冷拔高碳钢丝在退火过程中再结晶织构的演变

摘要

利用扫描电镜和电子背散射衍射技术对冷拔高碳钢丝在600℃等温退火过程中再结晶织构的演变进行了研究，并且探究了织构强度与钢丝形变量及钢丝抗拉强度的关系。结果表明：再结晶织构继承了原来形变的〈110〉织构，并且随退火时间的延长，该织构强度先增加后减弱，并有〈112〉织构出现；形变量较大的钢丝其再结晶织构的强度也较高；钢丝的抗拉强度变化趋势与〈110〉织构强度的变化趋势有一定的对应关系。%The recrystallization texture evolution of cold drawn high carbon steel wire annealed at 600 ℃ was studied by scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). The relations between texture intensity and deformation degrees and tensile strength of this steel wire were discussed. Results show that the recrystalization texture was the same as the 〈110〉 texture of drawn wires. The intensity of texture increased at first and then decreased with annealing time lengthened, and the 〈112〉texture appeared. When the cold drawn high carbon steel wire had a greater degree of deformation, the intensity of the reerystallization texture was higher. There was a corresponding relationship between the tensile strength of the steel wire and the intensity of 〈110〉 texture.