The present disclosure further relates to {HEAD ~ metallic alloy} comprising Fe at a level of 65.5 to 80.9 atomic percent; Ni at 1.7 to 15.1 atomic percent; B at 3.5 to 5.9 atomic percent; and {TAIL ~ Si} at 4.4 to 8.6 atomic percent, wherein the alloy indicates a matrix grain size of 500 nm to 20,000 nm and boride grain size of 100 nm to 2500 nm 
comprising
The present disclosure further relates to { HEAD ~ metallic alloy } comprising Fe at a level of 65.5 to 80.9 atomic percent ; Ni at 1.7 to 15.1 atomic percent ; B at 3.5 to 5.9 atomic percent ; and { TAIL ~ Si } at 4.4 to 8.6 atomic percent , wherein the alloy indicates a matrix grain size of 500 nm to 20,000 nm and boride grain size of 100 nm to 2500 nm
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH