焼ならしした中炭素鋼の引張性質におよぼす Si および Mn 量の影響

概要

論文の詳細を見る
Effects of Si and Mn additions on the tensile properties of medium carbon steels have been investigated to assess the utility as non-hardened high strength steels. Results concerning 0.3% C-Si-Mn steels are summarized as follows : (1) The tensile strength increases 9.5kg/mm^2 per 1% of Si+Mn up to the transitional value of 1.7% Mn, over which the strength is raised only with a rapid fall of elongation due to low temperature transformation. (2) The larger the Si/Mn ratio in the steels up to about 6, the higher strength can be obtained with little decrease of elongation, so far as the steels keep ferrite-pearlite structure. (3) The limit to strengthen these steels holding at least 18% elongation is estimated to about 90 and 70kg/mm^2 for tensile and yield strengths respectively. Concerning with 0.47% C-Si-Mn steels. (4) The larger the Si/Mn ratio up to about 2, the higher elongation can be obtained. (5) The limit to strengthen these steels holding at least 18% elongation is estimated to about 97 and 63kg/mm^2 for tensile and yield strength respectively.
社団法人日本鉄鋼協会の論文
1973-01-01