| MB26合金超塑变形过程中显微组织变化及超塑变形机制 |
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| 引用本文： | 马洪涛 杨蕴林. MB26合金超塑变形过程中显微组织变化及超塑变形机制[J]. 兵器材料科学与工程, 1998, 21(6): 6-11 |
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| 作者姓名： | 马洪涛 杨蕴林 |
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| 作者单位： | [1]清华大学 [2]洛阳工学院 |
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| 摘 要： | 通过对热挤压态ＭＢ２６镁合金超塑性变形过程中显微组织的观察与分析，证实该合金的超塑变形机制是由位错运动和扩散蠕变所协调的以晶界滑移为主的变形机制，在变形初期的动态再结晶对获得微细等轴晶粒起到重要作用。
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| 关 键 词： | MB26合金 超塑变形 显微组织 变形机制 |
MICROSTRUCTURE CHANGES AND DEFORMATION MECHANISM DURING SUPERPLASTIC DEFORMATION IN MB26 ALLOY |
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| Ma Hongtao,Yang Yunlin,Zhang Baiqing,Xi Jukui,Zhang Ruisheng Dept of Material Science and Engineering,TsingHua University,Beijing. MICROSTRUCTURE CHANGES AND DEFORMATION MECHANISM DURING SUPERPLASTIC DEFORMATION IN MB26 ALLOY[J]. Ordnance Material Science and Engineering, 1998, 21(6): 6-11 |
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| Authors: | Ma Hongtao Yang Yunlin Zhang Baiqing Xi Jukui Zhang Ruisheng Dept of Material Science Engineering TsingHua University Beijing |
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| Affiliation: | Ma Hongtao,Yang Yunlin,Zhang Baiqing,Xi Jukui,Zhang Ruisheng Dept of Material Science and Engineering,TsingHua University,Beijing 100084 |
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| Abstract: | The changes of microstructures in roded MB26 alloy during the superplastic deformation are studied in this paper. It is shown that the grain bounderies sliding is the main deformation mechanism, the dislocation slip and diffutional creep are the main coordinating mechanism, The dynamic recrystallization accompanying the initial stage of deformation plays an important role in the superplasticity. |
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| Keywords: | MB26 alloy microstructure superplastic deformation mechanism. |
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