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借助电子背散射衍射(EBSD)技术测量和计算了高强IF钢退火试样的取向分布函数(ODF)、织构组分的含量和γ取向线强度。研究了{111}〈112〉和{111}〈110〉织构组分的变化,分析了P、Ti对{111}面织构的影响机理。P的存在阻碍了位错的运动和晶界的迁移,进而使再结晶晶粒取向趋于一致,形成较尖锐的{111}面织构。Ti会使冷轧板中含有较强的{554}〈225〉织构组分,从而遗传为再结晶织构,它与{111}〈112〉织构组分间取向差仅为6°,因此,含Ti高强IF钢中含有较高的{111}〈112〉织构组分。
The electron beam backscatter diffraction (EBSD) technique was used to measure and calculate the orientation distribution function (ODF), the content of texture components and the intensity of γ-orientation lines of annealed samples of high-strength IF steel. The changes of the texture components of {111} <112> and {111} <110> were studied, and the influence of P and Ti on the texture of {111} plane was analyzed. The presence of P hinders the movement of dislocations and the migration of grain boundaries, so that the orientation of recrystallized grains tends to be consistent and a sharp {111} plane texture is formed. Ti makes the cold-rolled sheet contain strong {554} <225> texture components, which are inherited as recrystallization textures. The difference in orientation between {111} <112> texture components is only 6 °, Therefore, Ti-containing high-strength IF steel contains higher {111} <112> texture components.