Mao Li1, Xiaobao Tian1, Wentao Jiang1, Qingyuan Wang1, Haidong Fan1,*
The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.2, pp. 1-1, 2023, DOI:10.32604/icces.2023.09981
Abstract Poor ductility heavily limits the industrial application of magnesium (Mg) alloys, and pyramidal dislocations
are an important deformation mode for ductility enhancement. In this work, discrete dislocation dynamics
(DDD) simulations were performed to study the mechanical behavior and dislocation evolution of Mg singlecrystals compressed along c-axis. Especially, basal-transition and cross-slip algorithms of pyramidal
dislocations were proposed and introduced in the DDD method. Simulation results show that basaltransition is an important mechanism for the strong strain hardening observed during c-axis compression
of Mg single-crystals. Since the basal-transition events are thermally activated, increasing temperature leads
to a high strain hardening rate.… More >
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