微量 Mo 添加一方向性珪素鋼の Goss 粒核発生状況(二次再結晶)(<特集>再結晶・粒成長)

概要

論文の詳細を見る
Transmission KOSSEL (TK) technique has been applied in an attempt to elucidate the origin of the potential nuclei of the celebrated (110)[001] secondary grains in hot-rolled sheets of high induction grain oriented silicon steel with or without a small amount of Mo. In the microstructure in the vicinity of the surface of the hot-rolled sheets, the development of the recrystallized grains is much more noticeably retarded and the polygonized {110}<001> grains elongated to the rolling direction are more preferentially formed in Mo added steel than in that of free from Mo. By TK measurement, two kinds of polygonized {110}<001> grains are found at the 1/10 depth ; large polygonized (110)[001] grains containing the highly oriented (110)[001] areas with sharpened TK patterns and small polygonized {110}<001> grains with all the diffused TK patterns. The potential nuclei of (110)[001] secondary grains can be inherited by the structure memory from the highly oriented (110)[001] areas within the former large polygonized (110)[001] grain. The frequency of generation and the rate of occupation of (110)[001] secondary nuclei of the hot-rolled sheet containing a small amount of Mo are approximately three times larger than those of free from Mo. It is considered that grain oriented silicon steel containing a small amount of Mo is more effective in the development of (110)[001] secondary grains having small grain sizes.
社団法人日本鉄鋼協会の論文
1984-11-01