Effects of austenite deformation on CCT curves and microstructures of advanced atmospheric corrosion resistant steel

摘要：

　　The CCT curves of advanced atmospheric corrosion resistant steel were measured using Thermecmastor-z thermal simulator and the effects of austenite deformation on the curves and microstructures under continuous cooling conditions was analyzed.The results showed that the Bs elevated while Bf lowered,and the critical cooling rate preventing ferrite transformation was increased,so the ferrite and bainite transformation were enhanced while martensite transformation was delayed.The microstructures were observed through the optical microscope and the hardness was tested.It was found that the volume fraction of ferrite was increased after austenite deformation when cooling rate below 0.5℃/s;while the matrix microstructure of non-deformation samples were bainite even the cooling rate is 0.1℃/s.The hardness was increased as the cooling rates increases due to the phase transformation strengthening The ferrite-bainite microstructure can be obtained within a large scope of cooling rates.

关键词： atmospheric corrosion resistant steel CCT curve microstructure austenite deformation

作者: SONG Fengming DU Linxiu WEN Donghui

作者单位: State Key Lab of Rolling Technology & Automation,Northeastern University,Shenyang 110004,Liaoning,Ch State Key Lab of Rolling Technology & Automation,Northeastern University,Shenyang 110004,Liaoning,Ch Research Institute,Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China

会议类型: 国内会议

会议名称: 第五届宝钢学术年会

会议地点: 上海

会议语种:英文

页码: 1-6

在线出版日期: 2013-06-01（万方平台首次上网日期，不代表论文的发表时间）