Austenite Grain Size of Thin Slab and its Influence on Direct Hot Strip Rolling of Nb Microalloyed Steel

机译：薄板坯奥氏体晶粒度及其对Nb微合金钢热轧直接轧制的影响

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In the production with thin slab casting a serious problem of insufficient grain refinement and microstructural inhomogeneity has been found. In this paper attention has been paid to the austenite grain size changes in thin slab of a high strength Nb microalloyed steel under as-cast conditions and after first rolling pass. For comparison, the conventional thick slab was also investigated. It was found that although as-cast thin slab shows a smaller average austenite grain size than that of as cast thick slab; the latter after reheating shows a much finer average austenite grain size. The first rolling pass at high temperature and with heavy reduction causes rapid recrystallization that contributes to austenite grain refinement.

机译：在薄板坯铸件的生产中，已经发现严重的问题，即晶粒细化不充分和微观结构不均匀。在本文中，已经关注了高强度Nb微合金钢在铸态和第一次轧制后的薄板中奥氏体晶粒度的变化。为了比较，还研究了常规的厚板。结果发现，虽然铸薄板坯的平均奥氏体晶粒尺寸比铸厚板坯的小。后者在重新加热后显示出更精细的平均奥氏体晶粒尺寸。高温下大量轧制的第一道次轧制会导致快速重结晶，这有助于奥氏体晶粒细化。

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来源
《International Conference on Microalloying for New Steel Processes and Applications; 20050907-09; Basque Country(ES)》|2005年|P.295-300|共6页
会议地点 Basque Country(ES)
作者
Zhang Hongtao; Pang Ganyun; Wang Ruizhen; Liu Chengbin;
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作者单位

Research Institute of Structural Materials, CISRI, 76 Xueyuan Nanlu, Beijing 100081, China;

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原文格式 PDF
正文语种 eng
中图分类冶炼方法;
关键词
thin slab; direct hot rolling; Nb microalloyed steel; austenite grain size; grain refinement of austenite;

机译：薄板坯；直接热轧；铌微合金钢；奥氏体晶粒度；奥氏体晶粒细化;

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1. Modeling of Austenite Grain Size Distribution in Nb Microalloyed Steels Processed by Thin Slab Casting and Direct Rolling (TSDR) Route [J] . P. URANGA, A. I. FERNANDEZ, B. LOPEZ, ISIJ international . 2004,第8期

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2. Modeling of austenite grain size distribution in Nb microalloyed steels processed by thin slab casting and direct rolling (TSDR) route [J] . Uranga P, Fernandez AI, Lopez B, ISIJ international . 2004,第8期

机译：薄板坯连铸和直接轧制（TSDR）工艺处理的铌微合金钢中奥氏体晶粒尺寸分布的模型
3. Study of Grain-Growth Kinetics in Delta-Ferrite and Austenite with Application to Thin-Slab Cast Direct-Rolling Microalloyed Steels [J] . TIHE ZHOU, RONALD J. O’MALLEY, HATEM S. ZUROB Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2010,第8期

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4. Austenite Grain Size of Thin Slab and its Influence on Direct Hot Strip Rolling of Nb Microalloyed Steel [C] . Zhang Hongtao, Pang Ganyun, Wang Ruizhen, International Conference on Microalloying for New Steel Processes and Applications . 2005

机译：甲型石粒度薄板坯及其对Nb微合金钢直接热带轧制的影响
5. Modeling of thermomechanical and metallurgical phenomena in steel strip during hot direct rolling and runout table cooling of thin-cast slabs. [D] . Muojekwu, Cornelius Anaedu. 1998

机译：薄板坯热直接轧制和跳动工作台冷却过程中钢带的热机械和冶金现象的建模。
6. Datasets acquired with correlative microscopy method for delineation of prior austenite grain boundaries and characterization of prior austenite grain size in a low-alloy high-performance steel [O] . V. Sinha, M. Gonzales, E.J. Payton 2019

机译：用相关显微镜方法获得的数据集用于描绘低合金高性能钢中的奥氏体晶界和表征奥氏体晶粒度
7. EVOLUTION OF THE AUSTENITE GRAIN SIZE DURING HOT STRIP ROLLING OF NIOBIUM MICROALLOYED STEELS [O] . Antonio Augusto Gorni, Marcos Roberto Soares da Silva 2015

机译：铌微合金钢热轧带钢奥氏体晶粒尺寸的演变
8. Modelling of Precipitate and Austenite Evolution during Hot Working of Nb-Microalloyed Steels [R] . Siwecki, T., Wiese, H. 1995

机译：Nb-微合金钢热加工过程中析出和奥氏体演变的模拟

Austenite Grain Size of Thin Slab and its Influence on Direct Hot Strip Rolling of Nb Microalloyed Steel

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