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首页> 外文期刊>International Journal of Minerals,Metallurgy and Materials >In situ observations of austenite grain growth in Fe-C-Mn-Si super bainitic steel
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In situ observations of austenite grain growth in Fe-C-Mn-Si super bainitic steel

机译：Fe-C-Mn-Si超贝氏体钢中奥氏体晶粒长大的原位观察

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摘要

In situ observations of austenite grain growth in Fe-C-Mn-Si super bainitic steel were conducted on a high-temperature laser scanning confocal microscope during continuous heating and subsequent isothermal holding at 850, 1000, and 1100°C for 30 min. A grain growth model was proposed based on experimental results. It is indicated that the austenite grain size increases with austenitizing temperature and holding time. When the austenitizing temperature is above 1100°C, the austenite grains grow rapidly, and abnormal austenite grains occur. In addition, the effect of heating rate on austenite grain growth was investigated, and the relation between austenite grains and bainite morphology after bainitic transformations was also discussed.
机译：在连续加热以及随后在850、1000和1100°C等温保持30分钟的过程中，在高温激光扫描共聚焦显微镜上进行Fe-C-Mn-Si超贝氏体钢中奥氏体晶粒长大的原位观察。根据实验结果提出了晶粒长大模型。结果表明，奥氏体晶粒尺寸随奥氏体化温度和保温时间的增加而增大。当奥氏体化温度高于1100℃时，奥氏体晶粒快速生长，并且发生异常的奥氏体晶粒。另外，研究了升温速率对奥氏体晶粒长大的影响，探讨了贝氏体转变后奥氏体晶粒与贝氏体形态的关系。

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