摘要
采用砂型铸造工艺制备具有预制体结构的WC颗粒增强铁基复合材料,研究不同预制体直径对WC增强铁基复合材料的显微组织和三体磨料磨损性能的影响。结果表明,预制体直径为5mm和10mm时,预制体与基体间均产生了明显的过渡层。复合材料的显微组织主要有含WC、Fe_(3)W_(3)C和M_(7)C_(3)型碳化物,且过渡层和预制体区域比高铬铸铁基体具有更高的硬度,预制体直径为10mm的复合材料具有最小的磨损失重,耐磨性最佳,磨损形貌主要表现为犁沟和剥落等特征。
The WC particle reinforced iron-based composites with prefabricated structure were prepared by sand casting process.The influence of different prefabricated column diameters on the microstructure and three-body abrasive wear properties of WC reinforced iron-based composites was investigated.The results indicate that when the preform diameter is 5mm and 10mm,an obvious transition layer is formed between the preform and the iron-based matrix.The microstructure of the composite is mainly composed of WC,Fe_(3)W_(3)C and M_(7)C_(3) carbides,and the hardness of the transition layer and preform zone is higher than that of the high chromium cast iron matrix.The composites with prefabricated column diameter of 10mm exhibit the lowest wear rate and the optimal wear resistance,where the wear morphologies are characterized by furrows and spalling.
作者
张飞
王兴宇
李祖来
山泉
廖泽鑫
苟浩杰
向信华
Zhang Fei;Wang Xingyu;Li Zulai;Shan Quan;Liao Zexin;Gou Haojie;Xiang Xinhua(School of Mechanical and Electrical Engineering,Kunming University of Science and Technology;School of Materials Science and Engineering,Kunming University of Science and Technology;National and Local Joint Engineering Laboratory for Advanced Metal Solidification and Equipment Technology,Kunming University of Science and Technology)
出处
《特种铸造及有色合金》
CAS
北大核心
2022年第6期677-680,共4页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目(52071166,51871116)
云南省高唯院士工作站资助项目(202005AF150006)
关键词
WC颗粒
铁基复合材料
预制体直径
耐磨性
WC Particles
Iron-based Composite
Preform Column Diameter
Wear Resistance
