金强
,
方鸿生
,
曹建军
,
郑燕康
,
陈秀云
金属学报
采用透射电镜技术研究高碳钢下贝氏体铁素体与母相奥氏体界面结构,发现铁素体宽面上存在可移动的生长台阶、巨型台阶以及它们的三维形态;在下贝氏体铁素体宽面上还存在结构台阶,生长台阶也可以由结构台阶演变而来,为下贝氏体的台阶生长机制提供了实验证据。
关键词:
贝氏体铁素体
,
mechanism
,
broad face
,
null
JIN Qiang FANG Hongsheng CAO Jianjun ZHENG Yankang CHEN Xiuyun Tsinghua University
,
Beijing
,
China Present adress: Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing
,
100081
,
China
金属学报(英文版)
The ferrite/austenite interfacial structure in lower bainite has been studied in a hypereutectoid steel by means of electron microscopy.It is found that the mobile growth ledges and superledges and their three-dimensional morphologies exist on the broad faces of ferrite plates.Structural ledges were also observed on the broad faces of lower bainite.Based on TEM observations,the viewpoint that the growth ledges can also evolve from structural ledges is proposed.These observations provide evidences to the ledge growth mechanism of lower bainite.
关键词:
bainitic ferrite
,
null
,
null
,
null
