摘要二氧化铁是一种廉价的结构材料，由于耐受性强，容易受到冲击，对烟雾的敏感性低，切割和熔炼性能优良，在汽车、农业机械和冶金机械等领域广泛使用。计算表明，当石墨演变球形到椭球的形式，石墨的形状变化可以减轻应力集中在基体中的石墨效果时，外部的应力的方向平行于长椭圆形的轴。在球形铁的热变形的方法中，石墨的塑性变形是由于基体的摩擦，使得在从所述主流可变电压的方向上延伸的石墨。石墨由球形变化优化轧制参数后，与铸态球墨铸铁相比，坯料的抗拉强度提高了 26.5％，尤其是采样方式对平行方向的影响。平行轧制方向（纵向）板坯的抗拉强度比垂直轧制方向（横向）高18.9％，伸长率高 13.3％最后，本文进行了球墨铸铁球磨锻余残余热淬火实验，与常规淬火球墨铸铁磨球和铬铸铁磨球相比，锻造余热淬火球墨铸铁磨球马氏体结构由于继承变形奥氏体和完全精制的位错结构，磨边球的硬度值比传统淬火磨球高出 5.3％。关键词:球墨铸铁;塑性变形;石墨;形变诱导相变;锻造;轧制AbstractIron dioxide is a cheap structural material that is widely used in the fields of automobiles, agricultural machinery and metallurgical machinery due to its strong tolerance, vulnerability to shock, low sensitivity to smog, and excellent cutting and smelting properties. Calculations show that when graphite evolves into the form of an ellipsoid, the shape of the graphite changes to reduce the stress concentration in the matrix of the graphite effect when the external stress direction is parallel to the for long oval axis. In the method of thermal deformation of spherical iron, the plastic deformation of graphite is due to the friction of the substrate, which makes graphite extending in the direction of the mainstream variable voltage. After the rolling parameters are optimized by spherical variation, the tensile strength of the billet is increased by 26.5% compared with that of cast ductile iron, especially the influence of sampling mode on the parallel direction. The tensile strength of the parallel...
