Effects of Holding Temperature on Bainite Transformation in Cr-Mo Steel

Journal of Mechanical Engineering and Sciences

M. Sarizam¹  Y. Komizo² 

[1] Faculty of Earth Science, University Malaysia Kelantan Jeli Campus, Locked Bag No.100, 17600 Jeli, Kelantan, Malaysia ;Joining and Welding Research Institute, Osaka University 11-1 Mihogaoka, Ibaraki City, Osaka, Japan, 567-0047;

关键词: Variant analysis;    bainite;    phase transformation;    heat affected zone (HAZ);    EBSD;   

DOI  :  10.15282/jmes.7.2014.9.0107

来源: DOAJ

【 摘 要 】

The effect of holding temperature on the variant selection mechanism during bainite transformation was investigated in 2Cr-1Mo steel. The transformation behaviour was studied by using high temperature laser scanning confocal microscopy (LSCM) via in situ observation. The specimen was heat treated to 1350 °C and was held for 60 s before being cooled to 560 °C and 580°C. In both conditions, each specimen was isothermally transformed for 1 hour and cooled to room temperature. The heat-treated specimen was then analysed using the electron backscattered diffraction (EBSD) method. As a result, variant preferential selection is more prominent at a higher holding temperature, which coarsened the block and packet boundary and is connected with a low misorientation angle variant.

【 授权许可】

Unknown