Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfaces
Explosive welding interface commonly show wavy shapes, makes microstructure anisotropic. The effects of microstructure and different loading directions on shear properties of bonding interfaces at dynamic loading conditions are still unclear. In this work, characteristics on transverse and longitudi...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423016071 |
| _version_ | 1797745202127962112 |
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| author | Qiang Zhou Honghong Lu Xuke Lan Yansong Guo Kaiyuan Liu Guangyan Huang Bin Jia Pengwan Chen |
| author_facet | Qiang Zhou Honghong Lu Xuke Lan Yansong Guo Kaiyuan Liu Guangyan Huang Bin Jia Pengwan Chen |
| author_sort | Qiang Zhou |
| collection | DOAJ |
| description | Explosive welding interface commonly show wavy shapes, makes microstructure anisotropic. The effects of microstructure and different loading directions on shear properties of bonding interfaces at dynamic loading conditions are still unclear. In this work, characteristics on transverse and longitudinal sections of TA2/Q235 welding interface was characterized by optical microscopy. It was found that the transverse sections of bonding interface showed wavy shapes with wavelength and amplitude of 1200 μm and 400 μm. The longitudinal sections of bonding interfaces were composed of wavy interface, dislocation shaped interface and stacking fault shaped interface, which was explained by non-equilibrium theory. A small-size S-shaped specimens was processed to investigate shear properties of bonding interface varied with orientation angles (0°, 45°and 90°) at both quasi-static (0.001 s−1) and dynamic (5000∼7000 s−1) loadings. Meanwhile, fracture mechanism of interfaces was analyzed by scanning electron microscopy coupled with energy dispersive spectrometer. The results indicated that the maximum shear strength of joining interfaces (380 MPa–410 MPa under quasi-static loading, and 450 MPa–600 MPa under dynamic loading) was obtained along 90° orientation angle. Fluctuation of explosive detonation pressure was the fundamental cause of the interface inhomogeneity, and strength of joining interfaces increases with increasing strain rates, indicating positive strain rate sensitivity. Fracture mainly occurred in bonding interfaces near TA2 side at quasi-state loading, and failure occurred in interface waves at dynamic loading because of TA2 showed more obvious strain rate sensitivity than Q235. Fracture morphology indicated the ductile-brittle mixed fracture occurred in both quasi-static and dynamic tests. |
| first_indexed | 2024-03-12T15:19:59Z |
| format | Article |
| id | doaj.art-8a4361f72de746528f723978425a2905 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:19:59Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-8a4361f72de746528f723978425a29052023-08-11T05:34:27ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012564726491Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfacesQiang Zhou0Honghong Lu1Xuke Lan2Yansong Guo3Kaiyuan Liu4Guangyan Huang5Bin Jia6Pengwan Chen7State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaHuanghe Science and Technology University, Zhengzhou 450000, ChinaChongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China; Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000, China; Corresponding author. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China; Corresponding author.Explosive welding interface commonly show wavy shapes, makes microstructure anisotropic. The effects of microstructure and different loading directions on shear properties of bonding interfaces at dynamic loading conditions are still unclear. In this work, characteristics on transverse and longitudinal sections of TA2/Q235 welding interface was characterized by optical microscopy. It was found that the transverse sections of bonding interface showed wavy shapes with wavelength and amplitude of 1200 μm and 400 μm. The longitudinal sections of bonding interfaces were composed of wavy interface, dislocation shaped interface and stacking fault shaped interface, which was explained by non-equilibrium theory. A small-size S-shaped specimens was processed to investigate shear properties of bonding interface varied with orientation angles (0°, 45°and 90°) at both quasi-static (0.001 s−1) and dynamic (5000∼7000 s−1) loadings. Meanwhile, fracture mechanism of interfaces was analyzed by scanning electron microscopy coupled with energy dispersive spectrometer. The results indicated that the maximum shear strength of joining interfaces (380 MPa–410 MPa under quasi-static loading, and 450 MPa–600 MPa under dynamic loading) was obtained along 90° orientation angle. Fluctuation of explosive detonation pressure was the fundamental cause of the interface inhomogeneity, and strength of joining interfaces increases with increasing strain rates, indicating positive strain rate sensitivity. Fracture mainly occurred in bonding interfaces near TA2 side at quasi-state loading, and failure occurred in interface waves at dynamic loading because of TA2 showed more obvious strain rate sensitivity than Q235. Fracture morphology indicated the ductile-brittle mixed fracture occurred in both quasi-static and dynamic tests.http://www.sciencedirect.com/science/article/pii/S2238785423016071TA2/Q235 explosive welding interfaceMicrostructure observationShear propertiesStrain rate sensitivityFracture mechanism |
| spellingShingle | Qiang Zhou Honghong Lu Xuke Lan Yansong Guo Kaiyuan Liu Guangyan Huang Bin Jia Pengwan Chen Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfaces Journal of Materials Research and Technology TA2/Q235 explosive welding interface Microstructure observation Shear properties Strain rate sensitivity Fracture mechanism |
| title | Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfaces |
| title_full | Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfaces |
| title_fullStr | Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfaces |
| title_full_unstemmed | Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfaces |
| title_short | Anisotropy in microstructure and shear properties of TA2/Q235 explosive welding interfaces |
| title_sort | anisotropy in microstructure and shear properties of ta2 q235 explosive welding interfaces |
| topic | TA2/Q235 explosive welding interface Microstructure observation Shear properties Strain rate sensitivity Fracture mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423016071 |
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