けい素鉄単結晶の切削現象

Abstract

This paper describes some experiments with the deformed regions produced in Fe-3.14%Si alloy single crystals by orthogonal cutting, in which dislocation etch pit pattern method was employed. It also deals with the changes of both micro-Vickers hardness and crystal orientation. Two pass cuttings were carried out from the point of practical interest. The following results were obtained by the observation:(1) The visual survey on the deformed regions were brought by etch pit method.(2) In deformed layers, it was observed that the crystal orientations were tend to align to some specific directions. Cutting such oriented crystals, the deformed layers were narrower.(3) From the observation of slip systems acted in cutting process, the deformation mechanisms were seemed to be influenced by rake angle.(4) The regions in which the dislocation etch pit pattern were observed became narrower in second cutting than first cutting, but the work hardened values were similar in both cases.