形变热处理强化是提高机器零件结构强度的最有效途径之一。但对某些高强使轴承钢进行高温形变热处理时,却甚至会降低轴承的寿命。研究这种现象的原因时,不仅必须考虑材料强度性能的变化,还应考虑到材料的塑性。在保证得到相同硬度和强度的情况下,不同的形变热处理规范会引起塑性的 Deformation heat treatment is to enhance the structural strength of the machine parts, one of the most effective way. However, some high-strength bearing steel for high temperature heat treatment, but it will even reduce the bearing life. The reason for this phenomenon, not only must consider the material strength and performance changes, but also should take into account the plasticity of the material. In ensuring the same hardness and strength of the case, the different deformation heat treatment specifications will cause plastic