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利用自制的钢流变力学测定装置,首次对碳钢铸坯凝固两相区的流变特性进行了实验研究,获得了其在不同载荷下的蠕变/反蠕变曲线,并由此确立了该合金的流变模型。结果表明:该合金在近固相线及近液相线温区为五元流变模型,而在中间温区为粘弹塑性六元流变模型。文中基于流变模型进一步获得了铸坯在凝固两相区不同阶段的蠕变方程。
The rheological properties of the solidified two-phase region of a carbon steel slab are experimentally studied for the first time by using a self-made steel rheological mechanical measuring device, and the creep / anti-creep curves under different loads are obtained, and thus the The rheological model of the alloy. The results show that the alloy is a five-element rheological model near the solidus and near-liquidus temperature, and a visco-elastoplastic six-element rheological model at the intermediate temperature. Based on the rheological model, the creep equation of the slab at different stages of the solidified two-phase zone is further obtained.