Page 83 - 国外钢铁技术信息内参（2022年8月）

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（五）中碳钒微合金钢不同热轧规程的损伤预测

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S. Ganguly , M. F. Buchely , F. Okanmisope , K. Chandrashekhara , S. N. Lekakh , R.
J. O5Malley , J. Heerema 3
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（1.密苏里科技大学机械与航空航天工程系；
2. 密苏里科技大学材料科学与工程系；

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3Peaslee 钢铁制造研究中心（PSMRC））

摘要：钢在热轧过程中，如果工艺控制不当，钢材受到大变形，可能导致产品缺 ᇏݓࣁඋ࿐߶
陷。因此，预测材料轧制过程中可能影响产品质量的不可逆损伤条件至关重要。

有限元（FE）模拟是模拟热轧到最终产品形状的变形过程的首选工具。本文通

过高温力学试验确定了中碳钒微合金钢的实验 Johnson-Cook（JC）强度和损伤模

型参数。开发了两种不同的工业热轧棒材规程有限元模型：i）方形到圆形和 ii）

圆形到圆形。利用有限元模拟，比较了两种轧制规程，预测了损伤萌生概率高的

区域的位置，并确定了关键轧制道次。
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关键词：热轧、有限元、质量流

Prediction of Damage During Different Hot Rolling

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Schedules of Medium-Carbon V-Microalloyed Steel

ABSTRACT：During hot rolling of steel, the material is subjected to a high degree of

deformation which could lead to defects in the product if the process is not well

controlled. Therefore, it is vital to predict the conditions of irreversible damage in the

rolled material that could affect product quality. Finite Element (FE) simulations are

the preferred tool to simulate the progression of deformation steps in hot rolling to the

final product shape. In this work, experimental Johnson-Cook (JC) strength and

damage models parameters were determined using high-temperature mechanical tests

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of medium carbon V micro alloyed steel. FE models were developed for two different
industrial hot rolling bar schedules: i) square to round and, ii) round to round. Using

the simulations, both rolling schedules were compared, the locations of regions with a

CSM 中国金属学会 CMISI 冶金工业信息标准研究院
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