Plain strain deformation is performed on solid steel samples at 1473 K and semi-solid samples at 1743 K. The deformation of inclusions under the reductions of 10%, 20%, and 30% is studied. In the solid steel, the average aspect ratio of inclusions increases from 1.23 in the original slab to 2.07, 2.23, and 2.30 under the reduction of 10%, 20%, and 30%. The deformation of inclusions in the semi-solid steel, which is much smaller than that in the solid steel, is hardly influenced by the reduction. Inclusion deformation is explained by the difference of hardness between the inclusion phase and the steel matrix. Though inclusions in steel samples deformed at 1473 K are a little harder than those in steel samples deformed at 1743 K due to the thicker CaS shell formed by the transformation of inclusion composition. Stress–strain curves indicate that the semi-solid steel matrix at is much softer. In the semi-solid steel at 1743 K, the soft steel matrix deforms more than inclusions, leading, in turn, to a smaller deformation of inclusions.

中文翻译：

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压缩减少对固态和半固态钢中 CaO-CaS-Al2O3-MgO 夹杂物变形的影响

对实心钢样品在 1473 K 和半固态样品在 1743 K 下进行平面应变变形。研究了夹杂物在 10%、20% 和 30% 压下率下的变形。在实心钢中，夹杂物的平​​均纵横比在压下量为10%、20%和30%的情况下，从原始板坯的1.23增加到2.07、2.23和2.30。半固态钢中夹杂物的变形比实心钢小得多，几乎不受压下量的影响。夹杂物变形是用夹杂物相和钢基体之间的硬度差异来解释的。尽管在 1473 K 变形的钢样品中的夹杂物比在 1743 K 变形的钢样品中的夹杂物稍硬，这是由于夹杂物成分转变形成的更厚的 CaS 壳。应力-应变曲线表明，半固态钢基体要软得多。在 1743 K 的半固态钢中，软钢基体比夹杂物变形更多，进而导致夹杂物变形更小。