Phase transformations in two C-Mn-Si-Cr dual phase steels
Phase transformations in two C-Mn-Si-Cr dual phase steels
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DOI：
10.2355/isijinternational.46.1489
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发表时间：
2006-01-01
影响因子：
1.8
通讯作者：
Ray, R. K.
中科院分区：
文献类型：
--
作者：
Murugaiyan, A.;Podder, A. Saha;Ray, R. K.
研究了双相钢的连续冷却转变行为，着重研究了铬含量、冷却速度和亚温退火温度对奥氏体不同转变产物体积分数的影响。结果表明，添加0.21%的铬促进了最终组织中针状产物的形成，但对亚温退火时共存相的体积分数影响不大。基于Avrami方程和Scheil可加性原理建立了一个数学模型，预测了一种连续冷却钢中多边形铁素体体积分数随冷却速度的变化。模型的预测结果与实验结果吻合较好。
The continuous cooling transformation behaviour of dual phase steels were studied with emphasis on the effects of addition of chromium, cooling rate and intercritical annealing temperature on the volume fractions of different transformed products of austenite. The results show that addition of 0.21 % chromium promotes the formation of acicular products in the final microstructure and does not have much effect on the volume fractions of the co-existing phases at intercritical annealing temperatures. A mathematical model based on Avrami's equation and Scheil's additivity principle was developed to predict the volume fractions of polygonal ferrite as a function of cooling rate for one of the continuous cooled steels. The predicted results from the model show good agreement with experimental observations.