Obtaining Martensitic Structures during Thixoforming of Hypoeutectic Gray Cast Iron

Table 4

Vickers microhardness for alloys (95% confidence interval).

Condition	Predominant phase	Vickers microhardness (HV)
1145°C	Ferrite/pearlite	331.3 ± 31.6
1135°C		325.1 ± 36.7
1130°C–0 s	Ferrite/pearlite	379.5 ± 39.9
	Martensite colonies	577.8 ± 34.6
1130°C–30 s	Martensite	593.6 ± 41.9
1130°C–60 s	Martensite	555.3 ± 39.3
1130°C–90 s	Ferrite/pearlite	329.3 ± 30.2