CAJ | 학술논문

以钒丝和铸铁为原料,采用铸造和热处理工艺相结合的方法,使钒丝与铸铁中的碳原子反应,原位合成了V_8C_7颗粒增强铁基复合材料.对复合区进行显微组织观察及分析、显微硬度测量、耐磨性能测试.结果表明,生成的V_8C_7颗粒均匀分布于铁基体中,且生成物与基体有很好的冶金结合.复合区的最高硬度达3022 HV0.05,平均硬度是基体的10～15倍.复合材料的耐磨性相对于铸铁标准试样提高了2.89倍.
이범사화주철위원료,채용주조화열처리공예상결합적방법,사범사여주철중적탄원자반응,원위합성료V_8C_7과립증강철기복합재료.대복합구진행현미조직관찰급분석、현미경도측량、내마성능측시.결과표명,생성적V_8C_7과립균균분포우철기체중,차생성물여기체유흔호적야금결합.복합구적최고경도체3022 HV0.05,평균경도시기체적10～15배.복합재료적내마성상대우주철표준시양제고료2.89배.
V_8C_7 particles reinforced iron matrix composite was produced by in-situ synthesized process through casting plus heat treatment employing vanadium wires and grey cast iron. The microstructure, microhardness and wear resistance of compound region were observed and measured. The results show that, V_8C_7 particulates distribute uniformly in iron matrix, there is good metallurgy-bond between the particles and matrix, the highest microhardness of compound region is 3022 HV0.05, and the average microhardness is 10～15 times as high as iron matrix. The wear resistance of the composite is 2.89 times higher than the cast iron standard sample.