@ARTICLE{Wang_Tao_Ultrasonic_2021, author={Wang, Tao and Gong, Xue and Ji, Shude and Xue, Gang and Lv, Zan}, volume={vol. 66}, number={No 1}, journal={Archives of Metallurgy and Materials}, pages={217-222}, howpublished={online}, year={2021}, publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences}, publisher={Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences}, abstract={Ultrasonic assisted active-passive filling friction stir repairing (A-PFFSR) was proposed to repair volume defects in the metallic parts. Sound joints without interfacial defects could be achieved. Firstly, the ultrasonic was beneficial to improving material flow and atom diffusion, and then eliminated kissing bond defects compared to conventional A-PFFSR joints. Secondly, the equiaxed grains were refined by ultrasonic vibration. Lastly, the repairing passes were reduced due to the ultrasonic, which decreased softening degree of the repaired joints. The maximum tensile strength of 150 MPa was achieved. Therefore, this strategy to repair the volume defects is feasibility and potential in the remanufacturing fields of aerospace and transportation.}, type={Article}, title={Ultrasonic Assisted Active-Passive Filling Friction Stir Repairing to Eliminate Volume Defects}, URL={http://journals.pan.pl/Content/117807/PDF/AMM-2021-1-27-Shyde%20Ji.pdf}, doi={10.24425/amm.2021.134778}, keywords={Friction stir repairing, Magnesium alloys, Defects, ultrasonic, Mechanical properties}, }