Nb对V-Ti复合微合金化曲轴用非调质钢组织、性能的影响  

Effect of Nb on Microstructure and Properties of Non-quenched and Tempered Steel with V-Ti Combined Addition Used for Crankshaft

作　　者：张爱文[1] 徐震[1] 李青[1] 张建春[1] 江来珠[1] 

机构地区：[1]宝山钢铁股份有限公司技术中心,上海201900

出　　处：《钢铁》2004年第6期63-66,共4页Iron and Steel

摘　　要：研究了 Nb对一种 V- Ti复合微合金化曲轴用非调质钢组织、性能和晶粒度的影响。结果表明 :加 Nb后组织细化、韧性提高 ,强度随铌含量的上升先降后升。根据实验室研究结果制定了工业生产的合金化方案、工艺流程 ,成功生产出实际晶粒度级别为 6～ 7级的 15 0～ 15 5 m m圆钢供用户制造曲轴 ,各项指标满足用户要求。The effect of Nb on microstructure, properties, grain size of V-Ti alloy non-quenched and tempered steel used for crankshaft was researched. The microstructure is refined and the toughness increases when Nb added, but the strength decreases first and then increases as the content of Nb increases. The industrial production shows that the grain size (ASTM No.6~No.7) and properties of products with diameter of φ150 ~φ155 mm meet the demand of the customer.

关 键 词：微合金化 非调质钢 晶内铁素体 

分 类 号：TG113[金属学及工艺—物理冶金]