Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive Welding
This study aims to examine how the collision angle affects the Cu-Ta weld generated by the explosive welding method using molecular dynamics modeling. When two blocks collide, the metallic substrates melt rapidly. Subsequently, when heat energy dissipates to the surrounding areas, the weld interface...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/15/1/94 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832587923919208448 |
|---|---|
| author | Van-Thuc Nguyen Nguyen Quang Hien Pham Minh Duc Tran Duy Nam Van Huong Hoang Van Thanh Tien Nguyen |
| author_facet | Van-Thuc Nguyen Nguyen Quang Hien Pham Minh Duc Tran Duy Nam Van Huong Hoang Van Thanh Tien Nguyen |
| author_sort | Van-Thuc Nguyen |
| collection | DOAJ |
| description | This study aims to examine how the collision angle affects the Cu-Ta weld generated by the explosive welding method using molecular dynamics modeling. When two blocks collide, the metallic substrates melt rapidly. Subsequently, when heat energy dissipates to the surrounding areas, the weld interface begins rapidly cooling. Eventually, the weld joint’s surface shape and temperature stabilize. A meta-solid solution state between Cu and Ta could develop under extreme collision conditions of explosive welding through a dynamic diffusion mechanism. Furthermore, the plastic deformation process of the face-centered cubic (FCC) matrix after the explosive collision causes twin boundary scattering in the Cu substrate. The stress evolution experiences three stages: quick increasing, spreading out, and stabling. The stress mainly concentrates on the weld joint. Due to its dynamic recrystallization mechanism, the Cu substrate has a lower residual stress level than the Ta substrate. The atomic strain of the Cu-Ta weld joint improves dramatically as the impact angle increases. The high-strain zone extends toward the lower Ta block between 5° and 15°. Furthermore, the atomic strain and amorphous structure rates increase when the impact angles increase from 5° to 15°. After further improvement up to 20°, they then suffer a decrease. The Cu-Ta weld achieves a tensile strength ranging from 6.37 to 8.94 GPa. The Cu/Cu-Ta/Cu welding joint’s interface is coherent, transforming from an amorphous to a body-centered cubic (BCC) structure. Because of the dynamic diffusion mechanism at the interface, which creates an almost identical atomic rate between Cu and Ta atoms, combined with the dynamic recrystallization phenomenon, explosive welding provides the advantage of combining two low-solubility solid-solution metals. |
| format | Article |
| id | doaj-art-67a82ecd70e1440c949902315340b0dc |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-67a82ecd70e1440c949902315340b0dc2025-01-24T13:41:40ZengMDPI AGMetals2075-47012025-01-011519410.3390/met15010094Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive WeldingVan-Thuc Nguyen0Nguyen Quang Hien1Pham Minh Duc2Tran Duy Nam3Van Huong Hoang4Van Thanh Tien Nguyen5Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamDepartment of Technology, Dong Nai Technology University, Bien Hoa 76000, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Industrial University of Ho Chi Minh City, Nguyen Van Bao Street, Ward 4, Go Vap District, Ho Chi Minh City 70000, VietnamThis study aims to examine how the collision angle affects the Cu-Ta weld generated by the explosive welding method using molecular dynamics modeling. When two blocks collide, the metallic substrates melt rapidly. Subsequently, when heat energy dissipates to the surrounding areas, the weld interface begins rapidly cooling. Eventually, the weld joint’s surface shape and temperature stabilize. A meta-solid solution state between Cu and Ta could develop under extreme collision conditions of explosive welding through a dynamic diffusion mechanism. Furthermore, the plastic deformation process of the face-centered cubic (FCC) matrix after the explosive collision causes twin boundary scattering in the Cu substrate. The stress evolution experiences three stages: quick increasing, spreading out, and stabling. The stress mainly concentrates on the weld joint. Due to its dynamic recrystallization mechanism, the Cu substrate has a lower residual stress level than the Ta substrate. The atomic strain of the Cu-Ta weld joint improves dramatically as the impact angle increases. The high-strain zone extends toward the lower Ta block between 5° and 15°. Furthermore, the atomic strain and amorphous structure rates increase when the impact angles increase from 5° to 15°. After further improvement up to 20°, they then suffer a decrease. The Cu-Ta weld achieves a tensile strength ranging from 6.37 to 8.94 GPa. The Cu/Cu-Ta/Cu welding joint’s interface is coherent, transforming from an amorphous to a body-centered cubic (BCC) structure. Because of the dynamic diffusion mechanism at the interface, which creates an almost identical atomic rate between Cu and Ta atoms, combined with the dynamic recrystallization phenomenon, explosive welding provides the advantage of combining two low-solubility solid-solution metals.https://www.mdpi.com/2075-4701/15/1/94surface morphologycollision anglestructure transformationinterface |
| spellingShingle | Van-Thuc Nguyen Nguyen Quang Hien Pham Minh Duc Tran Duy Nam Van Huong Hoang Van Thanh Tien Nguyen Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive Welding Metals surface morphology collision angle structure transformation interface |
| title | Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive Welding |
| title_full | Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive Welding |
| title_fullStr | Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive Welding |
| title_full_unstemmed | Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive Welding |
| title_short | Atomistic Insight into the Effects of Collision Angle on the Characteristics of Cu-Ta Joining by Explosive Welding |
| title_sort | atomistic insight into the effects of collision angle on the characteristics of cu ta joining by explosive welding |
| topic | surface morphology collision angle structure transformation interface |
| url | https://www.mdpi.com/2075-4701/15/1/94 |
| work_keys_str_mv | AT vanthucnguyen atomisticinsightintotheeffectsofcollisionangleonthecharacteristicsofcutajoiningbyexplosivewelding AT nguyenquanghien atomisticinsightintotheeffectsofcollisionangleonthecharacteristicsofcutajoiningbyexplosivewelding AT phamminhduc atomisticinsightintotheeffectsofcollisionangleonthecharacteristicsofcutajoiningbyexplosivewelding AT tranduynam atomisticinsightintotheeffectsofcollisionangleonthecharacteristicsofcutajoiningbyexplosivewelding AT vanhuonghoang atomisticinsightintotheeffectsofcollisionangleonthecharacteristicsofcutajoiningbyexplosivewelding AT vanthanhtiennguyen atomisticinsightintotheeffectsofcollisionangleonthecharacteristicsofcutajoiningbyexplosivewelding |