摘要
研究了冷却速率对2.25Cr-1Mo-0.25V低合金耐热钢种相变行为的影响。发现钢的相变点Ac1和Ac3分别为795℃和890℃,当冷却速率为0.1～200℃/s时,连续冷却相变曲线主要分为3个部分,即铁素体加珠光体转变区、贝氏体转变区及马氏体转变区;试验材料的维氏硬度随冷却速率的增加而逐渐递增。
This study focuses on the influence of cooling rate on the phase transformation behaviors of 2.25Cr-1Mo-0.25V low-alloyed heat resistant steel. It has been found that the equilibrium phase transition temperatures of A01 and At3 are 795 ℃ and 890 ℃, respectively. In addition, the continuous cooling transformation（CCT） diagrams can be divided into three parts under cooling rate of 0.1-200 ℃/s： a ferrite and pearlite region, a hainite region and a martensite region. Finally, Vickers hardness of the steel gradually rises with an increasing cooling rate.
出处
《上海电机学院学报》
2012年第2期119-122,132,共5页
Journal of Shanghai Dianji University
基金
上海市教育委员会科研创新项目资助(12YZ181)
上海市教育委员会重点学科资助(J51902)
上海高校选拔培养优秀青年教师科研专项基金项目资助(shdj003)
上海电机学院科研启动项目资助(11C419)
