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US 11,535,913 B2Granted
Multi-material component and methods of making thereof
AssigneeHonda Motor Co., Ltd.
InventorsJianxun Hu, Eric Walker
Life of this patent
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Abstract
A multi-material component joined by a high entropy alloy is provided, as well as methods of making a multi-material component by joining dissimilar materials with high entropy alloys.
Claims20
A multi-material component comprising:
- a first member comprising a first steel, wherein the first member comprises a coating;
- a second member comprising a second steel that is a different composition than the first steel;
- and
- a third member welded to the first member and the second member, the third member comprising a high entropy alloy, the high entropy alloy is a solid solution comprising a face-centered cubic single phase solid solution or a body-centered cubic single phase solid solution, or a combination of face-centered cubic and body-centered cubic phases, the high entropy alloy comprises at least four principal elements,
- wherein each of the at least four principal elements comprises at least 5 atomic % of the high entropy alloy, relative amounts of each of the at least four principal elements vary no more than 15 atomic %, and the high entropy alloy comprises a mixing entropy of greater than 1.3R, wherein the entropy of mixing is determined using the equation ΔSmix=RlnN, wherein R is the gas constant and N is the total number of elements.
2 more elements
A multi-material component comprising:
- a first member comprising a first steel, wherein the first member comprises a coating;
- a second member comprising a second steel that is a different composition than the first steel;
- and
- a third member welded to the first member and the second member, the third member comprising a high entropy alloy, the high entropy alloy is a solid solution comprising a face-centered cubic single phase solid solution or a body-centered cubic single phase solid solution, or a combination of face-centered cubic and body-centered cubic phases, the high entropy alloy comprises at least four principal elements and two of the at least four principal elements are Mn and Fe,
- wherein each of the at least four principal elements comprises at least 5 atomic % of the high entropy alloy, the at least four principal elements comprise at least 70 atomic % of the high entropy alloy, and the high entropy alloy comprises a mixing entropy of greater than 1.3R, wherein the entropy of mixing is determined using the equation ΔSmix=RlnN, wherein R is the gas constant and N is the total number of elements.
2 more elements
A multi-material component comprising:
- a first member comprising a first steel, wherein the first member comprises a coating, and wherein the coating of the first member comprises at least Zn, Al or Si;
- a second member comprising a second steel that is a different composition than the first steel;
- and
- a third member welded to the first member and the second member, the third member comprising a high entropy alloy, the high entropy alloy is a solid solution comprising a face-centered cubic single phase solid solution or a body-centered cubic single phase solid solution, or a combination of face-centered cubic and body-centered cubic phases, the high entropy alloy comprises at least four principal elements,
- wherein each of the at least four principal elements comprises at least 5 atomic % of the high entropy alloy, relative amounts of each of the at least four principal elements vary no more than 15 atomic %, and the high entropy alloy comprises a mixing entropy of greater than 1.3R, wherein the entropy of mixing is determined using the equation ΔSmix=RlnN, wherein R is the gas constant and N is the total number of elements.
2 more elements
Dependencies are inferred from the claim text.