变形工艺对CSP微合金高强度钢组织和性能的影响  

Influence of CSP deformation parameters on structure and properties of a microalloyed high strength steel

作　　者：张鑫强[1] 徐光[1] 薛正良[1] 吴光亮 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]湖南涟源钢铁(集团)公司技术中心,湖南娄底417009

出　　处：《武汉科技大学学报》2007年第6期571-573,共3页Journal of Wuhan University of Science and Technology

基　　金：湖北省教育厅重点资助项目(2002A01013)

摘　　要：在热模拟实验机上进行不同变形温度和冷却速度试验,研究低温区变形温度和冷却工艺对CSP生产线上微合金高强度钢的组织和性能的影响。试验结果表明,变形应在单相奥氏体区内完成,适当降低变形温度有利于得到细小均匀的贝氏体组织;冷却速度对贝氏体组织有明显影响,冷却速度越快,贝氏体组织越细小,强度越高。Simulation tests under different deformation temperatures and different cooling rates were conducted on thermal simulator. The influence of finish rolling temperature and cooling rate on microstructure and properties of a microalloyed steel produced by CSP line were researched. The test results show that the deformation should be finished in single austenite range and a finer bainite structure can be obtained by lowering the final deformation temperature. In addition, the cooling rate has a significant effect on bainite structure, and the faster cooling rate, the finer bainite structure and the higher strength.

关 键 词：CSP 微舍金钢 变形温度 冷却工艺 贝氏体 性能 

分 类 号：TG335.13[金属学及工艺—金属压力加工]