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采用X射线衍射法分析了7B04铝合金中厚板沿厚度方向的织构差异,结果表明织构沿厚度方向存在较大差异,变形织构R/S,brass,copper从表层到中心含量呈递增趋势;剪切织构r-cube和{111}<110>主要分布在表层;随机分布从表层的73%到中心的17%含量则快速下降;再结晶织构cube和cubeND在各层的含量基本不变,均维持3%和5%附近。织构沿厚度方向存在差异的主要原因在于热轧变形量和再结晶进程沿厚度的不均匀性。根据再结晶织构组分和变化趋势推测再结晶形核机制主要为粒子促进形核。
The X-ray diffraction analysis of 7B04 aluminum alloy plate thicknesses along the thickness direction of the difference, the results show that there is a great difference in the thickness direction of the texture, deformation texture R / S, brass, copper from the surface to the center was increased The distributions of r-cube and {111} <110> are mainly distributed in the surface layer. The distribution of random distribution from 73% in the surface to 17% in the center decreases rapidly. The content of recrystallized texture cube and cubeND in each layer Basically unchanged, are maintained at 3% and 5% in the vicinity. The main reason for the difference of texture in the thickness direction lies in the amount of hot rolling deformation and the nonuniformity of thickness along the recrystallization process. Based on the recrystallization texture components and the tendency of change, it is speculated that the nucleation mechanism of recrystallization is mainly particle-facilitated nucleation.