Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel components
Creep is the main degradation mechanism in steel and superalloy components operating at high temperatures in thermal and nuclear power generation units. Therefore, acquiring creep data during equipment operation is vital for a realistic calculation of the remaining useful life of these un...
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Academia.edu Journals
2024-09-01
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| Series: | Academia Materials Science |
| Online Access: | https://www.academia.edu/124201726/Miniaturized_specimen_creep_testing_an_alternative_method_for_evaluating_the_remaining_service_life_of_CrMo_steel_components |
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| author | Heloisa Cunha Furtado Fernanda Figueiredo Martins dos Santos Leonardo Sales Araújo Levi de Oliveira Bueno |
| author_facet | Heloisa Cunha Furtado Fernanda Figueiredo Martins dos Santos Leonardo Sales Araújo Levi de Oliveira Bueno |
| author_sort | Heloisa Cunha Furtado |
| collection | DOAJ |
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Creep is the main degradation mechanism in steel and superalloy components operating at high temperatures in thermal and nuclear power generation units. Therefore, acquiring creep data during equipment operation is vital for a realistic calculation of the remaining useful life of these units. However, there are severe limitations to obtaining sufficient material for standard-size specimen fabrication and representative sample of the component. Therefore, replacing conventional specimens with small-size specimens, which can be fabricated from a limited amount of material, can facilitate the assessment of power plant components by creep tests without any structural damage. This study aims to compare creep-test results of Cr-Mo ferritic steel using conventional and small-size specimens to assess the effectiveness of using miniaturized specimens for analysis. The results of this study confirm the applicability of miniaturized-specimen creep testing for the reliable estimation of the materials’ remaining life. The results also emphasize the importance of carrying out creep test on miniaturized samples under vacuum, to avoid harmful effects due to the formation of the oxide layer. |
| format | Article |
| id | doaj-art-3238459f792549f193cd04e4941f9ac9 |
| institution | Kabale University |
| issn | 2997-2027 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Academia.edu Journals |
| record_format | Article |
| series | Academia Materials Science |
| spelling | doaj-art-3238459f792549f193cd04e4941f9ac92025-02-10T22:57:06ZengAcademia.edu JournalsAcademia Materials Science2997-20272024-09-011310.20935/AcadMatSci7354Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel componentsHeloisa Cunha Furtado0Fernanda Figueiredo Martins dos Santos1Leonardo Sales Araújo2Levi de Oliveira Bueno3Materials and Metallurgy Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, Brazil.Electrical Research Center (CEPEL), Rio de Janeiro 21941-911, Brazil.Materials and Metallurgy Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, Brazil.STM-Systems for Testing of Materials, São Carlos Federal University, São Paulo 13566-600, Brazil. Creep is the main degradation mechanism in steel and superalloy components operating at high temperatures in thermal and nuclear power generation units. Therefore, acquiring creep data during equipment operation is vital for a realistic calculation of the remaining useful life of these units. However, there are severe limitations to obtaining sufficient material for standard-size specimen fabrication and representative sample of the component. Therefore, replacing conventional specimens with small-size specimens, which can be fabricated from a limited amount of material, can facilitate the assessment of power plant components by creep tests without any structural damage. This study aims to compare creep-test results of Cr-Mo ferritic steel using conventional and small-size specimens to assess the effectiveness of using miniaturized specimens for analysis. The results of this study confirm the applicability of miniaturized-specimen creep testing for the reliable estimation of the materials’ remaining life. The results also emphasize the importance of carrying out creep test on miniaturized samples under vacuum, to avoid harmful effects due to the formation of the oxide layer.https://www.academia.edu/124201726/Miniaturized_specimen_creep_testing_an_alternative_method_for_evaluating_the_remaining_service_life_of_CrMo_steel_components |
| spellingShingle | Heloisa Cunha Furtado Fernanda Figueiredo Martins dos Santos Leonardo Sales Araújo Levi de Oliveira Bueno Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel components Academia Materials Science |
| title | Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel components |
| title_full | Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel components |
| title_fullStr | Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel components |
| title_full_unstemmed | Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel components |
| title_short | Miniaturized-specimen creep testing: an alternative for evaluating the remaining life of Cr-Mo steel components |
| title_sort | miniaturized specimen creep testing an alternative for evaluating the remaining life of cr mo steel components |
| url | https://www.academia.edu/124201726/Miniaturized_specimen_creep_testing_an_alternative_method_for_evaluating_the_remaining_service_life_of_CrMo_steel_components |
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