Study of concast steels plasticity in low-temperature region

✍ Scribed by I. Schindler; J. Kliber; J. Bořuta

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 453 KB
• Volume: 34
• Category: Article
• ISSN: 0924-0136
• DOI: 10.1016/0924-0136(92)90111-5

✦ Synopsis

At bending and straightening the continuous cast steel semi-products, there can transverse cracking occure. The relation between strand temperature and course of repeated austenite/ferrite transformation is one of the most important circumstances influencing that phenomenon.

At plain carbon Al-killed steel, deformation taking place by strain rate of order i0-4 s-I was simulated using the computer-controlled torsion plastometer. There was compared its plasticity at constant deformation temperatures and/or at temperatures cycling within +50 °C (by help of special software, the combined effects of water spray cooling and heat conduction inside the strand were simulated). There was established that such temperature regions exist, in which a temperature oscillation and thus induced periodical course of transformation processes improve the resistance of material to transverse cracking. If do not holding to some specific conditions, temperature oscillation on the contrary deteriorates plasticity.

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