摘要
Ultrahigh pressure technique remarkably extends solid solubility limitation of Al alloying element(~25 at.%)in Mg alloys,resulting in unique solid-solution strengthening and age hardening response.Microhardness,yield strength and ultimate compressive strength are improved simultaneously without degrading plasticity by forming homogeneous and globular-shaped Mg17Al12 precipitates of 10e30 nm.In addition,thermal resistance is enhanced by eliminating the dominant growth of(101)plane and anchoring dense stacking faults in phase interface.
基金
We greatly acknowledge the financial support from NSFC(no.51771162,51422105)
National Key Research and Development Program(2017YFB0702001)
Distinguished Youth Foundation of Hebei Province(E2015203404).
