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复合纳米碳化硅包芯线球墨铸铁孕育及其效果分析

LIU Mei-duo, LI Cong,ZHU Xing-yang,WU Qiang,WU Ji-zeng,WU Yu-bin,WU Rui-zhi,CUI Lin,HOU Le-gan

Foundry（2018）

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Abstract
采用行星球磨工艺将纳米尺度的SiC粉体与微米尺度的SiC粉体进行复合制备复合纳米碳化硅铸铁用包芯线孕育剂,采用喂线法进行球墨铸铁孕育处理.采用XRD、SEM分析孕育剂的物相构成和显微形貌,采用金相、电子拉伸试验机、冲击试验机分析孕育后球墨铸铁组织及性能.试验结果表明:复合纳米SiC孕育剂的孕育效果优于纯纳米SiC和纯微米SiC孕育剂;复合纳米SiC孕育剂孕育后,球墨颗粒数增加,尺寸减小,球化率提高,力学性能显著提高.
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Key words
cored wire,inoculation,nano-SiC,ductile iron
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