Exploring the transfer of plasticity across Laves phase interfaces in a dual phase magnesium alloy

• DOI: 10.1016/j.matdes.2021.109572
• Publication Date: 2021-02-09T21:03:01Z
• Authors: Julien Guénolé; Muhammad Zubair; Swagata Roy; Zhuocheng Xie; Marta Lipińska-Ch...; Stefanie Sandlöbe...; Sandra Korte-Kerzel
• Keywords: Laves phase; Brittleness

The mechanical behaviour of Mg-Al alloys can be largely improved by the formation an intermetallic Laves phase skeleton, in particular creep strength. Recent nanomechanical studies revealed plasticity dislocation glide (Mg,Al)$_2$Ca phase, even at room temperature. As strengthening this remains, however, brittle low In work, we present experimental evidence slip transfer from Mg matrix to skeleton temperature and explore associated mechanisms means atomistic simulations. We identify two possible for transferring basal into phases depending on crystallographic orientation: a direct indirect triggered full partial dislocations, respectively. Our numerical observations also highlight importance interfacial sliding that prevent one other.