稀土中碳低合金耐磨铸钢的组织及性能研究  

A STUDY ON THE MICROSTRUCTURE AND PROPERTY OF MEDIUM-CARBON AND LOW-ALLOY WEAR-RESISTANT CAST STEEL CONTAINING RE

作　　者：王建民[1] 李兴志[1] 范贵龙 周延朝 

机构地区：[1]内蒙古工业大学材料科学与工程学院,呼和浩特010062 [2]内蒙古通辽制药股份有限公司,通辽028007 [3]河南省三明交通设施工程有限公司,河南462000

出　　处：《内蒙古工业大学学报（自然科学版）》2005年第1期18-22,共5页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：教育厅重点领域项目(ZL0005)"稀土低合金耐磨材料基础研究"

摘　　要：本文研究了稀土中碳低合金耐磨铸钢,在四种不同的热处理工艺条件下,显微组织结构的变化,分析讨论了热处理工艺对稀土中碳低合金耐磨铸钢的硬度、显微组织、冲击韧性的影响.结果表明,稀土的加入并配合中断正火,获得下贝氏体占较大比例的贝氏体和马氏体的复合组织,使硬度和冲击韧性达到了最佳的配合.Four different heat treatment processes are designed for treating medium-carbon and 10w-alloy cast steel containing RE. The microstructure,hardness and impact toughness of this kind of cast steel are studied. Experimental results indicate that the interruption of normalization along with the addition of RE can help produce ideal microstructure; as the percentage of lower bainite in microstructure gets larger. Such a structure achieves an optimum coupling of hardness with impact toughness.

关 键 词：稀土 下贝氏体 中断正火 

分 类 号：TB331[一般工业技术—材料科学与工程]