Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steel
Stainless steels subjected to constant load at high temperature, such as under creep conditions, are known to develop microstructural changes including precipitation of distinct phases. The present work investigated the quantitative precipitation process in an AISI 310 stainless steel creep-tested a...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542300409X |
| _version_ | 1797858739961724928 |
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| author | Julianna Magalhaes Garcia Ana Carolina Accioly Monteiro Andrey de Moraes Barcelos Casanova Noemi Raquel Checca Huaman Sergio Neves Monteiro Luiz Paulo Brandao |
| author_facet | Julianna Magalhaes Garcia Ana Carolina Accioly Monteiro Andrey de Moraes Barcelos Casanova Noemi Raquel Checca Huaman Sergio Neves Monteiro Luiz Paulo Brandao |
| author_sort | Julianna Magalhaes Garcia |
| collection | DOAJ |
| description | Stainless steels subjected to constant load at high temperature, such as under creep conditions, are known to develop microstructural changes including precipitation of distinct phases. The present work investigated the quantitative precipitation process in an AISI 310 stainless steel creep-tested at 650, 675 and 700 °C under a constant load corresponding to a stress of 100 MPa. The microstructural evolution was evaluated by transmission electron and scanning electron microscopies as well as X-ray diffraction and microhardness. Even after a short time of 2 h at 675 °C, Cr23C6 precipitates were nucleated inside grains. After 140 h of creep test at 700 °C, both Cr23C6 and sigma phase were found in the grain boundaries. A quantitative analysis revealed that sigma phase emerged with 2.4 vol.% at 675 °C after 22 h to an increasing volume of 15.0 vol.% at 650 °C. A microhardness increase was associated with the presence of Cr23C6 and sigma phase. After 1231 h at 650 °C a microhardness decrease was attributed to coalescence and growth of Cr23C6 precipitates. |
| first_indexed | 2024-04-09T21:18:15Z |
| format | Article |
| id | doaj.art-3fdd2c2d54ce4b1ab6c00c832508b279 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:18:15Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-3fdd2c2d54ce4b1ab6c00c832508b2792023-03-28T06:48:57ZengElsevierJournal of Materials Research and Technology2238-78542023-03-012359535966Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steelJulianna Magalhaes Garcia0Ana Carolina Accioly Monteiro1Andrey de Moraes Barcelos Casanova2Noemi Raquel Checca Huaman3Sergio Neves Monteiro4Luiz Paulo Brandao5Military Institute of Engineering - IME, Materials Science Program, Praça General Tibúrcio 80, Urca, Rio de Janeiro, 22290-270, BrazilMilitary Institute of Engineering - IME, Materials Science Program, Praça General Tibúrcio 80, Urca, Rio de Janeiro, 22290-270, BrazilMilitary Institute of Engineering - IME, Materials Science Program, Praça General Tibúrcio 80, Urca, Rio de Janeiro, 22290-270, BrazilBrazilian Center for Physics Research, CBPF, Dr. Xavier Sigaud, 150, Urca, Rio de Janeiro, 22290-180, BrazilMilitary Institute of Engineering - IME, Materials Science Program, Praça General Tibúrcio 80, Urca, Rio de Janeiro, 22290-270, Brazil; Corresponding author.Military Institute of Engineering - IME, Materials Science Program, Praça General Tibúrcio 80, Urca, Rio de Janeiro, 22290-270, BrazilStainless steels subjected to constant load at high temperature, such as under creep conditions, are known to develop microstructural changes including precipitation of distinct phases. The present work investigated the quantitative precipitation process in an AISI 310 stainless steel creep-tested at 650, 675 and 700 °C under a constant load corresponding to a stress of 100 MPa. The microstructural evolution was evaluated by transmission electron and scanning electron microscopies as well as X-ray diffraction and microhardness. Even after a short time of 2 h at 675 °C, Cr23C6 precipitates were nucleated inside grains. After 140 h of creep test at 700 °C, both Cr23C6 and sigma phase were found in the grain boundaries. A quantitative analysis revealed that sigma phase emerged with 2.4 vol.% at 675 °C after 22 h to an increasing volume of 15.0 vol.% at 650 °C. A microhardness increase was associated with the presence of Cr23C6 and sigma phase. After 1231 h at 650 °C a microhardness decrease was attributed to coalescence and growth of Cr23C6 precipitates.http://www.sciencedirect.com/science/article/pii/S223878542300409XAustenitic steelsAging by creepCr23C6Sigma phase |
| spellingShingle | Julianna Magalhaes Garcia Ana Carolina Accioly Monteiro Andrey de Moraes Barcelos Casanova Noemi Raquel Checca Huaman Sergio Neves Monteiro Luiz Paulo Brandao Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steel Journal of Materials Research and Technology Austenitic steels Aging by creep Cr23C6 Sigma phase |
| title | Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steel |
| title_full | Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steel |
| title_fullStr | Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steel |
| title_full_unstemmed | Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steel |
| title_short | Microstructural analysis of phase precipitation during high temperature creep in AISI 310 stainless steel |
| title_sort | microstructural analysis of phase precipitation during high temperature creep in aisi 310 stainless steel |
| topic | Austenitic steels Aging by creep Cr23C6 Sigma phase |
| url | http://www.sciencedirect.com/science/article/pii/S223878542300409X |
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