A microcrystalline (MC) material with record-breaking mechanical properties has been obtained by equal channel angular pressing of AMg6 cast aluminum alloy samples. The ultimate tensile strength of MC AMg6 alloy reaches 440 MPa, which is twice as much as that of the cast alloy. At the same time, it shows double plasticity at the room temperature as compared to its cast counterparts. The MC AMg6 alloy ultimate tensile strength has also been found to increase up to 540 MPa after additional cold rolling. In the range of low-temperature superplasticity (250-275°C), the elongation to failure of MC AMg6 alloy reaches 320%, which is 6 times greater than that of the commercial alloy tested under similar conditions
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