木工刀具的显微组织与性能

木工刀具性能与其显微组织关系密切．显微组织组成物晶粒细小，形状圆正，分布均匀，均有利于刀具获得优良性能，当刀具性能要求强调高硬度与适当韧性配合时，尤应避免晶粒粗大以及微裂纹等显微组织缺陷；当刀具性能要求突出高硬度和耐磨性时，其显微组织中硬化相相对量要多，并力避出现软组织等显微组织缺陷．

Discussion of Cutting-wood-tool''''s Micro-organization and Function

There is close relationship between cutting-wood-tool and its microorganization. Generally speaking, a good cutting performance benefits from the component, smaller size, roundness and well-distribution of the grain in microorganization. When high hardness fitting in with right toughness in the cuttingwood-tool's function is required, some defects, such as big grain and micro-crackle, should be avoided. While high hardness and wearability are needed, the hardness phase in micro-organization should be contained much more, and the defect, like soft organization, should be avoided.