Influence of Vanadium and Boron Additions on the Microstructure, Fracture Toughness, and Abrasion Resistance of Martensite-Carbide Composite Cast Steel

Table 2

Volume fraction of austenite and carbides in cast alloys.

Heat	Condition	Vol.%	Vol.%; M7C3	Vol.%; V6C5 + BC	Dendrite arm spacing, µm
GS-1	As cast	42.3	28.7	—	18.4
GS-2	As cast	37.9	21.2	8.5	15.1
GS-3	As cast	30.7	19.5	10.4	14.9
GS-4	As cast	30.3	19.1	11.9	10.6
GS-5	As cast	27.8	21.6	17.5	8.3