Microstructure and Properties of WC Preform Column Reinforced Iron-based Composites

Zhang Fei; Wang Xingyu; Li Zulai; Shan Quan; Liao Zexin; Gou Haojie; Xiang Xinhua

doi:10.15980/j.tzzz.2022.06.003

Views : 0 下载量: 23 CSCD: 0

PDF
Export
Share
Collection
Album

Microstructure and Properties of WC Preform Column Reinforced Iron-based Composites
Vol. 42, Issue 6, Pages: 677-680(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.06.003

扫描看全文

Zhang Fei, Wang Xingyu, Li Zulai, et al. Microstructure and Properties of WC Preform Column Reinforced Iron-based Composites. [J]. Special Casting & Nonferrous Alloys 42(6):677-680(2022)
DOI：

Zhang Fei, Wang Xingyu, Li Zulai, et al. Microstructure and Properties of WC Preform Column Reinforced Iron-based Composites. [J]. Special Casting & Nonferrous Alloys 42(6):677-680(2022) DOI： 10.15980/j.tzzz.2022.06.003.

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

C和M

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。

Abstract

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

C and M

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.