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首页> 外文期刊>ISIJ international >Prediction of Ferrite Grain Size after Warm Deformation of Low Carbon Steel
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Prediction of Ferrite Grain Size after Warm Deformation of Low Carbon Steel

机译：低碳钢热变形后铁素体晶粒尺寸的预测

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摘要

When deformation is carried out near the A_1 temperature in low carbon steel, ferrite recrystallisation appears to be the dominant mechanism in controlling the grain size. The present investigation has shown the dominance of ferrite recrystallisation at low temperatures between 665-690℃ by the application of an austenite recrystallisation power law on experimentally measured grain sizes in 0.05% C steel. Comparison has also been made between predictions using this power law and the experimentally measured grain size after deformation in the two phase (α + γ) region. The results show that the ferrite grain size is influenced significantly by the relative proportions of γ and α phases within the structure just prior to deformation. In addition the good correlation found between predicted and measured grain sizes indicates that ferrite recrystallisation dominates between 850-690℃. Despite this, the possibility still exists for the occurrence of a transformation induced mechanism within this temperature region.
机译：当在低碳钢中在A_1温度附近进行变形时，铁素体再结晶似乎是控制晶粒尺寸的主要机理。目前的研究表明，通过在0.05％C钢中实验测量的晶粒尺寸上应用奥氏体再结晶幂律，在665-690℃的低温下铁素体再结晶占主导地位。使用此幂定律的预测值与在两相（α+γ）区域变形后实验测量的晶粒尺寸之间也进行了比较。结果表明，恰好在变形之前，铁素体晶粒尺寸受到结构中γ和α相的相对比例的显着影响。另外，在预测晶粒尺寸和实测晶粒尺寸之间具有良好的相关性，这表明在850-690℃之间，铁素体再结晶占主导地位。尽管如此，在该温度区域内仍存在发生转变诱导机理的可能性。

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