摘要
为改善合金材料的耐磨性能,采用氩弧熔铸技术,以Fe、Ti、B和C粉为原料,按质量分数比45∶30∶20∶5制备原位合成TiC-TiB2/Fe复合材料。通过扫描电镜、X射线衍射仪、洛氏硬度计及摩擦磨损试验机对复合材料的显微组织、物相、洛氏硬度和耐磨性进行分析研究。结果表明:复合材料由原位生成的TiB2和TiC增强颗粒相及α-Fe相组成,颗粒呈块状、板条状和多边形,且颗粒结合地很紧密。复合材料的平均洛氏硬度约为9.37 GPa。在室温干滑动磨损条件下,该熔铸复合材料的耐磨性约是GCr15工具钢的6倍。该研究为原位合成TiC-TiB2/Fe复合材料的制备提供了一种新方法。
This paper is aimed specifically at improving the wear resistance of alloy materials by preparing in-situ synthesized TiC-TiB2/Fe composites material from Ti powder, B powder, C powder and Fe powder using argon arc smelting technology, according to the mass fraction of 45： 30： 20： 5. The viability of the composite material is validated by analyzing the microstructure, the phase composition, the Rockwell hardness, and the wear resistance of the composite material using the scanning electron microscope, the X-ray diffraction, the Rockwell hardness tester and the friction and wear testing machine. The results suggest that the argon arc smelting composite materials composed of in-situ synthesized TiB2 and TiC reinforced particle phase and α-Fe phase have the particles shaped like lump, lath and polygon and combined very closely ; it has the average Rockwell hardness of about 9.37 GPa and when exposed to room temperature dry sliding wear, it boasts 5 times higher wear resistance than GCrl5 tool steel. The study may pro vide a new method of the preparation of the in-situ synthesis of TiC-TiB2/Fe composite material.
出处
《黑龙江科技学院学报》
CAS
2014年第4期393-396,共4页
Journal of Heilongjiang Institute of Science and Technology
基金
黑龙江省教育厅科学技术研究项目(12541705)
