Influence of soaking temperature on microstructure of multi-pass compression deformation for low carbon steels |
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Authors: | Yan-lin He Xiao-yu Wu Na-qiong Zhu Mei Zhang Da-wei Lin and Lin Li |
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Institution: | Department of Materials Science and Engineering,Shanghai University,Shanghai 200072 China |
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Abstract: | The influence of soaking temperature on microstructure of high temperature multi-pass compression deformation for two low
carbon steels (steel A: w
C = 0.032% and w
Mn = 0.25%; steel B: w
C = 0.165% and w
Mn = 0.38%) is studied on the thermal-mechanical simulator in order to rationalize the hot-rolling schedule of low-carbon steel
and to promote the low-temperature heating technology. The results show that the microstructures of steel A are almost not
affected by reducing soaking temperature, but the acicular ferrite forms in steel B when the soaking temperature is reduced
from 1 200 to 1 170°C, due to its smaller initial austenite grain size according to recrystallization kinetics theory. |
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Keywords: | |
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