The influence of cobalt on the austempering reaction in ductile cast iron
The influence of cobalt on the austempering reaction in ductile cast iron
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钴对球墨铸铁等温淬火反应的影响
DOI：
10.1080/13640461.2001.11819413
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
R. Elliott
中科院分区：
文献类型：
--
作者：
S. Yazdani;Ḥ. Bayātī;R. Elliott
报道了两种含钴和不含钴的Mn球墨铸铁和三种等温回火处理的等温回火动力学测量和力学性能测量。结果表明，Co对各等温回火处理的第I阶段反应均有促进作用，但对第II阶段反应影响不大。因此，加工窗口被加宽并移动到更早的等温回火时间。这可以用于较厚截面部件的等温回火，以获得ADI标准的更高延展性等级，并提高工艺生产率。
Austempering kinetic measurements and mechanical property measurements are reported for two Mn ductile irons with and without Co and three austempering treatments. It is shown that Co accelerates the stage I reaction in each of the irons and for each of the austempering treatments but has little affect on the stage II reaction. Consequently, the processing window is widened and moves to earlier austempering times. This can be useful in the austempering of thicker section components to obtain the higher ductility grades of the ADI standard and to increase process productivity.