDepartment of Management and Engineering, University of Padua, Stradella S. Nicola 3, 36100 Vicenza, ItalyDuplex and Super Duplex Stainless Steels are very prone to secondary phases formation related to ferrite decomposition at high temperatures. In the present paper the results on secondary phase precipitation in a 2510 Duplex Stainless Steel, heat-treated in the temperature range 850–1050 °C for 3–30 min are presented. The precipitation starts at grain boundaries with a consistent ferrite transformation for very short times. The noses of the Time–Temperature–Precipitation (TTP) curves are at 1000 °C for σ-phase and at 900 °C for χ-phase, respectively. The precipitation sequence involves a partial transformation of χ into σ, as previously evidenced in 2205 and 2507 grades. Furthermore, the experimental data were compared to the results of Thermo-Calc calculations. Understanding and ability to predict phase stability in 2510 duplex stainless steel is a key factor to design optimal welding processes that avoid any secondary phase precipitation in the weld bead as well as in the heat-affected zone.https://www.mdpi.com/2075-4701/10/7/967duplex stainless steelsisothermal heat treatmentsecondary phase precipitationTTP curves |
| spellingShingle | Irene Calliari Marco Breda Claudio Gennari Luca Pezzato Massimo Pellizzari Andrea Zambon Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel Grade Metals duplex stainless steels isothermal heat treatment secondary phase precipitation TTP curves |
| title | Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel Grade |
| title_full | Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel Grade |
| title_fullStr | Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel Grade |
| title_full_unstemmed | Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel Grade |
| title_short | Investigation on Solid-State Phase Transformations in a 2510 Duplex Stainless Steel Grade |
| title_sort | investigation on solid state phase transformations in a 2510 duplex stainless steel grade |
| topic | duplex stainless steels isothermal heat treatment secondary phase precipitation TTP curves |
| url | https://www.mdpi.com/2075-4701/10/7/967 |
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