纯钼热轧至1.5毫米的板材,经1100℃30分钟再结晶退火后于300℃进行10%的轧制变形,最后在室温下进行不同程度的拉伸变形,用近似函数法对位错密度进行计算,结合透射电镜观察及(100)、(110)晶面平行于拉力轴取向的机率密度的测定结果,对预变形改善再结晶钼的低温塑性和降低高温塑性的原理进行了研究。 Pure molybdenum hot-rolled to 1.5 mm plate, recrystallized and annealed at 1100 ℃ for 30 minutes after 10% of the rolling deformation at 300 ℃, and finally at room temperature for varying degrees of tensile deformation, the approximate function method of dislocation density Based on the results of transmission electron microscopy and the measurement of the (100) and (110) plane orientations parallel to the tensile axis, the principle of preforming to improve the low temperature plasticity and the high temperature plasticity of recrystallized molybdenum was studied.