A bimetallic ring component is forged via friction stir assisted forging (FS-forging). A cylindrical bimetallic blank, a magnesium AZ31 cylinder (Mg core) tightly fitted inside an aluminum 6061-T6 tube (Al skin), is used. In the FS-forging, the frictional heat and stirring of the rotating tool forge the blank into the desired shape, while simultaneously generating a solid state joint between the Mg core and the Al skin without additional external heating. This is confirmed by microstructural analysis and mechanical tests. The microstructural analysis shows that the microstructures of the Mg core and Al skin are differently affected by the FS-forging.
Published: January 13, 2023
Citation
Mondal M., S. Basak, H. Das, S. Hong, H. Choi, J. Park, and H. Han. 2021.Manufacturing of magnesium/aluminium bimetallic ring components by friction stir assisted simultaneous forging and solid-state joining.International Journal of Precision Engineering and Manufacturing-Green Technology 8, no. 5:1429–1438.PNNL-SA-150783.doi:10.1007/s40684-020-00244-0