Published 02/04/2022 at 766 × 376 in Comparative study on performance and microstructure of compositewater-soluble salt core material for manufacturing hollow zincalloy castings Fig. 8. Schematic diagram of strengthening-toughening mechanisms: (a)KNC þ BP and (b)KNC þ GP. Fig. 8. Schematic diagram of strengthening-toughening mechanisms: (a)KNC þ BP and (b)KNC þ GP.