低炭素高速度鋼に就て

概要

論文の詳細を見る
The ordinary high speed steel usually contains about 0.6% carbon, while Mr. Rinpei Kikuchi has laid stress on the supriority of high speed steels with about 0.25% C. The author tried to ascertain if such temper-hardening of the low-carbon high speed steel has a mechanism similar to that of the heretofore current high speed steels. A low-carbon high speed steel containing 0.26% C, 3.08% Cr, 22.2% W and 17.5% Co was examined with reference to the change of hardness, thermal expansion and specific resistance in accordance with tempering in order to study its temper-hardening mechanism. The result revealed that the temper-hardening mechanism of the low-carbon high speed steel is quite different from that of the ordinary high speed steel ; and that the matrix which causes precipitation is the martensitic over-saturated alpha-crystals while the temper-hardening is due similarly to the precipitation of carbides.
社団法人日本鉄鋼協会の論文
1941-05-25