EFFECT OF HEATING TEMPERATURE ON THE GROWTH BEHAVIOR OF AUSTENITE GRAIN OF TITANIUM MICRO-ALLOYED STEEL
The behavior of austenite grain growth and the solution of Ti were researched by heated in an electric furnace at the temperature of 850℃ to 1250℃ for 30 min.The precipitates of Ti during the heating process were examined by transmission electron microscopy(TEM).The results indicate that the tested steel has two grain coarsening temperatures of austenite grains with the increase of heating temperature,1050℃ and 1250℃ respectively,which corresponds to the solution temperature of two precipitates of Ti,but lower than the value of the solution temperature.It is found that the activation energy of grain growth reduced from 26,561 J/mol to 239.8 KJ/mol with the dissolving of TiC precipitates by analyzing two stages of austenite grain growth process.
heating temperature austenite grain growth precipitation Ti micro-alloyed steel
Xu LUO Yong-lin KANG Cai-shui YANG Jun-hong LI
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100 School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100 Panzhihua Iron & Steel Research Institute,Panzhihua 617000,Sichuan,China
国内会议
杭州
英文
297-306
2015-11-11（万方平台首次上网日期，不代表论文的发表时间）