定向凝固技术在高铬铸铁中的应用  

Application of Directional Solidification Technology to High Chromium Cast Iron

作　　者：平兆福 郑宝超 涂小慧 李卫[1,2] PING Zhao-fu;ZHENG Bao-chao;TU Xiao-hui;LI Wei(Institute of Advanced Wear&Corrosion Resistant and Functional Materials,Jinan University,Guangzhou 510632,Guangdong,China;National Joint Engineering Research Center of High Performance Metal Wear Resistant Materials Technology,Jinan University,Guangzhou 510632,Guangdong,China)

机构地区：[1]暨南大学先进耐磨蚀及功能材料研究院,广东广州510632 [2]暨南大学高性能金属耐磨材料技术国家地方联合工程研究中心,广东广州510632

出　　处：《铸造》2021年第8期899-905,共7页Foundry

基　　金：国家自然科学基金青年基金(51701084);暨南大学跃迁计划项目-青年项目(21617338);博士后基金(2019M663700)。

摘　　要：高铬铸铁中M_(7)C_(3)型碳化物使其具有出色的耐磨、耐腐蚀性能。定向凝固技术可实现碳化物的定向排列,具有特定碳化物取向的高铬铸铁其硬度、耐磨性能有别于普通高铬铸铁。本文介绍了高铬铸铁的发展及特性,描述了定向凝固技术的特点。在此基础上,总结了铸造耐磨合金硬质相定向凝固的研究进展,并对定向凝固技术在高铬铸铁中的研究方向进行了展望。M_(7)C_(3) carbide in high chrome cast iron makes it have excellent wear and corrosion resistance.Directional solidification technology can realize the directional arrangement of carbide.The hardness and wear resistance of high chromium cast iron with specific carbide orientation are different from ordinary high chromium cast iron.This paper introduces the development and characteristics of high-chromium cast iron and describes the characteristics of directional solidification technology.On this basis,the research progress of the hard phase directional solidification of cast wear-resistant alloys is summarized,and the future research direction of directional solidification technology in high chromium cast iron is given.

关 键 词：高铬铸铁 定向凝固 碳化物 耐磨性 耐腐蚀性 

分 类 号：TG244.3[金属学及工艺—铸造]