Fig. 1. Schematic of PF-LR technology. (a) LR; (b) PF

Fig. 2. Sampling schematic of the tensile specimen containing 10%, 30%, and 50% PF-LR volume fraction and geometric size of tensile specimen

Fig. 3. OM and SEM images of thePF-LR TA15 alloy forging at yz cross-section. (a) OM image of the yz cross-section of the PF-LR TA15 titanium alloy ; (b) magnified OM image of the RZ; (c) SEM image of the RZ ; (d) magnified OM image of the HAZ ; (e) SEM image of the fine equiaxed grains in Fig.3(d); (f) SEM image of the coarse equiaxed grains in Fig.3(d); (g) SEM image of the WSZ

Fig. 4. Microhardness distribution of the PF-LR TA15 alloy forging at yz cross-section

Fig. 5. Tensile fracture morphologies of the wrought substrate and corresponding magnified image of zone 1

Fig. 6. Tensile fracture morphologies of the PF-LR tensile sample containing 30% repair volume fraction. (a) Fracture morphology; (b) magnified image of zone 1; (c) magnified image of zone 2; (d) magnified image of zone 3

Fig. 7. Schematic of the stress interaction between the RZ and zone of substrate and its effects on the ductility of the PF-LR forging. (a) Elastic deformation stage; (b) plastic deformation till fracture