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为使电塑性效应推广到生产应用 ,研究了奥氏体不锈钢 17- 6 Mn在变速拔丝时的电塑性效应。实验中对 17-6 Mn的拔丝速度从 9m/ min逐渐提高到 6 0 m/ m in,此速度与生产中的粗丝的拔丝速度相近。实验发现 :高能脉冲电流的引入使拔制应力降低 ,并使材料的塑性提高 ;但是电塑性效应随拔丝速度的提高而逐渐减弱。对 17- 6 Mn钢丝的磁学性能的测量表明 :脉冲电流的引入使饱和磁感应强度 Bs和剩磁 Br明显降低。这表明 ,电脉冲的引入对于材料塑性中的形变诱发相变有较大的抑制作用。
In order to extend the electric and plastic effect to production and application, the electroplasmic effect of 17-6 Mn austenitic stainless steel during variable speed wire drawing was studied. In the experiment, the wire drawing speed of 17-6 Mn was gradually increased from 9 m / min to 60 m / m in, which is close to the drawing speed of the coarse filaments in production. The experimental results show that the introduction of high-energy pulsed current reduces the drawing stress and improves the plasticity of the material; however, the electrical and plastic effects gradually decrease with the increase of the drawing speed. Measurement of the magnetic properties of 17-6 Mn steel wire shows that the introduction of pulse current decreases the saturation magnetic flux density Bs and remanence Br remarkably. This shows that the introduction of electrical impulses has a greater inhibitory effect on the deformation-induced phase transition in the plasticity of materials.