Fig. 1. Experimental instrument principle and SEM images of raw material powder. (a) Diagram of a laser additive manufacturing process [29], (b) SEM image of Fe-based amorphous powder, (c) SEM image of 316L SS powder.

Fig. 2. XRD patterns of LAMed Fe-based BMGC, 316L SS powder, and Fe-based amorphous powder.

Fig. 3. Microstructure observation of LAMed Fe-based BMGC. (a) Low magnification SEM image of Fe-based BMGC, (b) SEM image in the melt pool, (c) SEM image at the melt pool edge and heat-affected zone.

Fig. 4. TEM images of the specimen. (a) Low-magnification bright-field image of 316L SS with M23C6. The insets are the SAED diffraction spot of 316L SS and M23C6, respectively, (b) a high-magnification bright-field image of the interface between the amorphous matrix and 316L SS. The inset shows the SAED diffraction spot of the amorphous halo ring, (c) HRTEM of the interface between the amorphous substrate and 316L SS.

Fig. 5. Mechanical properties of specimens. (a) Compressive stress-strain curves of LAMed Fe-based BMGC, as cast 316L SS and reported as cast Fe-based amorphous[10], (b) relationship between compression strength (σc) and plastic strain (εp) of the typical Fe-based BMGs at room temperature[10,24,27,44⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓-61].

Fig. 6. SEM images of LAMed Fe-based BMGC under different deformation stage. (a) Elastic stage, (b) yielding stage, (c) plastic stage, (d) fracture stage.