摘要
用光学显微镜、Image J图像分析软件,研究了奥氏体化温度以及保温时间对EQ70海洋平台用钢原奥氏体晶粒尺寸及其分布的影响。结果表明,随着奥氏体化温度的升高,奥氏体晶粒尺寸变大,EQ70钢的晶粒粗化温度为950℃,1000℃出现混晶现象。850℃奥氏体化时,随着奥氏体化保温时间的增加,EQ70钢的晶粒尺寸变大。但是随着保温时间的进一步增加,奥氏体晶粒尺寸增加量减少。
Effects of austenitizing temperature and holding time on prior austenitic grain size and its distribution were studied based on optical microscope observation and Image J analysis software. The results show that the prior austenite grain size increases with the increasing of austenitizing temperature, the coarsening temperature of austenitic grain is 950 ℃ and the phenomenon of mixed grain occurs at 1000℃. Austenite grain size of EQT0 steel increases with the increasing of holding time as austenitized at 850 ℃ , but with the increase of holding time over 2 h, the increasing rate of austenite grain size is reduced.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第11期42-47,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助项目(50874007
51174020)
中央高校基本科研业务费专项资金资助(FRF-SD-12-010A)
