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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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铝合金液体金属脆断过程的TEM原位观察
, PP. 1021-1027
Keywords: 7075铝合金,液体金属脆,位错发射,位错运动,TEM
Abstract:
采用自制的恒位移加载台，在透射电镜(TEM)中原位观察了7075铝合金吸附液体金属(Hg十3％Ga)后加载裂纹前方位错组态的变化以及脆性微裂纹的形核和扩展．结果表明液体金属吸附后能促进位错的发射、增殖和运动；当吸附促进位错发射和运动达到临界状态时，脆性微裂纹就在原裂纹顶端或在无位错区中形核并解理扩展.
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