大型炭素鋼鋼塊のΛ偏析帯に就て(IV)
偏析線欠陥と偏析きず
1956 年 42 巻 5 号 p. 383-391
詳細
1956 年 42 巻 5 号 p. 383-391
It was found in the first report that there were some times defects in segregated line of ingot such as sands and cavities appeared at the time of ingot solidification. In the course of forging, some of them disappeared by forging effect, while some of them remained as flaws in forged steel. The opinion that the latter are nothing but segregation-flaws of forging, is born out from comparing the result of observation about defects in segregated line of ingots with that about segregation-flaws of forging. In order to confirm this opinion, the author makes a complementary consideration about defects in segregated line of ingots, and investigates behaviours of defects in ingots and those of segregation-flaws in the course of forging and tries to describe theoretically the relation between segregation-flaws and type of annular segregations. Finally he describes the methods of reducing segregation-flaws on the basis of above-mentioned opinion in the form of conclusion.
