B对Cr27型高铬白口铸铁组织和性能的影响  

Effect of Boron on Microstructure and Properties of Cr27 High Chromium Cast Iron

作　　者：王康康 王荣峰[1] 吴瑞瑞[1] 杨庚[1] 

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《铸造技术》2017年第10期2344-2347,2364,共5页Foundry Technology

基　　金：山西省科技攻关项目资助(2015031011-1);山西省清洁能源与现代交通装备关键材料及基础件学科群研究生教育创新项目资助

摘　　要：通过改变加入硼元素的含量,研究Cr27型高铬白口铸铁中碳化物和基体的改变对硬度、冲击性能以及耐磨性的影响,并对材料的冲蚀磨损机理做了进一步的解释。结果表明:随着硼含量的增加,碳化物逐渐粗化,高铬白口铸铁的冲蚀性能逐渐恶化。当硼含量为0.5%时,铸铁的综合力学性能达到最佳。This study aimed at optimizing hardness, impact toughness and abrasion wear resistance of G28 chromium cast irons by changing the content of boron. The erosion wear mechanism explained by this experiment.The results show that with the increase of boron content, the carbide gradually coarsen and the erosion performance of high chromium white cast iron gradually deteriorate.When the boron addition is 0.5%, comprehensive mechanical properties of cast iron exhibits desirable.

关 键 词：硼 高铬白口铸铁 耐磨性 

分 类 号：TG252[金属学及工艺—铸造]