Table 1.

The chemical compositions (at.%) of master alloy (alloy) and C_0.1-alloy (C-doped) and the Vickers micro hardness of both samples.

Sample	C	Mo	Nb	Re	Ta	W	Hardness
							100 gf	500 gf	2000 gf
alloy	-	14.43 ± 0.17	22.74 ± 0.38	15.29 ± 0.09	26.66 ± 0.19	20.90 ± 0.19	6.451 ± 0.140	6.035 ± 0.303	5.400 ± 0.213
C-doped	0.06	14.32 ± 0.41	22.63 ± 0.54	18.12 ± 0.28	26.44 ± 0.32	18.43 ± 0.26	5.826 ± 0.104	5.905 ± 0.086	5.749 ± 0.203