微变形量冷轧金属箔材时质点流动与加工软化现象的研究

来源期刊：中南大学学报(自然科学版)1983年第4期

论文作者：王曼星 宋冀生 马继伦 朱玉佩 唐少平 刘志峰

文章页码：30 - 36

关键词：微变形量冷轧； 质点流动； 加工软化； 金属箔； 低碳钢； 轧件宽度； 宽展； 碳化物； 珠光体； 层状组织

摘    要：实验发现金属箔片经微变形量冷轧,轧件存在前端影响优势区和出现强度、硬度降低,塑性增高的自行软化现象。研究认为轧件质点流动异常景象是前刚端与变形区摩擦阻力共同作用的结果;加工组织自行软化现象是材料在长时期低应力场作用下珠光体中碳化物由高能的片层状组织趋向低能球状组织的结果。

Abstract: It has been found by experiments that there exist a superior zone under the influence of the front end and self-softening phenomenon, that is, a decrease of the strength and hardness and an increase of plasticity after microdeformation cold rolling for thin sheet metal. It is considered by the authors that the strange phenomenon of particle flow in rolled piece results from the common action of the front end with resistance to friction and that self-softening of the working structure results from a laminated structure of high energy to a spherical structure of low energy of the carbonide in pearlite under the action of low stress for a long time.