Extended Data Fig. 3: Microstructure of the HNTVAx (x = 0, 5, 10, 15) alloys.
From: Negative mixing enthalpy solid solutions deliver high strength and ductility
(a-d), SEM secondary electron images of cast HNTVA0, HNTVA5, HNTVA10, and HNTVA15 alloys, showing dendrite structure. (e-f), STEM-HAADF image of the cast HNTVA0, HNTVA5, and HNTVA10 alloys, showing L-CFs heterogeneous solid solution structure. The inset shows the corresponding SAED pattern. h, TEM image of the cast HNTVA15 alloy, showing B2 structure. The inset shows the corresponding SAED pattern. (i-l), SEM secondary electron images of the homogenized HNTVA0, HNTVA5, HNTVA10, and HNTVA15 alloys. (m-o), EBSD-IPF images of the HNTVA0, HNTVA5, and HNTVA10 alloys after cold-rolling and annealing at 1200 °C for 5 min. p, EBSD-IPF image of the HNTVA15 alloy after annealing at 1200 °C for 5 min. (q-s), HAADF-STEM images of the HNTVA0, HNTVA5, and HNTVA10 alloys after cold-rolling and annealing at 1200 °C for 5 min, showing L-CF heterogeneous microstructure. t, TEM image of the annealed HNTVA15 alloy, showing B2 structure.
