复合纳米碳化硅包芯线球墨铸铁孕育及其效果分析  

Inoculation Effect of Composite Nano-SiC Cored Wire on Ductile Iron

作　　者：刘美多[1] 李聪 朱兴洋 吴强 吴纪增 吴玉彬 巫瑞智[2] 崔琳[5] 侯乐干[2] LIU Mei-duo1, LI Cong2, ZHU Xing-yang2, WU Qiang3, WU Ji-zeng4, WU Yu-bin4, WU Rui-zhi2, CUI Lin5, HOU Le-gan2(1. Department of Environmental Engineering, Heilongjiang University of Technology, Jixi 158100, Heilongiiang, China; 2. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, Heilongiiang, China; 3. Harbin Zhubo Robot Co., Ltd., Harbin 150078, Heilongjiang, China; 4. Harbin Kedewei Metallurgy Co., Ltd., Harbin 150078, Heilongjiang, China; 5. College of Civil and Architectural Engineering, Heilongjiang Institute of Technology, Harbin 150050, Heilongjiang, China)

机构地区：[1]黑龙江工业学院环境工程系,黑龙江鸡西158100 [2]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [3]哈尔滨铸博机器人有限公司,黑龙江哈尔滨150078 [4]哈尔滨科德威冶金股份有限公司,黑龙江哈尔滨150078 [5]黑龙江工程学院土木与建筑工程学院,黑龙江哈尔滨150050

出　　处：《铸造》2018年第2期167-170,共4页Foundry

基　　金：哈尔滨市科技攻关项目(2016AB2AG013)

摘　　要：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。Planetary mill was used to prepare the composite powder with nano-SiC and micro-SiC. The composite powder was used to fabricate cored wire for inoculation of ductile iron. The phase composition and microstructure of the inoculant were analyzed by XRD and SEM. The microstructure and mechanical properties of ductile iron were analyzed by metallographic, electronic tensile testing machine and impact testing machine. The experimental results show that the inoculation effect of the composite nano-SiC inoculant is superior to that of pure nano-SiC and pure micro-SiC inoculant~ With the composite nano-SiC inoculant, the number of graphite nodules increases, the size of them decreases, and the spheroidization rate increases, which cause the obvious improvement of mechanical properties.

关 键 词：纳米碳化硅 包芯线 孕育 球墨铸铁 

分 类 号：TG143.5[一般工业技术—材料科学与工程]