《Table 3.Major deoxidation reactions in K4169 alloy melt》

《Table 3.Major deoxidation reactions in K4169 alloy melt》   提示：宽带有限、当前游客访问压缩模式
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《Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting》


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The addition of Y remarkably promoted the purification of O in the K4169 alloy melt during VIM.The deoxidation effect on the K4169 as-cast alloy ingots decreased from 12ppm to 3–4 ppm when Y was added to the alloy.Moreover，the deoxidation rate increased with increasing content of Y and superheating temperatures.Carbon deoxidization was found to be the main deoxidation mechanism considering that 0.05wt%C was added to the alloy in the early stage of melting（Table 1）.In the later stage of melting，Al and Y were added to the alloy，and the main deoxidation reactions are shown in Table 3.Compared with standard free energy levels of C/O and Al/O，Y/O presents the most negative standard free energy of the reaction.Upon adding a small amount of Y to the alloy，this element will preferentially react with O to generate Y2O3 before C/O and Al/O reactions.

图表编号XD002873000    严禁用于非法目的
绘制时间2018.06.01
作者Qing-ling Li、Hua-rui Zhang、Ming Gao、Jin-peng Li、Tong-xiao Tao、Hu Zhang
绘制单位School of Materials Science and Engineering, Beihang University、School of Materials Science and Engineering, Beihang University、School of Materials Science and Engineering, Beihang University、School of Materials Science and Engineering, Beihang University
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