Fig. 1 Microstructures of as-casted AM80 Mg alloys; (a) ingot and (b) billet for hot-extrusion
Fig. 2 Change in the Extrusion pressure of AM80 Mg Alloys during hot extrusion at different extrusion temperature and surface of as-extruded alloys
Fig. 3 microstructures and average grain size of asextruded rods at different extrusion temperature; (a) 300℃, (b) 320℃, (c) 350℃ and (d) 380℃
Fig. 4. Mechanical properties of the extruded rods withdifferent extrusion temperature.
Fig. 5 Change in the extrusion pressure of AM80 Mg Alloy during hot extrusion at different extrusion ratio and surface of as-extruded alloys
Fig. 6 Microstructures and average grain size of the extruded rods with different extrusion ratio; (a) 12:1, (b) 19:1 and (c) 27:1
Fig. 7 Relationship between extrusion ratio and true strain.
Fig. 8 Mechanical properties of the extruded rods with different extrusion ratio
Fig. 9 Change in the extrusion pressure of AM80 Mg Alloys during hot extrusion with different ram speed and surface of as-extruded alloys
Fig. 10 Microstructures and average grain size of the extruded rods alloy with different ram speed; (a) 2mm/s and (b) 4mm/s
Fig. 11 Mechanical properties of the extruded bars with different extrusion ram speed
Table 1 Chemical composition of the AM80 Mg alloys. (wt%)
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