High-entropy alloys with high strength
AssigneeTrustees of Dartmouth College
InventorsMargaret Wu, Ian Baker
Life of this patent
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Abstract
The disclosure provides high strength high-entropy alloys with compositions (in atomic %) of FeaNibMncAldCreCf where 37-43 atomic %, b is 8-14 atomic %, c is 27-33 atomic %, d is 4-10 atomic %, e is 10-14 atomic %, and f is 0-2 atomic %.
Claims13
A high-entropy alloy (HEA) having a formula of FeaNibMncAldCreCf wherein a is between 37-43 atomic %, b is between 8-14 atomic %, c is between 27-33 atomic %, d is between 4-10 atomic %, e is between 10-14 atomic %, and f is between 0-2 atomic %, wherein the HEA has a three-phase structure which comprises FeMn-enriched laths and NiAl-rich precipitates inside Cr-concentrated regions.
A high-entropy alloy (HEA) having a formula of FeaNibMncAldCre, wherein a is between 37-43 atomic %, b is between 8-14 atomic %, c is between 27-33 atomic %, d is between 4-10 atomic %, and e is between 10-14 atomic %, wherein the HEA comprises a Cr-rich, b.c.c. and Fe,Mn-rich f.c.c. dendritic-interdendritic microstructure with Ni-rich particles dispersed within the Cr-rich region.
A multiphase high-entropy alloy (HEA) FeNiMnAlCr, comprising
- Fe in an amount of between 37-43 atomic %;
- Ni in an amount of between 8-14 atomic %;
- Mn in an amount of between 27-33 atomic %;
- Al in an amount of between 4-10 atomic %;
- and
- Cr in an amount of between 10-14 atomic %,
- wherein the HEA has a three-phase structure which comprises FeMn-enriched laths and NiAl-rich precipitates inside Cr-concentrated regions.
Dependencies are inferred from the claim text.