A comparison of properties of indirect and hydrostatic extruded AZ31


The AZ31 material for the comparison was produced under similar extrusion conditions using either an indirect or hydrostatic extrusion press. The extrusion temperature was 300°C and the ratio was 23 for the indirect and 28 for the hydrostatic process using an extrusion rate of 8 m/min. The comparison focuses on microstructure, corrosion and mechanical properties measured in air and diluted aqueous chloride solutions. The different extrusion processes result in different microstructures especially grain size, thus influences on the properties can be expected.
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