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以低温渗氮取向硅钢为材料,研究初次再结晶晶粒尺寸和渗氮量对二次再结晶开始温度和二次再结晶后Goss织构锋锐度的影响。运用EBSD技术观察样品的微观组织,通过中断实验观察高温退火过程中样品的组织变化以确定二次再结晶开始温度。结果表明,当渗氮量保持一定时,初次再结晶晶粒尺寸越大,二次再结晶开始温度越高;当初次再结晶晶粒尺寸一定时,渗氮量越大,二次再结晶开始温度越高。二次再结晶温度过高和过低均不利于得到锋锐的Goss织构,本文所用材料的最佳二次再结晶温度为1050℃。
The effect of initial recrystallization grain size and nitriding on the onset temperature of secondary recrystallization and Goss texture sharpness after secondary recrystallization was studied by using low temperature nitriding oriented silicon steel. The microstructure of the sample was observed by EBSD technique. The microstructure of the sample was observed through the interruption experiment to determine the secondary recrystallization initiation temperature. The results show that when the amount of nitriding is constant, the larger the primary recrystallization grain size, the higher the secondary recrystallization start temperature. When the primary recrystallization grain size is constant, the larger the nitriding amount, the secondary recrystallization begins The higher the temperature. The secondary recrystallization temperature is too high and too low are not conducive to Feng Feng Goss texture, the material used in this paper, the best secondary recrystallization temperature of 1050 ℃.