Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding
Abstract
:1. Introduction
2. Experimental Methodology
3. Results and Discussion
3.1. Surface Appearance of the Joints
3.2. Macrostructure Observations
3.3. Microstructure Observations
3.4. Tensile Properties
3.5. Microhardness Observations
3.6. XRD Analysis
3.7. Fractography
4. Scope for Future Work
5. Conclusions
- The research on dissimilar Al/Cu joining by using slot-groove configuration demonstrated that some of the fine copper particles dispersed at the top surface of the aluminium. The voids were present at the intersection of SZ and TMAZ on RS for both the joints.
- Maximum hardness values of 214 HV and 211 HV were recorded at the stir zone for BTFSW and CFSW, respectively. The increased hardness value in SZ against the base metals was credited to the newly formed hard IMCs and fine-grain microstructure.
- XRD analysis of both the samples revealed the presence of Cu2Al IMC in the stir zone of CFSW and BTFSW joints.
- All specimens had a brittle fracture, and the specimens fractured mostly at the intersection of SZ and TMAZ on the Cu side.
- The results of the presented investigation will help explore the wide advantages of the bobbin tool technique in joining dissimilar materials.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Welding | Fracture Sorphologies | Fracture Location | Remarks |
---|---|---|---|
BTFSW | The intersection of SZ and TMAZ on the Cu side | Brittle fracture | |
The intersection of SZ and TMAZ on the Cu side | Fracture initiated from the end of extruded Al | ||
CFSW | The intersection of SZ and TMAZ on the Cu side | Brittle fracture | |
The intersection of SZ and TMAZ on the Cu side | Brittle fracture |
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Fuse, K.; Badheka, V.; Oza, A.D.; Prakash, C.; Buddhi, D.; Dixit, S.; Vatin, N.I. Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding. Materials 2022, 15, 5159. https://doi.org/10.3390/ma15155159
Fuse K, Badheka V, Oza AD, Prakash C, Buddhi D, Dixit S, Vatin NI. Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding. Materials. 2022; 15(15):5159. https://doi.org/10.3390/ma15155159
Chicago/Turabian StyleFuse, Kishan, Vishvesh Badheka, Ankit D. Oza, Chander Prakash, Dharam Buddhi, Saurav Dixit, and N. I. Vatin. 2022. "Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding" Materials 15, no. 15: 5159. https://doi.org/10.3390/ma15155159