リムド鋼板の深絞り性におよぼす C 量の影響

概要

論文の詳細を見る
The deep drawability (R^^^--value) was studied in rimmed steel sheets melted in air. The variables examined were the carbon content, the cold rolling reduction (50∿90%) and annealing conditions (700°and 800℃×5hr in non-decarburizing atmosphere and 750℃×10hr in decarburizing atmosphere). The following results have been obtained : 1. The R^^^--value not only has the well-known dependence upon the texture but also the depen-dence upon the grain size d, which can be expressed by the formula. R^^^-=R^^^-_0+k(d^<-1/2>-d_0^<-1/2>) In this formula, (1) the R^^^-_0-value at the completion of recrystallization is mainly determined by cold rolling reduction and carbon content ; (2) ∣k∣ is almost constant at 50∿80% cold reduction, and decreases over 85% ; (3) (d^<-1/2>-d_0^<-1/2>) (the term expressing the effect of grain growth after the completion of recry-stallization) is affected by the factors such as carbon and oxygen contents and annealing conditions ; (4) the high R^^^--value can be obtained in the low-carbon material in non-decarburizing annealing condition, and in the high carbon (that is low oxygen) material in the decarburizing condition ; and (5) the R^^^--value of the low carbon material can be raised through the increase in R^^^-_0 and that of the high carbon material through the increase in ∣d^<-1/2>-d_0^<-1/2>∣. 2. When carbon content is low or annealing temperature is high, the cold rolling reduction for getting maximum R^^^--value is high.
社団法人日本鉄鋼協会の論文
1970-01-01

リムド鋼板の深絞り性におよぼす C 量の影響

スポンサーリンク

概要

著者

関連論文

スポンサーリンク