G.G.Cheng
,
M.L.Wang
,
X.E.Yang
,
Y.L.Li
,
Y.G.Wang
,
L.Y.Wang
,
P.Zhao
金属学报(英文版)
Precipitation condition and nucleation of Ti2 03 during solidification of clean steel have been studied. The behavior of Ti2 03 during solidification as well as possibility of using Ti203 to refine as-cast grains as heterogeneous nucleation sites is discussed. It is shown that Ti2 03 can be formed provided that the steelmaking and solidification process is controlled strictly. And inoculating clean steel with Ti203 is an effective way to refine as-cast grains.
关键词:
clean steel
,
null
,
null
C.Huang
,
B.Song
,
J.H.Mao
,
Q.Lin
,
P.Zhao
金属学报(英文版)
By using of electrolytic pure iron, the specimens containing different oxide content were made in a Mo wire furnace. The DTA method was employed to measure the undercooling of liquid iron during solidification. The relations between the cleanness of liquid iron and undercooling, thermodynamic driving force of nucleation, the nucleus forming energy, as well as the critical radius of nucleus have been investigated. The results showed that with the increase of cleanness of liquid iron the undercooling and thermodynamic driving force increased, while the nucleus forming energy and critical radius of nucleus decreased.
关键词:
pure iron
,
null
,
null
