Research on Dynamic Mechanism of Dislocation Breeding and Networking under Shearing Stress of Magnesium Alloy

Abstract:

The dynamic evolution mechanism of dislocation under shearing stress which was the main influences of damping performance in the inner space of magnesium alloy was studied. Firstly, the inner shearing stress and its distribution of the rectangular magnesium alloy beam was calculated while the beam was bending;Secondly, the breeding and networking model of dislocation under the action of shearing stress was constructed;Finally,combined with the practical observed dislocation morphology, clarified the dynamic evolution mechanism: Under the shear stress, through F-R dislocation breeding and extension as well as twisting of dislocation with different dislocation sources under subsequent breeding, the dislocation cellular network structure is formed, which is of approximate honeycomb structure.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 145-148
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.145
• Online since: May 2014
• Authors: Xing Zi Mao*, Ming Xia, Tie Tian
• Keywords: Breeding, Dislocation, Magnesium Alloy, Mechanism, Networking, Shearing Stress

References

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