Bulk-solidifying high manganese non-ferromagnetic amorphous steel alloys and related method of using and making the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C22C-045/02
C22C-045/00
출원번호
UP-0446098
(2006-06-02)
등록번호
US-7517416
(2009-07-01)
발명자
/ 주소
Poon, S. Joseph
Shiflet, Gary J.
Ponnambalam, Vijayabarathi
출원인 / 주소
University of Virginia Patent Foundation
대리인 / 주소
Decker, Robert J.
인용정보
피인용 횟수 :
0인용 특허 :
21
초록▼
Iron based amorphous steel alloy having a high Manganese content and being non-ferromagnetic at ambient temperature. The bulk-solidifying ferrous-based amorphous alloys are multicomponent systems that contain about 50 atomic percent iron as the major component. The remaining composition combines sui
Iron based amorphous steel alloy having a high Manganese content and being non-ferromagnetic at ambient temperature. The bulk-solidifying ferrous-based amorphous alloys are multicomponent systems that contain about 50 atomic percent iron as the major component. The remaining composition combines suitable mixtures of metalloids (Group b elements) and other elements selected mainly from manganese, chromium, and refractory metals. Various classes of non-ferromagnetic ferrous-based bulk amorphous metal alloys are obtained. One class is a high-manganese class that contains manganese and boron as the principal alloying components. Another class is a high manganese-high molybdenum class that contains manganese, molybdenum, and carbon as the principal alloying components. These bulk-solidifying amorphous alloys can be obtained in various forms and shape for various applications and utlizations. The good processability of these alloys can be attributed to the high reduced glass temperature Trg (e.g., about 0.6 to 0.63) and large supercooled liquid region ΔTx (e.g., about 50-100° C.).
대표청구항▼
We claim: 1. An Fe-based non-ferromagnetic amorphous steel alloy comprised substantially of a composition represented by the formula: Fe100-a-b-c-d-eMnaMobCrcB dCe wherein a, b, c, d, and e respectively satisfy the relations: 13≧a≧8, 17≧b≧12, 5≧c≧0, 7≧d&
We claim: 1. An Fe-based non-ferromagnetic amorphous steel alloy comprised substantially of a composition represented by the formula: Fe100-a-b-c-d-eMnaMobCrcB dCe wherein a, b, c, d, and e respectively satisfy the relations: 13≧a≧8, 17≧b≧12, 5≧c≧0, 7≧d≧4, 17≧e≧13, these subscript values indicating the atomic percent amounts of the constituent elements of the composition. 2. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy has a temperature interval ΔTx at least about 45° C. as determined by the following formula: ΔTx=Tx-Tg wherein Tx is an onset temperature of crystallization and Tg is a glass transition temperature. 3. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy has a glass transition temperature Tg of at least about 530° C. 4. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy has a reduced glass temperature of Trg of at least about 0.59, as determined by the following formula: Trg=Tg/Tl wherein Tg is the glass transition temperature and Tl is the liquidus temperature, both in units of Kelvin. 5. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy has a Curie point below-100° C. 6. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy has a spin-glass transition temperature below about-100° C. 7. The Fe-based alloy as set forth in claim 1, further comprising from about 1.0 to about 3.0 atomic % of at least one element selected from Ga, V, and W. 8. The Fe-based alloy as set forth in claim 1, wherein the Fe-based alloy has composition substantially represented by the formula Fe51Mn10Mo14Cr4B6C15 . 9. The Fe-based alloy as set forth in claim 1, wherein upon immersion in a 0.6M NaCl solution with pH of 6.001, said Fe-based alloy exhibits a passivating current of about 8×10-7 to about 1×10-6 A/cm2, a passive region of about 0.8 V, and pitting potential of at least about +0.5 V. 10. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into bulk amorphous samples of at least about 0.1 mm in thickness in its minimum dimension. 11. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into bulk amorphous samples of at least about 0.5 mm in thickness in its minimum dimension. 12. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into bulk amorphous samples of at least about 1.0 mm in thickness. 13. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into bulk amorphous samples of at least about 10.0 mm in thickness. 14. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into a corrosion resistant coating. 15. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into a wear-resistant coating. 16. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into a structure selected from the group consisting of ship frames, submarine frames, vehicle frames, ship parts, submarine parts, and vehicle parts. 17. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into a structure selected from the group consisting of armor penetrators, projectiles, protection armors, rods, train rails, cable armor, power shaft, and actuators. 18. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into a structure selected from the group consisting of engineering and medical materials and tools. 19. The Fe-based alloy as set forth in claim 1, wherein said Fe-based alloy is processable into a structure selected from the group consisting of cell phone and PDA casings, housings, and components, electronics and computer casings, housings and components. 20. An Fe-based amorphous steel alloy comprised substantially of a composition represented by the formula: Fe100-a-b-c-d-eMnaMobCrcB dCe wherein a, b, c, d, and e respectively satisfy the relations: 13≧a≧8, 17≧b≧12, 5≧c≧0, 7≧d≧4, 17≧e≧13, these subscript values indicating the atomic percent amounts of the constituent elements of the composition; and wherein said alloy is processable into bulk amorphous sample of at least about 0.1 mm in thickness in its minimum dimension. 21. An Fe-based non-ferromagnetic amorphous steel alloy comprised substantially of a composition represented by the formula (in atomic percent): (Fe)a(Mn, Cr, Mo)b(B, C)c wherein 45≧a≧55, 23≧b≧33, 18≧c≧24, and the sum of a, b, and c is 100 and under the following constraints that Mo content is at least about 12%, Mn content is at least about 7%, Cr content is at least about 3%, C content is at least about 13%, and B content is at least about 4% in the overall alloy composition. 22. An article of Fe-based amorphous steel alloy, having minimum dimension of at least about 0.1 mm, and comprised substantially of a composition represented by the formula (in atomic percent): (Fe)a(Mn, Cr, Mo)b(B, C)c wherein 45≧a≧55, 23≧b≧33, 18≧c≧24, and the sum of a, b, and c is 100 and under the following constraints that Mo content is at least about 12%, Mn content is at least about 7%, Cr content is at least about 3%, C content is at least about 13%, and B content is at least about 4% in the overall alloy composition.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (21)
Xing, Li-Qian; Hufnagel, Todd C.; Ramesh, Kaliat T., Alloy with metallic glass and quasi-crystalline properties.
Peker Atakan (Pasadena CA) Johnson William L. (Pasadena CA) Schafer Robert (Worthington OH) Scruggs David M. (Oceanside CA), Amorphous metal/reinforcement composite material.
Poon,S. Joseph; Shiflet,Gary J.; Ponnambalam,Vijayabarathi, Bulk-solidifying high manganese non-ferromagnetic amorphous steel alloys and related method of using and making the same.
Hays, Charles C., Microstructure controlled shear band pattern formation in ductile metal/bulk metallic glass matrix composites prepared by SLR processing.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.