20CrMnTi钢钛、氮含量的计算机优化设计及其应用  

Computer Optimal Design of Titanium and Nitrogen Content in 20CrMnTi Steel and Its Application

作　　者：雍兮[1,2,3] 曹存根[1] 张利平 亓海全[3] 雍岐龙[3] 

机构地区：[1]中国科学院计算技术研究所智能信息处理重点实验室,北京100190 [2]中国科学院研究生院,北京100049 [3]钢铁研究总院,北京100081 [4]莱芜钢铁集团公司技术中心,莱芜271104

出　　处：《机械工程材料》2010年第12期80-83,共4页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(50441032)

摘　　要：使用自主研发的智能化软件对20CrMnTi渗碳钢中的钛含量及氮含量进行了优化设计,并通过光学显微镜、扫描电镜及其附带的能谱仪测定了成分优化后钢中奥氏体晶粒及第二相颗粒的尺寸及分布,通过接触疲劳试验测定了该钢的表面接触疲劳寿命。结果表明:采用该软件进行成分优化设计后钢在渗碳过程中奥氏体晶粒不会明显长大,同时又基本消除了液析氮化钛,从而使其接触疲劳寿命明显提高。Using the independently developed intelligent software the content of Ti and N in the 20CrMnTi carbonization steel was optimally designed.The size and distribution of the austenite grains and second phase particles after composition optimization were measured by optical microscope,SEM and its accessary EDS.The surface contact fatigue life of the steel was measured through contact fatigue experiment.The results show that the austenite grains in the steel after composition optimization designed using the software would not grow obviously during the carburizing process,at the same time the liquid-extraction of TiN was basically eliminated,and thus the contact fatigue life of the steel was improved significantly.

关 键 词：渗碳钢 钛含量 优化设计 智能计算技术 

分 类 号：TG142.10[一般工业技术—材料科学与工程] TG142.4[金属学及工艺—金属材料]