摘要
在Gleeble2000热模拟试验机上模拟曲轴实际锻造过程,采用双因子线性回归方法和单因子二次多项式回归方法,分析加热温度和冷却速度对铁素体晶粒数目、铁素体晶粒平均直径和铁素体百分含量的影响,结果显示,加热温度和冷却速度是锻件组织变化的主要影响因素。在特定加热温度和冷却速度条件下,硫化物成分变化和钒、钛的碳、氮化物析出相大小成为组织变化的主要影响因素。试验结果在工业化生产中得到验证。
The forging process of crankshaft was simulated on Gleeble 2000 thermal simulation tester.Using double-factor linear regression and single-factor second-degree polynomial regression,the effect of heating temperature and cooling speed on the number of ferrite grain,average diameter of ferrite grain and volume percentage of ferrite was analyzed.The results show that the heating temperature and cooling speed are the main influencing factors of forging microstructure.When heating temperature and cooling speed are given,the sulfide composition change,the precipitate of carbide or nitride of V and Ti are the main influencing factors.Consequently,the effect on mechanical properties of crankshaft was discussed.
出处
《锻压技术》
CAS
CSCD
北大核心
2010年第4期16-21,共6页
Forging & Stamping Technology
基金
国家科技支撑计划资助项目(2007BAE51B03)
关键词
非调质钢
热模拟
铁素体晶粒
力学性能
non-quenched and tempered steel
thermal simulation
ferrite grain
mechanical property
