Microstructure and enhanced mechanical performances of dissimilar Mg alloys fabricated by pulse current-assisted friction stir welding (PCaFSW)
Source abstract
Abstract
The dissimilar AZ31B/AZ61 Mg alloy joints were fabricated by pulse current-assisted friction stir welding (PCaFSW). The maximum tensile strength and elongation were 314.28 MPa and 13.66%, respectively. A micro interlocking structure was formed and the grain refinement effect was enhanced by the PCaFSW process, which was improved relative to that in the conventional FSW. The enhanced strength and plasticity with increasing pulse current were attributable to the grain refinement, weakening of texture strength, formation of nano-scale precipitates and increase of short dislocation lines. The fracture mode was transformed from a brittle fracture mode to a combined fracture mode of brittle and ductile fractures.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Magnesium Alloys: Properties and Applications · Electromagnetic Effects on Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Intelligent Forming Equipment and System, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, People's Republic of China
Binzhou Bureau of Agriculture and Rural Areas, Shandong, People's Republic of China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China
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