Recovery of hot ductility by improving thermal pattern of continuously cast low carbon and ultra low carbon steel slabs for hot direct rolling

Mikio Suzuki, Chong Hee Yu, Hiroyuki Shibata, Toshihiko Emi

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Continuously cast low carbon and ultra low carbon steel slabs with low Mn/S ratio processed via hot direct rolling route tend to form more surface defects than those via hot charge rolling route. The slab low in Mn/S ratio exhibit poor ductility during hot direct rolling at elevated rolling temperatures and high strain rates. Various thermal patterns have been investigated with hot tensile test to find a suitable one to recover the hot ductility of these slabs in hot direct rolling. When they are once cooled to α-ferrite temperature range and subsequently reheated to austenitic temperature range, remarkable recovery of the hot ductility has been found to occur. This recovery is attributed to the recrystallization of prior austenitic grains which transform first into α-ferrites then to new austenitic grams, leaving manganese sulfides which existed at the prior austenite boundaries not to precipitate at the recrystallized new austenite boundaries.

本文言語English
ページ(範囲)862-871
ページ数10
ジャーナルIsij International
37
9
DOI
出版ステータスPublished - 1997

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

フィンガープリント

「Recovery of hot ductility by improving thermal pattern of continuously cast low carbon and ultra low carbon steel slabs for hot direct rolling」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル