The specimens were austenitized at the temperatures for
30 min (according to ASTM: A-255). On this occasion, argon was
injected into the furnace chamber (flow rate 6.0 l/min) to protect
the specimen from the effects of decarburization. Concluded this
interval, the specimen was removed from the oven and placed
quickly in the Jominy test device. The water jet watch cools the
probe tip must remain powered for 600 s. Fig. 2 shows the specimen and the furnace for the Jominy test and Fig. 3 presents a
picture of the cooling of the specimen.