日本金属材料技术研究所对改善钢的断屑性能进行了研究、发现混杂有马氏体组织的钢的断屑性能优越。 图1表示了这种混杂有马氏体的钢的硬度与其切屑形状之间的关系。过去一贯认为,提高钢的硬度或者在高速切削中增大切屑剪切角、就容易产生连续的薄切屑,这些 Japan Institute of Metal Materials Technology to improve the performance of the steel chip breaking research and found that mixed with martensite steel breaking superior performance. Figure 1 shows the relationship between the hardness of this martensitic steel and its chip shape. In the past, it has always been thought that increasing the hardness of the steel or increasing the chip shear angle during high-speed cutting tends to produce continuous thin chips, which