ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Simulation of Crack Formation on Solidifying Steel Shell in Continuous Casting Mold
Chong Hee YuMikio SuzukiHiroyuki ShibataToshihiko Emi
Author information
JOURNALS FREE ACCESS

1996 Volume 36 Issue Suppl Pages S159-S162

Details
Abstract

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.

Information related to the author
© The Iron and Steel Institute of Japan
Previous article Next article
feedback
Top