利用Gleeble-3500热力模拟试验机研究了冷轧基板SPHE钢的静态再结晶行为,通过对奥氏体再结晶行为的研究,得到试验钢发生静态再结晶时变形温度越高,发生静态再结晶越容易。试验钢在900、950和1 000℃变形过程中停留不同时间,再结晶分数出现了个别点下降,是试验检测误差所致;随着停留时间的增加,由于溶质原子和碳化物等第二相质点的析出,引起了再结晶速率降低。试验钢SPHE发生静态再结晶的激活能为239.87kJ/mol。
The static recrystallization behavior of the steel SPHE during the hot deformation was investigated by using a thermo-mechanical simulator Gleeble-3500.It is known that the static recrystallization is easily taken place when the hot deformation temperature is higher by researching the static recrystallization behavior.The static recrystallization percent have innormal alternation with the different holding time periods at 900,950 and 1 000 ℃ because of the experimental error.With the holding time prolonging,the solute atoms and the second phases was separated out,such as Fe3C,the velocity of the static recrystallization will reduce.The static recrystallization activation energy of the steel SPHE was equal to 239.87 kJ/mol.
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