高钒合金铸铁的组织与耐磨性能  

Investigation on microstructure and wear resistance of high vanadium alloy cast iron

作　　者：王振廷[1] 高红明[1] 葛升平[1] 于书经 赵春香[2] 

机构地区：[1]黑龙江科技大学材料科学与工程学院,哈尔滨150022 [2]黑龙江科技大学理学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2015年第3期233-236,共4页Journal of Heilongjiang University of Science And Technology

基　　金：黑龙江省应用技术研究与开发计划项目(GC13A113)

摘　　要：为了提高合金铸铁的耐磨性,通过成分设计、材料配比以及熔炼浇注等工艺,制备出含C质量分数为3.0%的高钒合金铸铁,并分析了高钒合金铸铁的组织与耐磨性能。利用扫描电镜(SEM)和X射线衍射仪(XRD)对高钒合金铸铁的显微组织及物相进行分析,并对高钒合金铸铁的洛氏硬度、冲击韧性和耐磨性进行研究。结果表明:高钒合金铸铁的组成相主要为原位合成的VC硬质颗粒相、(Cr,Fe)7C3相以及Fe-Cr相,其平均洛氏硬度约为HRC64.2,平均冲击韧性为8.8 J/cm2,耐磨性是高铬铸铁的2倍左右,具有很好的耐磨性能。This paper discusses a novel study directed at improving the wear resistance of alloyed cast iron. The study consists of preparing the high vanadium alloy cast iron containing C（ mass fraction） of3. 0%,using techniques such as the composition design,the composition proportion and the melting and pouring,and analyzing the microstructure and wear resistance of the high vanadium alloy cast iron; examining the microstructures and phases of the high vanadium alloy cast iron by scanning electron microscopy（ SEM） and X-ray diffract meter（ XRD）; and identifying the Rockwell hardness,impact toughness and wear resistance of the high vanadium alloy cast iron. The study finds that the high vanadium alloy cast iron has composition phases consisting mainly of in-situ synthesized VC hard particle phase,（ Cr,Fe）7C3phase and Fe-Cr phase and has the average rockwell hardness of about HRC64. 2,the average impact toughness of 8. 8 J / cm2,and the wear resistance about 2 times higher than the high chromium cast iron,demonstrating a better wear resistance.

关 键 词：高钒合金铸铁 原位合成VC 组织与耐磨性能 

分 类 号：TG174[金属学及工艺—金属表面处理]