Microstructure and Mechanical Properties of an Ultrasonic Spot-Welded Aluminum-to-Aluminum Joint: Response to Interlayer Thickness
| Autor: | Zeng-Lei Ni, Fu-Xing Ye |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Materials science chemistry.chemical_element 02 engineering and technology Welding lcsh:Technology Article law.invention Diffusion layer 020901 industrial engineering & automation Aluminium law Ultimate tensile strength General Materials Science Composite material lcsh:Microscopy Joint (geology) Spot welding lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T 021001 nanoscience & nanotechnology Microstructure particle interlayer thickness mechanical property ultrasonic spot welding chemistry lcsh:TA1-2040 aluminum Ultrasonic sensor lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Volume 12 Issue 3 Materials, Vol 12, Iss 3, p 369 (2019) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma12030369 |
| Popis: | To enhance the mechanical strength of an ultrasonic spot-welded Al/Al joint, an Al 2219 particle interlayer was placed between the two Al sheets during the ultrasonic spot welding process. The effects of the interlayer thickness on the microstructure and mechanical performances of the joints were systematically investigated. The results showed that, the optimum thickness of the Al 2219 particle interlayer was 10 &mu m, which was beneficial to enhance the weld interface temperature up to 402 ° C. The bonding interface of Al/Al 2219 with a wave-like shape was sound, and no significant diffusion layer occurred. The peak lap shear tensile strength (~84.8 MPa) was obtained, which was 36% higher than that (~67.3 MPa) for the joint without the Al 2219 particle interlayer. The strengthening mechanism is caused by the increase of plastic deformation and contact areas in the weld interface. |
| Databáze: | OpenAIRE |
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