论文部分内容阅读
利用光学显微镜(OM)、电子背散射衍射(EBSD)和扫描电子显微镜(SEM)对ZK60镁合金板组织与性能进行分析。利用高密度脉冲电流对轧制变形ZK60镁合金板进行处理,使变形组织在较短时间内发生完全再结晶。再结晶晶粒的平均晶粒尺寸达到3μm,抗拉强度可达310 MPa,伸长率达30.7%。然而,经过同样时间的等效热处理,变形ZK60板并未发生完全再结晶。脉冲电流提高了轧制变形ZK60镁合金再结晶形核速率,加速了再结晶转变过程。脉冲处理优化了ZK60镁合金组织,使其获得了较高的综合力学性能。
The microstructure and properties of ZK60 magnesium alloy sheet were analyzed by OM, EBSD and SEM. The use of high-density pulse current rolling deformation of ZK60 magnesium alloy plate processing, the deformation of the organization in a relatively short period of time completely recrystallized. The average grain size of recrystallized grains reaches 3μm, the tensile strength can reach 310 MPa and the elongation reaches 30.7%. However, after equivalent heat treatment at the same time, complete deformation of the ZK60 plate did not occur. Pulse current improves the recrystallization nucleation rate of ZK60 magnesium alloy and accelerates the recrystallization transformation process. The pulse treatment optimized the ZK60 magnesium alloy structure and made it obtain higher comprehensive mechanical properties.