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首页> 外文期刊>Journal of Materials Engineering and Performance >Determinations of the Non-Recrystallization Temperature for X52 Steel Produced by Compact Slab Process Combined with Direct Hot Rolling
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Determinations of the Non-Recrystallization Temperature for X52 Steel Produced by Compact Slab Process Combined with Direct Hot Rolling

机译：紧凑板坯工艺直接热轧联合生产的X52钢非再结晶温度的确定

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摘要

Deformation comprises not only dimensional accuracy but also the control of the final microstructure and mechanical properties. Deformation below the non-recrystallization temperature (T_(nr)) is important to design the proper rolling schedule to avoid grain growth in the final stages of rolling. The determination of T_(nr) for Nb-bearing carbon steel with a compact slab process mill log is carried out depending upon the Misaka concept calculation. A comparison among different formulas for predicting the T_(nr) was conducted using Misaka, Bratto, and Jonas equations. The Misaka equation depends on the chemical compositions and deformation parameters including dynamic and metadynamic recrystallization. The Bratto equation considers only the steel chemical composition. The Jonas equation depends only on the accumulated strain. The Bratto equation gives a large value of T_(nr), while the Misaka equations show a moderate and accurate value in relation to the Jonas results, which depend on torsion tests. The effect of strain accumulation on dynamic recrystallization is investigated to predict the final grain size of ferrite.
机译：变形不仅包括尺寸精度，还包括最终微观结构和机械性能的控制。低于非重结晶温度（T_（nr））的变形对于设计适当的轧制程序以避免在轧制的最后阶段晶粒长大很重要。根据Misaka概念的计算，用紧凑的板坯工艺轧机测井确定含Nb的碳钢的T_（nr）。使用Misaka，Bratto和Jonas方程对预测T_（nr）的不同公式进行了比较。 Misaka方程取决于化学成分和变形参数，包括动态和亚动态重结晶。 Bratto方程仅考虑钢的化学成分。乔纳斯方程仅取决于累积应变。 Bratto方程的T_（nr）值较大，而Misaka方程的Jonas结果则显示出适中且准确的值，这取决于扭转试验。研究了应变积累对动态再结晶的影响，以预测铁素体的最终晶粒尺寸。

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