摘要
用高分辨电子显微镜观察分析贝氏体钢贝氏体铁素体精细结构及其尺寸的结果表明 ,上贝氏体铁素体亚片条间存在孪晶取向关系 ;下贝氏体铁素体内有孪晶 ;贝氏体铁素体条束由细小的亚片条组成 ,这些亚片条多数是精细孪晶细小片条。高分辨电镜 (HREM)准确地确定细小孪晶片条宽度在 2～ 30nm范围内。
The fine structure and its size of bainite ferrite in bainitic steel were observed and analyzed with high resolution electron microscope. There is orientation relationship of the twins between bainitic subplates. There are the twins in lower bainitic ferrite, the bainitic ferritic laths are composed of fine subplates which mostly are namely fine twin subplates. HREM images exactly determined that the widths of the most smallest fine twin subplates are only 2～3nm. In this paper the formation process of the bainitic ferrite subplates was discussed.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2002年第3期20-23,共4页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助 ( 599710 2 7)
关键词
贝氏体铁素体
亚片条
精细孪晶
纳米结构
高分辨像
bainitic ferrite
subplate
fine structure twin
nanoscale structure
HREM image
