Study on the phase transformation law of titanium microalloyed non-oriented silicon steel
The CCT curves of 50W600 and 50W600-Ti were measured by thermal simulator.The phase transformation of the two test steels under continuous cooling had been studied and precipitation beha-vior in titanium-containing steels was also observed.The results show that the phase transformation temperature of 50W600 is 926-1047 ℃,and the phase transformation temperature range decreases with the increase of cooling rate.The phase transformation temperature of 50W600-Ti is 838-1048 ℃,and cooling rate has little effect on temperature range.The structure of the two test steel matrices basically consists of ferrite,and there is a small amount of cementite under high cooling speed.The microhard-ness of 50W600 did not change significant with cooling rate,while the microhardness of 50W600-Ti peaked and the precipitation of titanium carbide particles was relatively sufficient at the cold rate of 5 ℃/s.
NETL
NSTL
万方数据
