Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steel
Effects of the welding inclusions and notches on the deformation and fracture behaviors of low-alloy steels were investigated by combining the tensile performance testing and acoustic emission (AE). The micro-structures and fracture surfaces of the hot-rolled and welded samples were observed by OM a...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-01-01
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| Series: | Journal of Materials Research and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785417304167 |
| _version_ | 1828192259642753024 |
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| author | Guowei Chen Hongyun Luo Haoyu Yang Zhiyuan Han Zhenying Lin Zheng Zhang Yuqin Su |
| author_facet | Guowei Chen Hongyun Luo Haoyu Yang Zhiyuan Han Zhenying Lin Zheng Zhang Yuqin Su |
| author_sort | Guowei Chen |
| collection | DOAJ |
| description | Effects of the welding inclusions and notches on the deformation and fracture behaviors of low-alloy steels were investigated by combining the tensile performance testing and acoustic emission (AE). The micro-structures and fracture surfaces of the hot-rolled and welded samples were observed by OM and SEM. It was found out that the welding inclusions and notches would result in negative impacts on the mechanical properties of low-alloy steel. During the fracture process of the welds, there were four groups of the AE frequencies, representing three kinds of deformation and fracture behaviors: plastic deformation of the welding matrix, fracture of the welding matrix, and fracture or interface detachment of the welding inclusions. Plastic deformation of the welding matrix mainly took place in the plastic stage and the late hardening stage. Fracture of the welding matrix and inclusions were concentrated in the first half of the hardening stage. Keywords: Welding inclusions, Notch, Fracture behaviors, Acoustic emission, Low-alloy steel |
| first_indexed | 2024-04-12T08:51:51Z |
| format | Article |
| id | doaj.art-8fa2ff34f55d4b81af10f7d382b195ac |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-12T08:51:51Z |
| publishDate | 2019-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-8fa2ff34f55d4b81af10f7d382b195ac2022-12-22T03:39:33ZengElsevierJournal of Materials Research and Technology2238-78542019-01-0181447456Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steelGuowei Chen0Hongyun Luo1Haoyu Yang2Zhiyuan Han3Zhenying Lin4Zheng Zhang5Yuqin Su6School of Materials Science and Engineering, Beihang University (BUAA), Beijing, China; The Collaborative Innovation Center for Advanced Aero-Engine (CICAAE), Beihang University (BUAA), Beijing, China; Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University (BUAA), Beijing, ChinaSchool of Materials Science and Engineering, Beihang University (BUAA), Beijing, China; The Collaborative Innovation Center for Advanced Aero-Engine (CICAAE), Beihang University (BUAA), Beijing, China; Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University (BUAA), Beijing, China; Corresponding author.School of Materials Science and Engineering, Beihang University (BUAA), Beijing, China; Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University (BUAA), Beijing, ChinaSchool of Materials Science and Engineering, Beihang University (BUAA), Beijing, ChinaSchool of Materials Science and Engineering, Beihang University (BUAA), Beijing, ChinaSchool of Materials Science and Engineering, Beihang University (BUAA), Beijing, China; The Collaborative Innovation Center for Advanced Aero-Engine (CICAAE), Beihang University (BUAA), Beijing, China; Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University (BUAA), Beijing, ChinaSchool of Materials Science and Engineering, Beihang University (BUAA), Beijing, ChinaEffects of the welding inclusions and notches on the deformation and fracture behaviors of low-alloy steels were investigated by combining the tensile performance testing and acoustic emission (AE). The micro-structures and fracture surfaces of the hot-rolled and welded samples were observed by OM and SEM. It was found out that the welding inclusions and notches would result in negative impacts on the mechanical properties of low-alloy steel. During the fracture process of the welds, there were four groups of the AE frequencies, representing three kinds of deformation and fracture behaviors: plastic deformation of the welding matrix, fracture of the welding matrix, and fracture or interface detachment of the welding inclusions. Plastic deformation of the welding matrix mainly took place in the plastic stage and the late hardening stage. Fracture of the welding matrix and inclusions were concentrated in the first half of the hardening stage. Keywords: Welding inclusions, Notch, Fracture behaviors, Acoustic emission, Low-alloy steelhttp://www.sciencedirect.com/science/article/pii/S2238785417304167 |
| spellingShingle | Guowei Chen Hongyun Luo Haoyu Yang Zhiyuan Han Zhenying Lin Zheng Zhang Yuqin Su Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steel Journal of Materials Research and Technology |
| title | Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steel |
| title_full | Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steel |
| title_fullStr | Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steel |
| title_full_unstemmed | Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steel |
| title_short | Effects of the welding inclusion and notch on the fracture behaviors of low-alloy steel |
| title_sort | effects of the welding inclusion and notch on the fracture behaviors of low alloy steel |
| url | http://www.sciencedirect.com/science/article/pii/S2238785417304167 |
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