控轧控冷对含Nb-Ti微合金汽车用钢组织的影响  

Effect of Thermomechanical Control Process on Structure of Nb-Ti Microalloy Steel for Automobile

作　　者：赵刚[1] 鲍思前[1] 叶传龙[1] 余驰斌[1] 苏毅[2] 宋平[2] 曾萍[2] 温盾[2] 

机构地区：[1]武汉科技大学,武汉430081 [2]武汉钢铁(集团)公司,武汉430080

出　　处：《特殊钢》2003年第3期21-23,共3页Special Steel

摘　　要：采用热模拟实验技术研究控轧控冷工艺对 0 .0 9C、1.13Mn、0 .0 3Nb、0 .0 2Ti微合金汽车用钢组织的影响。结果表明 ,在再结晶区和未再结晶区的累计变形可以得到更细的组织 ,95 0℃以下终轧并快速冷却有利于形成针状铁素体组织。变形诱发Nb的碳 氮化物析出 。The effect of thermomechanical control process on structure of a 0.09C 1.13Mn 0.03Nb 0.02Ti microalloy steel for automobile has been studied by a Thermecmastor Z hot simulator. The results showed that the fine grain could be got by multiple pass reduction in recrystallization and unrecrystallization zone, and it is available to form acicular ferrite structure with the finishing temperature no more than 950 ℃ and accelerated cooling. The Nb(C,N) precipitation induced by deformation of austenite contributed to the fineness of austenite grain and phase transformed structure.

关 键 词：汽车用钢 微合金钢 组织 控轧控冷 针状铁素体 组织细化 

分 类 号：TG142[一般工业技术—材料科学与工程]