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在扫描电镜中直接观察研究了半球形金钢石单点压头在平板试样表面上的磨粒磨损过程,表明;犁沟模式向堆积形成模式迁移的临界侵入比的变化与平板试样的硬度无关,而从堆积形成模式向切削模式迁移的临界侵入比却随试样硬度的提高而减小,堆积形成及切削磨损的磨损率则随硬度的增大而提高。对硬度相同的下贝氏体及回火屈氏体试样研究表明;随侵入比的增加二者的磨损形态都发生迁移,但是下贝氏体试样明显地落后于回火屈氏体,在相同的条件下回火屈氏体试样的磨损率高于下贝氏体试样,尤其在切削模式时二者相差达15～20％。
In the scanning electron microscope, the wear process of the hemispherical diamond single point indenter on the surface of the flat specimen was observed and observed directly. The results showed that the change of the critical invasion ratio of the furrow pattern to the accumulation mode was similar to that of the flat specimen However, the critical invasion ratio from deposition mode to cutting mode decreases with the increase of the hardness of the specimen. The wear rate of the deposition and cutting wear increases with the increase of the hardness. The study of the lower bainite and tempered troostite samples with the same hardness showed that both the wear patterns of the lower and the bainite samples migrated with the increase of the penetration ratio, but the lower bainite samples obviously lagged the tempered troostite, Under the same conditions, the wear rate of tempered troostite samples is higher than that of the lower bainite samples, especially when the cutting mode is between 15 and 20%.