摘要
利用定量逐层研磨和计算机辅助重构和可视化技术研究了在Fe - 0 2 8C - 3 0Mo(mass % )合金中TTT曲线港湾 (Bay)鼻尖温度以下形成的退化铁素体的三维形态。退化铁素体的三维观察和分析表明 ,退化铁素体起初是在奥氏体晶界上形成 ,然后长向晶内 ,而不是向晶界扩展。退化铁素体是由棒状的亚单元组成 ,每个亚单元的直径约为 1- 2微米 ,长度为几微米。
The three-dimensional morphology of degenerate ferrite formed below the bay of the TTT diagram in an Fe-0 28 C-3 0 Mo (mass%) alloy have been revealed utilizing serial sectioning in conjunction with computer reconstruction and visualization. The degenerate ferrite is initially formed at prior austenite boundary and then grows toward grain interior rather than along the grain boundary. The degenerate ferrite consists of rod-like subunits, each several micron in length and 1-2 micron in diameter. The degenerate morphology of ferrite may be attributed to repeated nucleation, growth and coalescence of adjacent ferrite crystals.
出处
《中国体视学与图像分析》
2004年第3期134-139,共6页
Chinese Journal of Stereology and Image Analysis
基金
2 0 0 4年湖北省教育厅科学研究基金资助(No.2 0 0 4Q0 0 1)
关键词
钢
相变
组织
贝氏体
铁素体
三维形态
Steels, phase transformation, microstructure, bainite, ferrite and three-dimensional morphology
