摘要
指出康沫狂教授文中的一些疑点,主要为:缺乏产生贫/富溶质区的所谓“类spinodal分解”所应具有的理论基础;没有缺陷浓度的计算,以论证偏聚量和缺陷偏聚的实验证据;以及预贝氏体相变尚属疑问。近来高分辨透射电镜实验已证明:贝氏体以相界面台阶扩散长大。作者强调贝氏体相变以扩散机制形核和长大。
The questionable aspects in the Prof. Kang's discussion on nucleation and ledge growth of bainite formation are pointed out mainly as: lake of theoretical foundation to build up so called spinodal-like decomposition for formation of solute depleted/enriched zones. No calculation of defects concentration to verify the segregation quantity and no experimental evidence of solute segregation at defects. It is also questionable if there exists prebainitic transformation. Recent high resolution TEM experiments have shown that bainite grows through the diffusional motion of ledges at interfaces. The present authors emphasize that the mechanism of nucleation and growth in bainitic transformation is appropriate for diffusion.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2005年第6期1-4,共4页
Transactions of Materials and Heat Treatment
关键词
贝氏体相变
形核
长大
台阶长大
扩散形核
Bainitic transformations
Crystal defects
Diffusion
Growth (materials)
Nucleation
