Fe-Ni-C合金中珠光体、贝氏体及马氏体的相变内耗

材料研究学报, 1989, 3(3): 193-198.

Fe-Ni-C合金中珠光体、贝氏体及马氏体的相变内耗

上海市200030

上海交通大学

上海冶金研究所

关键词：珠光体相变 , bainitic transformation , martensitic transformation , internal friction

THE INTERNAL FRICTION OF THE PEARLITIC BAINITIC AND MARTENSITIC TRANSFO-RMATIONS IN Fe-Ni-C ALLOYS

CHEN Weizhong XU Zuyao(Hsu T.Y.) CHEN Shuchuan (Shanghai Jaotong University)ZHANG Jihua (Shanghai Institute of Metallurgy , Academia Sinica) , null , null

Keywords： pearlitic transformation , 贝氏体相变 , 马氏体相变 , 内耗

通过研究三种Fe-Ni-C 合金中珠光体、贝氏体及马氏体的低频相变内耗,发现马氏体相变内耗遵守相界面位错的静滞后损耗机制,珠光体和贝氏体相变内耗不遵守这种机制。在频率基本不变时,随着冷却速度的增加珠光体和贝氏体的相变内耗峰增高,峰温降低,且Q(?)和(?)/fm 件·T_m 呈正比线性关系;频率增加时,珠光体和贝氏体的内耗峰明显降低,峰温上串。在连续冷却条下,Fe-Ni-C 合金中开始珠光体及贝氏体相变时并不存在点阵软化现象。

The low frequency internal friction of the pearlitic,bainiticand martensitic transformations in three Fe-Ni-C alloys has been studied.Theresults show that the internal friction of the martensitic transformation is incorrespondence with the model based on

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