High-strength aluminum alloy coatings, deformation layers and methods of making the same
A high-strength aluminum alloy coating. The coating includes aluminum, 9R phase, fine grains, nanotwins, stacking faults, and a solute capable of stabilizing the 9R phase, the fine grains, and the stacking faults. A method of making a high-strength aluminum alloy coating on a substrate. The method includes, depositing the constituents of an aluminum alloy on a substrate such that the deposit forms a high-strength aluminum alloy coating containing 9R phase, fine grains, nanotwins, and stacking faults. A high-strength deformation layer in and on a casting of an aluminum alloy containing 9R phase, fine grains, nanotwins, stacking faults, and a solute capable of stabilizing the PR phase, the fine grains, and the stacking faults. A method of making a high-strength deformation layer in and on a casting of an aluminum alloy by deforming the alloy such that deformation layer contains 9R phase, fine grains, nanotwins, and stacking faults.
1. A method of making a high-strength aluminum alloy coating on a substrate, the method comprising:
providing a substrate;
depositing atoms of the constituents of an aluminum alloy on the substrate utilizing a deposition method, wherein the deposited atoms form a high-strength aluminum alloy coating containing 9R phase, grains in the size range of 2 nm-10,000 nm, nanotwins, and a solute capable of stabilizing the 9R phase.
2. The method of claim 1 , wherein the deposition method is one of sputtering, evaporation, laser ablation, and physical vapor deposition.
3. The method of claim 1 , wherein the substrate is a semiconductor.
4. The method of claim 3 , wherein the semiconductor is one of silicon, germanium, and gallium arsenide.
5. The method of claim 1 , wherein the substrate is a metal or an alloy.
6. The method of claim 5 , wherein the metal is one of copper, nickel, aluminum, iron, and titanium.
7. The method of claim 5 , wherein the alloy is one of an aluminum alloy, a copper alloy a nickel alloy and a titanium alloy.
8. The method of claim 7 , wherein the aluminum alloy comprises one or more of iron, cobalt, titanium, magnesium, and chromium.
9. A high-strength deformation layer in and on a casting of an aluminum alloy, wherein the high-strength deformation layer includes an aluminum alloy comprising:
aluminum;
9R phase;
grains in the size range of 2 nm-10,000 nm;
nanotwins; and
a solute capable of stabilizing the 9R phase.
10. The high-strength deformation layer of claim 9 , wherein the fine grains are equiaxed or columnar.
11. The high-strength deformation layer of claim 9 , wherein inter-twin spacing of the nanotwins is in the range 1 nm-200 nm.
12. The high-strength deformation layer of claim 9 , wherein the solute is one of iron, cobalt, titanium, magnesium, and chromium.
13. The high-strength deformation layer of claim 12 , wherein the solute is iron.
14. The high-strength deformation layer of claim 13 , wherein the iron content is in the range of 1-30 atomic percent.
15. A method of making a high-strength deformation layer in and on a casting of an aluminum alloy, the method comprising:
providing a casting of an aluminum alloy; and
deforming the alloy by a deformation method, wherein the deformation results in a high-strength aluminum alloy comprising a deformation layer 9R phase, grains in the size range of 2 nm-10,000 nm, nanotwins, and a solute capable of stabilizing the 9R phase.
16. The method of claim 15 , wherein the deformation method is one of rolling, extrusion, forging, and stamping.