Dislocation Character and Evolution Mechanism of Particles Reinforced Aluminum Matrix Composites Impacted by Pulsed Electromagnetic Field

Xue Ting Yuan; Guirong Li; Hong Ming Wang; Yun Cai; Yu Tao Zhao; Xun Yin Zhang

doi:10.4028/www.scientific.net/KEM.575-576.406

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 575-576Dislocation Character and Evolution Mechanism of...

Dislocation Character and Evolution Mechanism of Particles Reinforced Aluminum Matrix Composites Impacted by Pulsed Electromagnetic Field

Abstract:

Under the condition of different magnetic induced intensity as1.5T, 2.0T and2.5T, AlTiZr particles reinforced 7055 aluminum matrix composites were subject to the magnetic impact processing. The structural evolution was observed by transmission electron microscope. The result shows that, magnetic impact processing can induce dislocation with different morphologies and increase the dislocation density. The enhancement of dislocation density and elastic interaction between them can cause the resistance of dislocation movement and improve the strength of material. The magnetic pressure may exceed the yield strength of special orientation crystal. The increased temperature induced by heat effect will lower the yield point further. It is useful to dislocation nucleation and movement.

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Periodical:

Key Engineering Materials (Volumes 575-576)

Pages:

406-409

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.575-576.406

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Online since:

September 2013

Authors:

Xue Ting Yuan, Guirong Li, Hong Ming Wang, Yun Cai, Yu Tao Zhao, Xun Yin Zhang

Keywords:

Aluminum Matrix Composite (AMC), Dislocation, Pulsed Electromagnet Field

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