Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints
Duplex stainless steels (DSS) are dual-phase alloys consisting of austenitic and ferritic phases in the microstructure. DSS provide an ideal compromise between mechanical properties and corrosion resistance. Welding of DSS leads to a change in the ferrite/austenite ratio in the microstructure and t...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2024-12-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10355 |
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| author | Pavel Kovačócy Maroš Martinkovič Beáta Šimeková Martin Hnilica Ingrid Kovaříková Jiří Macháček Michal Krbaťa |
| author_facet | Pavel Kovačócy Maroš Martinkovič Beáta Šimeková Martin Hnilica Ingrid Kovaříková Jiří Macháček Michal Krbaťa |
| author_sort | Pavel Kovačócy |
| collection | DOAJ |
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Duplex stainless steels (DSS) are dual-phase alloys consisting of austenitic and ferritic phases in the microstructure. DSS provide an ideal compromise between mechanical properties and corrosion resistance. Welding of DSS leads to a change in the ferrite/austenite ratio in the microstructure and to degradation of the properties of the weld joints. Therefore, it is very important to control the microstructure of the weld joint directly during the welding process. An innovative method of laser welding applying a dual beam was used. By spreading the energy of the laser beam over two spots, additional heat is introduced into the weld, which ensures a slowdown in the cooling rate of the DSS and possibly ensures the desired ratio of ferrite and austenite in the microstructure. The influence of laser welding parameters and energy distribution of the dual beam on the fusion zone (FZ) geometry, resulting microstructure and mechanical properties of the weld joints was monitored. The tensile and shear strength was measured. The coefficient of proportionality between shear and tensile strength was calibrated to be as 1.38 ± 0.01.
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| format | Article |
| id | doaj-art-9f25e20331594fff95f6a6fe4ab67141 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-9f25e20331594fff95f6a6fe4ab671412025-08-20T03:34:52ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822024-12-015010.14311/APP.2024.50.0013Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel jointsPavel Kovačócy0Maroš Martinkovič1Beáta Šimeková2Martin Hnilica3Ingrid Kovaříková4Jiří Macháček5Michal Krbaťa6Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, J. Bottu 25, 91724 Trnava, Slovak RepublicSlovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, J. Bottu 25, 91724 Trnava, Slovak RepublicSlovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, J. Bottu 25, 91724 Trnava, Slovak RepublicSlovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, J. Bottu 25, 91724 Trnava, Slovak RepublicAlexander Dubcek University of Trencín, Faculty of Special Technology, Ku kyselke 469, 91106 Trencín, Slovak RepublicAlexander Dubcek University of Trencín, Faculty of Special Technology, Ku kyselke 469, 91106 Trencín, Slovak RepublicAlexander Dubcek University of Trencín, Faculty of Special Technology, Ku kyselke 469, 91106 Trencín, Slovak Republic Duplex stainless steels (DSS) are dual-phase alloys consisting of austenitic and ferritic phases in the microstructure. DSS provide an ideal compromise between mechanical properties and corrosion resistance. Welding of DSS leads to a change in the ferrite/austenite ratio in the microstructure and to degradation of the properties of the weld joints. Therefore, it is very important to control the microstructure of the weld joint directly during the welding process. An innovative method of laser welding applying a dual beam was used. By spreading the energy of the laser beam over two spots, additional heat is introduced into the weld, which ensures a slowdown in the cooling rate of the DSS and possibly ensures the desired ratio of ferrite and austenite in the microstructure. The influence of laser welding parameters and energy distribution of the dual beam on the fusion zone (FZ) geometry, resulting microstructure and mechanical properties of the weld joints was monitored. The tensile and shear strength was measured. The coefficient of proportionality between shear and tensile strength was calibrated to be as 1.38 ± 0.01. https://ojs.cvut.cz/ojs/index.php/APP/article/view/10355weldingwelding parametersweld jointlaserduplex stainless steelshear test |
| spellingShingle | Pavel Kovačócy Maroš Martinkovič Beáta Šimeková Martin Hnilica Ingrid Kovaříková Jiří Macháček Michal Krbaťa Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints Acta Polytechnica CTU Proceedings welding welding parameters weld joint laser duplex stainless steel shear test |
| title | Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints |
| title_full | Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints |
| title_fullStr | Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints |
| title_full_unstemmed | Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints |
| title_short | Influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints |
| title_sort | influence of laser beam welding parameters on local mechanical properties of duplex stainless steel joints |
| topic | welding welding parameters weld joint laser duplex stainless steel shear test |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10355 |
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