Simulation of transverse crack formation on continuously cast peritectic medium carbon steel slabs

Mikio Suzuki, Hiroshi Hayashi, Hiroyuki Shibata, Toshihiko Emi, In Jae Lee

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Reliable data are limited to the critical strain for the formation of transverse cracks on the slabs, owing to experimental difficulty to simulate temperature gradient in solidified shell in continuous casting mold. The present study is to determine the critical strain, εc, for the formation of transverse cracks on continuously cast slabs. A convenient and simple hot tensile test using rectangular test pieces with either V-notch or semi-circle notch or oscillation marks has been developed by placing the specimen under similar temperature gradient to that in solidified shell in the mold. The εc has been determined at a better accuracy and reproducibility, and the εc at a strain rate of 5·10-4 s-1 is found to be a high 35% for test pieces without notch. It sharply decreases, however, to 10% for those with V- and semi-circle-notches, slightly decreases with increasing notch depth, and further decreases for those with oscillation marks that accompany solute segregation. Reduction of the oscillation mark depth is shown to be important measure to prevent the occurrence of transverse cracking of continuously cast slabs.

本文言語English
ページ(範囲)412-419
ページ数8
ジャーナルSteel Research
70
10
DOI
出版ステータスPublished - 1999 10
外部発表はい

ASJC Scopus subject areas

  • 金属および合金

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