| 2214铝合金超塑性变形机制 |
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| 引用本文： | 刘润广,蒋浩民,姜勇,彭福林,尹福林,张宏征.2214铝合金超塑性变形机制[J].金属学报,1996,32(12):1244-1247. |
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| 作者姓名： | 刘润广 蒋浩民 姜勇 彭福林 尹福林 张宏征 |
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| 作者单位： | [1]哈尔滨工业大学 [2]哈尔滨飞机制造公司 |
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| 摘 要： | 温轧态２２１４铝合金在超塑性变形过程中，由于动态回复和动态再结晶的作用，使晶内位错密度在一定程度上保持平衡。超塑性变形的主要机制为晶界滑动；晶内位错滑移和扩散蠕变作为重要的协调机制，促进了晶界滑动的顺利进行。该合金的超塑性变形机制符合位错协调晶界滑动模型。
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| 关 键 词： | 铝合金 超塑性 变形 |
MECHANISM OF SUPERPLASTIC DEFORMATION IN ALUMINIUM ALLOY 2214 |
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| LIU Runguang,JIANG Haomin,JIANG Yong,PENG Fulin,YIN Fulin,ZHANG Hongzheng.MECHANISM OF SUPERPLASTIC DEFORMATION IN ALUMINIUM ALLOY 2214[J].Acta Metallurgica Sinica,1996,32(12):1244-1247. |
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| Authors: | LIU Runguang JIANG Haomin JIANG Yong PENG Fulin YIN Fulin ZHANG Hongzheng |
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| Abstract: | During the superplastic deformation of warm-rolled aluminium alloy 2214,the dislocation density in the grain remains equilibration to some extent because of the effect of dynamic recovery and recrystallization. The dominant deformation mechanism is grain-boundary sliding.The dislocation sliding in grain and diffusion creep, as two kinds of important coordination mechanism,promote the development of grain-boundary sliding.The superplastic deformation mechanism accords with the model of dislocation coordinating grain-boundary sliding. |
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| Keywords: | aluminium alloy superplasticity grain-boundary sliding |
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