OALib Journal期刊
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连续截面和计算机辅助重建法观察Fe-0.28C-3.0Mo合金钢退化铁素体的三维形貌
, PP. 1237-1242
Keywords: Fe-0.28C-3.0Mo合金钢,相变,贝氏体
Abstract:
利用定量逐层研磨和计算机辅助重建及可视化技术,研究了Fe--0.28C--3.0Mo(质量分数,%)合金钢中TTT曲线港湾形鼻尖温度以下形成的退化铁素体的三维形态.三维观察和分析表明,退化铁素体最初在奥氏体晶界形成,然后不是向晶界扩展,而是长向晶内.退化铁素体由棒状亚单元组成,每个亚单元的直径为1---2μm,长度为几微米.该合金钢中退化铁素体的奇特形貌可能是由铁素体晶粒的重复形核、长大以及相临铁素体晶粒的合并而形成的.
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