Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316L
The paper presents a study of the application of Leak-Before- Break (LBB) concept in a relatively small-diameter high energy reactor coolant line, where it is proposed type AISI 316LN to be used as base material welded with type AISI 316L coated electrode considering a pipe with diameter of 273 mm....
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| Language: | English |
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Gruppo Italiano Frattura
2017-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1899 |
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| author | Gabriel Giannini de Cunto Arnaldo Homobono Paes de Andrade Waldemar Alfredo Monteiro |
| author_facet | Gabriel Giannini de Cunto Arnaldo Homobono Paes de Andrade Waldemar Alfredo Monteiro |
| author_sort | Gabriel Giannini de Cunto |
| collection | DOAJ |
| description | The paper presents a study of the application of Leak-Before- Break (LBB) concept in a relatively small-diameter high energy reactor coolant line, where it is proposed type AISI 316LN to be used as base material welded with type AISI 316L coated electrode considering a pipe with diameter of 273 mm. The pipe material was characterized in terms of tensile test with Ramberg-Osgood analyses and fracture toughness tests with J-Resistance curve determination, considering base material, weld joint and heat affected zones. For the mechanical properties found in tensile tests and using the PICEP software, were determined the leak rate curves versus crack sizes, to determine the size of a detectable leakage crack, and the critical crack sizes, considering failure by plastic collapse. For the critical crack sizes found in weld, which presented the lowest toughness, J-Integral analysis was performed considering failure by tearing instability. Results show a well-defined mechanical behavior where base material has a high toughness, weld has a low toughness, and HAZ showed intermediate properties. For the load limit analysis, the lowest critical crack size was found for base material presenting circumferential cracks. For J- Integral analysis, it was demonstrated that failure by tearing instability will not occur. |
| format | Article |
| id | doaj-art-eabdb7bf166f4b348d59eccef2c97edb |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2017-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-eabdb7bf166f4b348d59eccef2c97edb2025-01-03T00:40:27ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-06-011141Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316LGabriel Giannini de CuntoArnaldo Homobono Paes de AndradeWaldemar Alfredo MonteiroThe paper presents a study of the application of Leak-Before- Break (LBB) concept in a relatively small-diameter high energy reactor coolant line, where it is proposed type AISI 316LN to be used as base material welded with type AISI 316L coated electrode considering a pipe with diameter of 273 mm. The pipe material was characterized in terms of tensile test with Ramberg-Osgood analyses and fracture toughness tests with J-Resistance curve determination, considering base material, weld joint and heat affected zones. For the mechanical properties found in tensile tests and using the PICEP software, were determined the leak rate curves versus crack sizes, to determine the size of a detectable leakage crack, and the critical crack sizes, considering failure by plastic collapse. For the critical crack sizes found in weld, which presented the lowest toughness, J-Integral analysis was performed considering failure by tearing instability. Results show a well-defined mechanical behavior where base material has a high toughness, weld has a low toughness, and HAZ showed intermediate properties. For the load limit analysis, the lowest critical crack size was found for base material presenting circumferential cracks. For J- Integral analysis, it was demonstrated that failure by tearing instability will not occur.https://www.fracturae.com/index.php/fis/article/view/1899Leak-Before-Break316LNWeld 316L |
| spellingShingle | Gabriel Giannini de Cunto Arnaldo Homobono Paes de Andrade Waldemar Alfredo Monteiro Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316L Fracture and Structural Integrity Leak-Before-Break 316LN Weld 316L |
| title | Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316L |
| title_full | Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316L |
| title_fullStr | Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316L |
| title_full_unstemmed | Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316L |
| title_short | Application of Leak-Before-Break concept in 316LN austenitic steel pipes welded using 316L |
| title_sort | application of leak before break concept in 316ln austenitic steel pipes welded using 316l |
| topic | Leak-Before-Break 316LN Weld 316L |
| url | https://www.fracturae.com/index.php/fis/article/view/1899 |
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