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基于Humphreys回复、再结晶和晶粒长大统一理论,研究了析出相质点的Zenner钉扎对Fe-3%S i取向硅钢二次再结晶的影响。比较了一般取向硅钢(CGO)和高磁感取向硅钢(HGO)的晶粒尺寸、晶界参数以及析出相质点的Zenner钉扎因子。结果表明,高斯晶粒与普通晶粒相比没有明显的尺寸优势,具有强烈高斯织构的HGO在晶界能和晶界活动性上与CGO的差异非常小,二者具有相近的临界Zenner因子;但HGO中析出相质点更为细小和弥散,其Zenner因子是CGO的2.8～5.0倍,因此HGO中Zenner因子更大,其高斯晶粒更容易率先达到临界条件而发生二次再结晶,从而在二次再结晶后具有更强的高斯织构。
Based on the unified theory of Humphreys’ recovery, recrystallization and grain growth, the effect of Zenner pinning with precipitated phase particles on the secondary recrystallization of Fe-3% S i oriented silicon steel was studied. The grain size, grain boundary parameters and Zenner pinning factor of the precipitated phase are compared between CGO and HGO. The results show that there is no obvious size advantage of Gaussian grains compared with ordinary grains. HGO with strong Gaussian texture has very little difference from CGO in grain boundary energy and grain boundary activity. Both of them have similar critical Zenner factor However, the precipitates in HGO are more fine and dispersed, and the Zenner factor is 2.8-5.0 times that of CGO. Therefore, the Zenner factor in HGO is larger, and the Gaussian grains are more likely to reach the critical condition first and then undergo secondary recrystallization. After secondary recrystallization has a stronger Gaussian texture.