Fracture Surface Analysis in Thixojoined Tool Steels

Table 1

Microstructural data as a function of holding time and temperature of AISI D2 steel.

Temp. (°C)	Holding time (min.)	Liquid fraction (%fl)	Shape factor (SF)	Ave. Grains size (𝜇m)
1280	5	12	0.8	35
	10	15	0.85	50
	15	17	0.8	55
	20	18	0.78	65
1300	5	15	0.86	40
	10	18	0.85	45
	15	25	0.78	50
	20	26	0.75	55
1320	5	25	0.74	50
	10	30	0.7	50
	15	36	0.68	60
	20	36	0.7	75
1340	5	35	0.45	55
	10	37	0.4	60
	15	38	0.41	65
	20	40	0.3	80