摘要
利用热力学计算软件Thermo-Calc和Gleeble物理模拟技术辅助进行抗剥离车轮钢的合金设计。热力学计算结果显示,从成分设计的角度出发,提高Si含量和降低C含量会提高车轮钢的相变点,可有效抑制车轮钢的制动剥离现象。动态升温模拟试验也说明,提高Si含量可改善车轮钢的抗剥离性能。但是,降低C含量也带来车轮钢耐磨性的降低,而提高Si含量则在基本不损害塑性的情况下,显著提高车轮钢的强度。
Utilizing Thermo-Calc,a thermodynamic
computational software,and Gleeble simulation tester,chemistry design of
spalling-resistant wheel steels was investigated.The computational results
showed that increasing Si content as well as decreasing C content is effective
to reduce tread spalling since they both elevate transformation temperature of
wheel steels.And Gleeble simulation test provides the evidence of improved
spalling resistance by Si addition in kinetics.However,as one of the two
methods to improve spalling resistance,decreasing C brings about wear-
resistance reduction of wheel steel while Si addition increases the strength of
wheel steels remarkably with slightly reduced ductility.
出处
《钢铁》
CAS
CSCD
北大核心
2009年第8期67-71,共5页
Iron and Steel
基金
国家863计划资助项目(2006AA03Z514
2007AA030703)
关键词
车轮钢
合金设计
热力学
剥离
相变
wheel steels
chemistry design
thermodynamics
spalling
transformation
