Continuous Cooling Transformation Temperatures and Microstructures of Niobium Bearing Microalloyed Steels
Effects of niobium content and cooling rate on ferrite and bainite start temperatures (Ar3, Bs) and the microstructural features have been studied in niobium bearing ultralow carbon microalloyed steels. The Ar3 and Bs temperatures decrease as the niobium content or cooling rate is increased. The dependence of Ar3 on cooling rate is greater than that of Bs in all niobium contents.The bainitic ferrite laths become longer and narrower as the niobium content or cooling rate is increased, and the niobium also shows a tendency to decrease the polygonal ferrite grain size.
铌含量 微合金钢 冷却速度 铁素体 贝氏体
Young-Kook LEE Jin-Myung HONG Chong-Sool CHOI
Department of Metallurgical Engineering, Yonsei University, Seoul, Korea Research Institute of Iron and Steel Technology,Yonsei University,Seoul,Korea
国内会议
上海
英文
158-160
2004-05-27（万方平台首次上网日期，不代表论文的发表时间）