YANG Min
,
SONG Chang-jiang
,
DAI Yong-xiang
,
ZHU Liang
,
LI Ke-feng
,
ZHAI Qi-jie
钢铁研究学报(英文版)
The microstructural evolution of the gas atomized Fe-25Cr-32C powders was investigated by using optical microscope, scanning electron microscope, and X-ray diffraction. The experimental results showed that the atomized Fe-25Cr-32C powders were mainly composed of austenite and (Fe,Cr)7C3 carbide. Eutectic microstructure was developed in the larger particles, whereas dendritic microstructure was obtained in the particles with diameter less than 38 μm. The reason for microstructure change should be the difference of nucleation undercooling for particles.
关键词:
