Avoiding or Promoting Graphite in Carbon-Rich Chromium-Containing CoNiFer Cast Alloys—Part 2: Microstructures of the Elaborated Alloys

Table 1

Measured surface fractions of carbides and graphite and comparison with the volume fractions issued from the mass fractions calculated at 500°C [10]: case of the Co-based alloys.

calc. vol.% and measured surf. %	Co-xCr-3C			Co-yCr-4C			Co-zCr-5C
wt.% Cr	30	12	12 (meas.)	30	15.5	15.5 (meas.)	30	23	23 (meas.)
Carbides	38.1	15.2	16.6±1.1	40.4	19.4	24.2±0.8	37.7	28.5	44.1±6.3
Graphite	0	3.87	4.87±0.26	0	5.32	5.82±0.37	1.26	4.78	3.05±0.56