The invention includes a method of producing a hard metallic material by forming a mixture containing at least 55% iron and at least one of B, C, Si and P. The mixture is formed into an alloy and cooled to form a metallic material having a hardness greater than about 9.2 GPa. The invention includes
The invention includes a method of producing a hard metallic material by forming a mixture containing at least 55% iron and at least one of B, C, Si and P. The mixture is formed into an alloy and cooled to form a metallic material having a hardness greater than about 9.2 GPa. The invention includes a method of forming a wire by combining a metal strip and a powder. The strip and the powder are rolled to form a wire containing at least 55% iron and from 2-7 additional elements including at least one of C, Si and B. The invention also includes a method of forming a hardened surface on a substrate by processing a solid mass to form a powder, applying the powder to a surface to form a layer containing metallic glass, and converting the glass to a crystalline material having a nanocrystalline grain size.
대표청구항▼
1. A method of producing a hard metallic material, comprising: providing a mixture of elements, the mixture comprising at least about 55 percent Fe by weight, and comprising B; forming the mixture into an alloy; and cooling the alloy at a rate of less than about 5000 K per second to form a meta
1. A method of producing a hard metallic material, comprising: providing a mixture of elements, the mixture comprising at least about 55 percent Fe by weight, and comprising B; forming the mixture into an alloy; and cooling the alloy at a rate of less than about 5000 K per second to form a metallic material having a hardness of greater than about 9.2 GPa. 2. The method of claim 1 wherein the metallic material is in ingot form. 3. The method of claim 1 wherein the mixture comprises at least one transition metal selected from the group consisting of W, Mo, Cr and Mn. 4. The method of claim 1 wherein the mixture comprises one or more of Al and Gd. 5. The method of claim 1 wherein the mixture further comprises one or more of P, C and Si. 6. The method of claim 1 wherein the mixture comprises B, C and Si at an atomic ratio of B17C5Si1. 7. The method of claim 1 wherein the mixture comprises a composition selected from the group consisting of Fe63B17C3Si3,(Fe0.8 Cr0.2)79B17W2C2,Fe63B17C3Si5,Fe63B17C2W2,Fe63B17C8,Fe63B17C5,(Fe0.8 Cr0.2)78Mo2W2B12C5Si1,Fe63B17C5W5,Fe63B17C5Si5,(Fe0.8 Cr0.2)76Mo2W2B14C5Si1,(Fe0.8 Cr0.2)73Mo2W2B16C4Si1Mn2,Fe63Cr8Mo2B17C5,(Fe0.8 Cr0.2)75Mo2B17C5Si1,Fe63Cr8Mo2B17C5Si1Al4,(Fe0.8, Cr0.2)75W2B17C5Si1,Fe63B17C5Si1,(Fe0.8 Cr0.2)73Mo2W2B17C5Si1,(Fe0.8 Cr0.2)72Mo2W2B17C5Si1Gd1,(Fe0.8 Cr0.2)71Mo2W2B17C5Si1Gd2,and (Fe0.8 Cr0.2)74Mo2W2B17C4Si1. 8. The method of claim 1 wherein the alloy comprises a melting temperature of less than or equal to about 1550° C. 9. The method of claim 1 wherein the mixture consists essentially of fewer than 11 elements. 10. The method of claim 1 wherein the mixture consists essentially of fewer than 9 elements.
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