燕山大学学报2011，Vol.35Issue(5)：427-430,470,5.DOI:10.3969/j.issn.1007-791X.2011.05.010
高碳低合金钢低温贝氏体组织及其耐磨性研究
Study on bainitic microstructure under low austempering temperature and its wear resistance of high-carbon low-alloy steel
摘要
Abstract
A new high-carbon low-alloy steel is designed to obtain the carbide-free bainite under low-temperature austempering. The microstructure, wear resistance under dry sliding friction and the wear mechanism are comparatively studied between samples austempered and low-temperature tempered. Results show that the carbide-free bainitic microstructure composed of bainitic ferrite laths with mean thickness of 120 nm and retained austenite films can be achieved by austempering at 220 °C for 120 h in salt bath after austenitizing at 1 000 °C. The wear resistance under dry sliding friction of austempered sample is 19% more than that of low-temperature tempered sample. The wear mechanism of the low-temperature austempered sample is determined to follow the adhesive wear mode.关键词
高碳低合金钢/等温淬火/无碳化物贝氏体/耐磨性Key words
low-alloy high-carbon steel/ austempering/ carbide-free bainite/ wear resistance分类
矿业与冶金引用本文复制引用
杨静,王天生,张冰..高碳低合金钢低温贝氏体组织及其耐磨性研究[J].燕山大学学报,2011,35(5):427-430,470,5.基金项目
国家自然科学基金资助项目(51071137) （51071137）
河北省自然科学基金-钢铁联合基金资助项目(E2011203136) （E2011203136）
