テルライドその他の快削性介在物を含有する軟鋼の切削挙動の微視的観察(鉄鋼材料の組織・性質)

概要

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Some metallurgical observation and discussion were made upon the machining behaviors of mild steel samples containing free-cutting additives : telluride, sulfide, selenide, lead and/or bismuth. A specially devised tool holder was employed in order to obtain the cutting part of work sample with built-up edge. A part of free-machining mechanism of the tellurided steel samples at the cutting speeds around 60m/min was discussed based on the results from the observation with the optical- and electron-microscope as well as from the measurements of mechanical properties at various temperatures. Observed electron-microscopic substructure of a cut chip of a sample showed a peculiar subcell feature presumably caused by fast dynamic recovery of extremely strained ferrite.
社団法人日本鉄鋼協会の論文
1968-03-01