Enhanced mechanical properties in fine-grained Mg–1.0Zn–0.5Ca alloys prepared by extrusion at different temperatures

Processing and microstructure–property relations of high-strength low-alloy (HSLA) Mg–Zn–Ca alloys

“…In contrast to tensile loading, 'texture weakening' comes into effect and thus the unrecrystallized regions can be assumed to be weaker than the fine-grained matrix. A similar interplay of recrystallized and unrecrystallized regions is described by Oh-ishi et al for Mg-ZnAg-Ca-Zr alloys [25] and by Tong et al [59] and Zhang et al [60] for Mg-Zn-Ca alloys.…”

“…As discussed in [60], the high defect density restricts further dislocation accumulation and thus reduces the work-hardening capacity, with the effect of a reduced elongation to fracture ( Table 4). …”

Enhancing mechanical properties of Mg–Sn alloys by combining addition of Ca and Zn

“…The phase at position 1 is rod-like and contains 0.7 at.% Ca, 1.2 at.% Zn and 0.7 Sn at.% Sn, so it is identified as the MgSnCa solid solution with dissolved Zn [32]. The phase at position 2 is round and contains 0.8 at.% Ca and 2.3 at.% Zn, and it is expected to be the MgZnCa phase [33]. The phase at position 3 is also round but only contains 1.7 at.% Zn, so it is identified as the MgZn 2 phase [34].…”

Effect of Extrusion Temperature on the Microstructure and Mechanical Properties of Mg–5Al–2Ca Alloy

“…The coarsening rate of the grain was increased with increasing temperature [19]. The higher the extrusion temperature, the larger the grain size [20,21], so the average grain size increased obviously as the temperature increased from 623 to 673 K, as shown in Fig. 2c alloys mainly consist of eutectic Al 2 Ca and Mg.…”