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在实验室条件下模拟CSP工艺制备Hi-B钢,设计了从冶炼到二次再结晶退火的一系列工艺,借助EBSD和XRD技术对不同冷轧压下率下Hi-B钢初次及二次再结晶退火过程中组织与织构的演变规律进行了研究。研究表明:不同冷轧压下率试样中,初次再结晶织构特征总体上相同,主要以γ织构({111}<112>和{111}<110>)为主。同时,冷轧压下率在很大程度上影响二次再结晶Goss织构的演变,过大或过小的压下量都不利于二次再结晶Goss晶粒的异常长大。
Under the laboratory conditions to simulate the CSP process for the preparation of Hi-B steel, a series of processes from smelting to secondary recrystallization annealing were designed. With EBSD and XRD techniques, The evolution of microstructure and texture during recrystallization annealing was studied. The results show that the texture of primary recrystallization in the samples with different cold rolling reduction rates is generally the same, mainly in γ texture ({111} <112> and {111} <110>). At the same time, the cold reduction ratio affects the evolution of secondary recrystallized Goss texture to a great extent. Too large or too small reduction is not conducive to the abnormal growth of secondary recrystallized Goss grains.