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In this study, ZK60 Mg alloys were prepared via hot-press sintering under a constant pressure of 30 MPa as well as Ar atmosphere. The sintering temperature was determined to be in the range of 450–600 °C with an interval of 50 °C. The effect of sintering temperature on the microstructures and mechanical properties of the alloys was investigated. All the four sintered alloys mainly exhibited an α-Mg-phase structure and equiaxed grain microstructure. However, a specific amount of melt, enriched in Zn element, formed when the sintering temperature reached 500 °C. Thus, only the alloy sintered at 450 °C maintained the nominal composition of the alloy powder, and exhibited the favorable yield strength and hardness, which was 135.1 MPa and 57 HV, respectively. The alloys sintered at 550 °C and 600 °C exhibited a reduced yield strength and hardness due to the loss of Zn element.

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ZK60 magnesium alloy was prepared via the spark plasma sintering technique in the temperature range of 350–450°C with an interval of 50°C. The effect of the sintering temperature on the microstructure and mechanical properties of the alloy was investigated. The three sintered alloys contained the α-Mg phase and a small fraction of the MgZn2 phase, and exhibited dense microstructures containing equiaxed grains. The alloy sintered at 400°C exhibited the highest relative density among the three alloys, with an average grain size of 5.42 µm. The yield strength, compressive strength, and fracture strain of the alloy were 130, 270 MPa, and 8%, respectively, corresponding to the most favourable mechanical properties among the three alloys.