CAJ | 학술논문

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。
위료제고합금주철적내마성,통과성분설계、재료배비이급용련요주등공예,제비출함C질량분수위3．0%적고범합금주철,병분석료고범합금주철적조직여내마성능。이용소묘전경( SEM)화X사선연사의( XRD)대고범합금주철적현미조직급물상진행분석,병대고범합금주철적락씨경도、충격인성화내마성진행연구。결과표명：고범합금주철적조성상주요위원위합성적VC경질과립상、(Cr,Fe)7C3상이급 Fe -Cr 상,기평균락씨경도약위 HRC64．2,평균충격인성위8．8 J/cm2,내마성시고락주철적2배좌우,구유흔호적내마성능。
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) of 3. 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;exam-ining 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)7C3 phase 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, demonstra-ting a better wear resistance.