Simulation of crack formation on solidifying steel shell in continuous casting mold

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

研究成果: Article査読

31 被引用数 (Scopus)

抄録

Stress-strain data of continuously cast (CC) steel at high temperatures available in the past are based on uni-axial tensile tests in a uniform temperature field, the data being utilized for thermal stress analysis to simulate crack formation on a CC-slab surface. New equipment for hot tensile and bending tests has now been developed by the authors that allows determination of more realistic stress-strain behavior of the solidifying shell subjected to temperature gradients similar to those in a CC-mold. Key factors affecting crack formation have been studied with this equipment. Fine cracks were found to form at the hot side of the tensile test-piece during straining. These cracks are initiated at grain boundaries which are located on the previous interdendritic solute-segregated region. The critical strain for the crack formation is independent of the strain rate within the range of 5-50 × 10-4s-1, depending on the carbon content, measuring 2% for peritectic carbon steels, 1.5% for ultra low carbon steels and about 1% for low, middle and high carbon steels.

本文言語English
ページ(範囲)S159-S162
ジャーナルIsij International
36
SUPPL.
DOI
出版ステータスPublished - 1996

ASJC Scopus subject areas

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

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