Micro-characteristics of High-Entropy Alloy Weld Formed by Friction Stir Lap Welding of 1060 Al and AlCoCrFeNi
Transactions of the Indian Institute of Metals, ISSN: 0975-1645, Vol: 73, Issue: 12, Page: 3019-3026
2020
- 2Citations
- 14Captures
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Article Description
1060 Al and AlCoCrFeNi are friction stir lap welded in this study. The limited flow of high-entropy alloy avoids the occurrences of hook and cold lap defects in the lap joint. Coarsening of large-size Al(Cr)-rich particles and dissolution of small-size Al(Cr)-rich particles simultaneously take place in the heat-affected zone of high-entropy alloy during the welding. The plastic deformation of high-entropy alloy induced by welding tool refines and homogenizes the microstructures in thermo-mechanically affected zone and stir zone. Friction stir lap weld of high-entropy alloy presents higher hardness than the base metal in each zone. The hardness of stir zone exhibits a maximum of 600 Hv, higher than the maximum hardness of AlCoCrFeNi traditionally obtained. This should be attributed to the microstructure refinement as well as the enhancement of solid-solution strengthening and the occurrence of body-centered-cubic structures due to Al content improvement.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85094102974&origin=inward; http://dx.doi.org/10.1007/s12666-020-02110-8; http://link.springer.com/10.1007/s12666-020-02110-8; http://link.springer.com/content/pdf/10.1007/s12666-020-02110-8.pdf; http://link.springer.com/article/10.1007/s12666-020-02110-8/fulltext.html; https://dx.doi.org/10.1007/s12666-020-02110-8; https://link.springer.com/article/10.1007/s12666-020-02110-8
Springer Science and Business Media LLC
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