Abstract
The effect of Li addition on the slip behavior of Mg has been investigated using a molecular dynamics simulation. Based on a previous study on Mg–Y alloys concluding that a reduction of the anisotropy in critical resolved shear stress (CRSS) among difference slip systems activates the \( \left\langle {\text{c}} + {\text{a}} \right\rangle \) slip, the effect of Li, an element known to improve the room temperature ductility of Mg is chosen as an alloying element to examine the robustness of the above-mentioned conclusion. It is found that Li increases the CRSS of the basal slip more than that of the non-basal slip, reducing the difference in the CRSS among different slip systems. The reduced anisotropy in CRSS is believed to activate the non-basal \( \left\langle {\text{c}} + {\text{a}} \right\rangle \) slip and eventually improve ductility in Mg–Li alloys. This understanding can be further extended into an alloy design of more cost-effective Mg alloys with improved room temperature formability.
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© 2017 The Minerals, Metals & Materials Society
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Jang, HS., Kim, KH., Kim, N.J., Lee, BJ. (2017). Understanding on the Role of Rare Earth Elements in Activation of \( \left\langle {\text{c}} + {\text{a}} \right\rangle \) Slip in Magnesium: An Atomistic Approach. In: Solanki, K., Orlov, D., Singh, A., Neelameggham, N. (eds) Magnesium Technology 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-52392-7_67
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DOI: https://doi.org/10.1007/978-3-319-52392-7_67
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