冷延低炭素鋼板の再結晶に及ぼす V および N 添加の影響

概要

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Recrystallization of cold rolled steels with approximately 0.02wt% nitrogen and with vanadium is to a large extent affected by the variation of vanadium content. When the ratio of vanadium content (C_V) to nitrogen content (C_N) is approximately 1, that is C_V (a/o)/C_N (a/o)≈1, recrystallization is much retarded ; in the strip annealed for 3 hours at 750℃, unrecrystallized parts are found under an electron microscope. The annealing texture shows high concentrations around the (100) and (112) poles, and is rather similar to a cold rolling one. The steels have small grains, high yield points, and small elongations. When C_V/C_N≈10, the recrystallization of steels occurs more easily than that of the steels containing vanadium at the ratio of about C_V/C_N≈1. The annealing texture is composed mainly of {111}<110>+{111}<112> orientations. Similar but small effects are also observed by vanadium addition in the steels with approximately 0.002% nitrogen.
社団法人日本鉄鋼協会の論文
1972-10-01