Unique strengthening mechanisms of ultrahigh pressure Mg alloys.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 29744464.
- Also identified by DOI 10.1016/j.bioactmat.2017.11.009 and PMC identifier 5935778.
- Licence recorded as CC BY-NC-ND.
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Abstract
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 Mg<sub>17</sub>Al<sub>12</sub> precipitates of 10-30 nm. In addition, thermal resistance is enhanced by eliminating the dominant growth of (101) plane and anchoring dense stacking faults in phase interface.