温度傾斜場における引張り・曲げ試験による鋼の凝固シェル割れ発生限界ひずみの測定

概要

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Crack formation on a continuously cast slab surface was simulated with a new equipment for hot tensile and bending tests under temperature gradient field. Hot side of the test-piece was induction heated to its zero strength temperature and cool side was controlled to a temperature corresponding to shell surface temperature in continuous casting mold. Fine cracks were found to form at the hot side of the tensile test-piece during straining. The critical strain for the crack formation is dependent on the carbon content, measuring 2% for peritectic medium carbon steel, 1.5% for ultra low carbon steel and about 1% for low carbon, high strength medium carbon and high carbon steels.continuous castingsolidified steel shellinternal crackcritical straintemperature gradienttensile testbending test
東北大学の論文
1997-03-28