Bulk solidifying amorphous alloys with improved mechanical properties
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C22C-045/00
C22B-009/04
출원번호
US-0364128
(2012-02-01)
등록번호
US-8882940
(2014-11-11)
발명자
/ 주소
Johnson, William
Schroers, Jan
출원인 / 주소
Crucible Intellectual Property, LLC
대리인 / 주소
Pillsbury Winthrop Shaw Pittman LLP
인용정보
피인용 횟수 :
0인용 특허 :
65
초록▼
Bulk solidifying amorphous alloys exhibiting improved processing and mechanical properties and methods of forming these alloys are provided. The bulk solidifying amorphous alloys are composed to have high Poisson's ratio values. Exemplary Pt-based bulk solidifying amorphous alloys having such high P
Bulk solidifying amorphous alloys exhibiting improved processing and mechanical properties and methods of forming these alloys are provided. The bulk solidifying amorphous alloys are composed to have high Poisson's ratio values. Exemplary Pt-based bulk solidifying amorphous alloys having such high Poisson's ratio values are also described. The Pt-based alloys are based on Pt—Ni—Co—Cu—P alloys, and the mechanical properties of one exemplary alloy having a composition of substantially Pt57.5Cu14.7Ni5.3P22.5 are also described.
대표청구항▼
1. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume throughout the three-dimensional object from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten v
1. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume throughout the three-dimensional object from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy;quenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume;reheating the as-cast object having no more than about 50% crystalline phase by volume in a supercooled region after quenching to form a reheated alloy, andre-quenching the alloy from the supercooled region to a temperature below its glass transition temperature at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume;wherein during or after the reheating the as-cast object is put under vacuum until no bubble flotation is present. 2. The method of claim 1, wherein the Poisson's ratio for the as-cast object and the reheated alloy does not differ by more than 5%. 3. The method of claim 2, wherein the Poisson's ratio of the reheated alloy is at least 0.38. 4. The method of claim 1, wherein the step of quenching or re-quenching comprises cooling the bulk solidifying amorphous alloy at a rate substantially faster than the critical cooling rate of the alloy. 5. The method of claim 1, further comprising: providing two or more pieces of the bulk-solidifying amorphous alloy; andbonding said pieces together by applying pressure that results in the physical contact of the pieces during the reheating step. 6. The method of claim 1, wherein the three-dimensional object has minimum dimensions of at least 1.0 mm in all dimensions. 7. The method of claim 1, wherein a near net shape object is formed at a temperature between the glass transition temperature and the crystallization temperature of the alloy. 8. The method of claim 1, further comprising: providing a quantity of feedstock materials for the alloy; andmelting the feedstock under vacuum to form the molten alloy such that no flotation of bubbles is present. 9. The method of claim 8, wherein after inciting under vacuum the pressure is increased from about 5 psi to about 150 psi. 10. The method of claim 1, wherein the molten alloy is processed under vacuum. 11. The method of claim 1, wherein the bulk-solidifying amorphous alloy is Pt57.5Cu14.7Ni5.3P22.5 and the alloy is reheated in the supercooled liquid region for a time and temperature such that the crystalline phase of the alloy by volume is less than 3%, and the fracture toughness after this process is more than 60 MPa m1/2. 12. The method of claim 1, wherein the alloy comprises a Pt-based bulk-solidifying amorphous alloy according to a formula: (Pt,Pd)1-xPGMx)a((Cu,Co,Ni)1-yTMy)b(P,Si)1-zOMz)c, where a is from about 35 to 50 atomic percent, b is from about 30 to 45 atomic percent, c is from about 18 to 20 atomic percent, wherein Pt and P are each at least about 10 atomic percent of the whole, and where the total of Ni and Co content is at least about 2 atomic percentage; where PGM is selected from the group consisting of Ir, Os, Au, W, Ru, Rh, Ta, Nb, and Mo; where TM is selected from the group consisting of Fe, Zn, Ag, Mn, and V; where OM is selected from the group consisting of B, Al, Ga, Ge, Sn, Sb, and As; and where the x, y, and z fraction follow the following constraints: z is less than about 0.3, the sum of x, y, and z is less than about 0.5, x is from about 0 to 0.1 and y is less than about 0.2. 13. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the alloy comprises a Pt-based bulk-solidifying amorphous alloy according to a formula PtaCobCucNidPe, wherein a is from about 39 to about 50 atomic percentage, b is from about 0 to 15 atomic percent, c is from about 12 to about 35 atomic percentage, d is from 0 to 15 atomic percent, and e is from about 17 to about 29 atomic percent, wherein the sum of b and d is greater than 2 atomic percent, and wherein Pt comprises at least 75 percent of the Pt-based alloy by weight. 14. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the alloy comprises a Pt-based hulk-solidifying amorphous alloy according to a formula PtaCobCucNidPe, wherein a is from about 54 to about 64 atomic percentage, b is from about 0 to 8 atomic percent, c is from about 9 to about 20 atomic percentage, d is from 0 to 12 atomic percent, and e is from about 17 to about 24 atomic percent, wherein the sum of b and d is greater than 2 atomic percent, and wherein Pt comprises at least 85 percent of the Pt-based alloy by weight. 15. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the alloy comprises a Pt-based bulk-solidifying amorphous alloy according to a formula (Pt,Pd)aCobCucNidPe, wherein a is from about 20 to about 65 atomic percentage, b is from about 0 to 8 atomic percent, c is from about 9 to about 20 atomic percentage, d is from 0 to 12 atomic percent, and e is from about 17 to about 24 atomic percent, wherein the sum of b and d is greater than 2 atomic percent; wherein Pt comprises at least 85 percent of the Pt-based bulk-solidifying alloy by weight,wherein the total content of Pd and Pt in the alloy is less than about 40 atomic percent the ratio of Pd to Pt is up to 4,wherein the total content of Pd and Pt is between about 40 to about 50 atomic percent the ratio of Pd to Pt is up to 6, orwherein the total content of Pd and Pt is greater than 50 atomic percent the ratio of Pd to Pt is up to 8. 16. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the alloy comprises a Pt-based bulk-solidifying amorphous alloy according to a formula: (Pt1-xPdx)a(Cu1-y(Co,Ni)y)b(P1-zSiz)c, where a is in the range of about 35 to 50 atomic percent, b is in the range of about 30 to 45 atomic percent, c is in the range of about 18 to 20 atomic percent, x is in the range of about 0 to 0.8, y is in the range of about 0.05 to 1, and z is in the range of about 0 to 0.4. 17. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the alloy comprises a Pt-based bulk solidifying amorphous alloy according to a formula: Pta(Cu1-yNiy)bPc, where a is in the range of about 35 to 50 atomic percent, b is in the range of about 30 to 45 atomic percent, c is in the range of about 18 to 20 atomic percent and y is in the range of about 0.05 to 1. 18. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the bulk-solidifying amorphous alloy has a following composition: (Pt,Pd)xMyPz wherein M is a combination of at least Cu and Ni, having a ratio of Cu to Ni of from about 1 to 4, x is from about 20 to 60 atomic percent, y is from 15 to 60 atomic percent and z is from about 16 to 24 atomic percent, and wherein Pd is optionally included in the alloy; wherein the combination of components has a Poisson's ratio of at least 0.38; the alloy exhibiting an elastic strain limit of at least about 1.5%, a ductility of more than about 10% under compression geometries with aspect ratio more than about 2, a bend ductility of more than about 3% under bending geometries with a thickness more than about 2.0 mm, and a fracture toughness greater than about 35 MPa m1/2. 19. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the alloy comprises a Pt-based bulk-solidifying amorphous alloy according to a formula (Pt,Pd)1-xPGMx)a((Cu,Co,Ni)1-yTMy)b(P,Si)1-zOMx)c, wherein a is from about 20 to 65 atomic percent, b is from about 15 to 60 atomic percent, c is from about 16 to 24 atomic percent; wherein the concentration of Pt is at least about 10 atomic percent; wherein Co is non-zero concentration and the total combine concentration of Ni and Co is at least about 2 atomic percent; wherein the concentration of P is at least 10 atomic percent; wherein PGM is selected from the group consisting of Ir, Os, Au, W, Ru, Rh, Ta, Nb, and Mo; wherein TM is selected from the group consisting of Fe, Zn, Ag, Mn, and V; wherein OM is selected from the group consisting of B, Al, Ga, Ge, Sn, Sb, and As; and wherein the x, y, and z are atomic fractions having the following constraints: z is less than about 0.3, the sum of x, y, and z is less than about 0.5; and when a is less than 35, x is less than about 0.3 and y is less than about 0.1; when a is in the range of from about 35 to 50, x is less than about 0.2 and y is less than about 0.2; and when a is more than 50, x is less than about 0.1 and y is less than about 0.3; and wherein the combination of components has a Poisson's ratio of at least about 0.38. 20. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the bulk-solidifying amorphous alloy comprises a plurality of elemental components, wherein the bulk-solidifying amorphous alloy has a size of a notch tip plastic zone that is larger than that of a Zr-based bulk-solidifying amorphous alloy, a yield strength of at least about 1400 MPa, a Vickers Hardness of at least about 358, a critical casting thickness of at least about 2 mm, an elastic strain limit of at least about 1.5%, a liquidus temperature below about 1273 K, a ratio of a glass transition temperature to the liquidus temperature of less than about 0.6, and a fracture toughness (K1c) greater than about 60 MPa m1/2. 21. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the bulk-solidifying amorphous alloy comprises a plurality of elemental components, wherein the bulk-solidifying amorphous alloy has a critical crack radius that is substantially larger than a critical crack radius in a Zr-based bulk solidifying amorphous alloy, a yield strength of at least about 1400 MPa, a Vickers Hardness of at least about 358, a critical casting thickness of at least about 2 mm, an elastic strain limit of at least about 1.5%, a liquidus temperature below about 1273 K, a ratio of a glass transition temperature to the liquidus temperature of less than about 0.6, and a fracture toughness (K1c) greater than about 60 MPa m1/2. 22. A method of forming a three-dimensional object having minimum dimensions of at least 0.5 mm in all dimensions and at least 50% amorphous phase by volume from an alloy comprising a bulk-solidifying amorphous alloy, the method comprising: providing a molten volume of the alloy; andquenching the entire volume of the alloy from above its melting temperature to a temperature below its glass transition temperature to form an as-cast object, wherein the quenching occurs at a sufficient rate to prevent formation of more than about 50% crystalline phase by volume, wherein the bulk-solidifying amorphous alloy comprises a plurality elemental components, wherein the bulk-solidifying amorphous alloy has a size of a notch tip plastic zone that is larger than that of a Zr-based bulk-solidifying amorphous alloy, a yield strength of at least about 1400 MPa, a Vickers Hardness of at least about 358, a critical casting thickness of at least about 2 mm, an elastic strain limit of at least about 1.5%, a liquidus temperature below about 1273 K, a glass transition temperature less than about 251 degree C., and a fracture toughness (K1c) greater than about 60 MPa m1/2.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (65)
Keshavan Madapusi K. (Indianapolis IN) Weatherly Merle H. (Indianapolis IN), Abrasion resistant coating composition.
Tenhover Michael A. (Solon OH) Henderson Richard S. (Solon OH) Grasselli Robert K. (Aurora OH), Amorphous metal alloy compositions and synthesis of same by solid state incorporation/reduction reactions.
Peker Atakan (Pasadena CA) Johnson William L. (Pasadena CA) Schafer Robert (Worthington OH) Scruggs David M. (Oceanside CA), Amorphous metal/diamond composite material.
Peker Atakan (Pasadena CA) Johnson William L. (Pasadena CA) Schafer Robert (Worthington OH) Scruggs David M. (Oceanside CA), Amorphous metal/reinforcement composite material.
Blaskovits Pavol (Bratislava CSX) Lesnak Stefan (Bratislava CSX) Martisik Aloiz (Bratislava CSX) Zajac Jan (Bratislava CSX) Slavkovsky Jan (Bratislava CSX) Turiansky Ladislav (Bratislava CSX) Levius , Apparatus for the electroslag surfacing of rolling mill rolls.
Kaiser John J. (Whitehall PA) Zurecki Zbigniew (Macungie PA) Berger Kerry R. (Lehighton PA) Swan Robert B. (Bath PA) Hayduk ; Jr. Edward A. (Blandon PA), Electric arc spray coating with cored wire.
Bose Debasis (Randolph NJ) Datta Amitava (Mendham NJ) DeCristofaro Nicholas J. (Catham NJ) Henschel Claude (Redwood City CA), Homogeneous, ductile iron based hardfacing foils.
Kuroki Hironori (Fukuoka JPX) Honda Tsuguo (Fukuoka JPX), Low alloy or carbon steel roll with a built-up weld layer of an iron alloy containing carbon, chromium, molybdenum and c.
Tenkula Jaakko (Raahe FIX) Hellman Bjarne (Raahe FIX) Huusko Juha (Oulu FIX), Method of arc spraing and filler wire for producing a coating which is highly resistant to mechanical and/or chemical we.
Asai Yoshihiko (Kitakyushu JPX) Hori Masao (Kitakyushu JPX) Tokumitsu Naoki (Kawasaki JPX), Method of electroslag surfacing of components having a cylindrical surface.
Dausinger Friedrich (Steinenhausenstr. 18 D7000 Stuttgart DEX) Mller Werner (Hermann-Essig-Str. 106 D-7141 Schwieberdingen DEX) von Roda Eckart (Riegelckerstr. 1 D-7250 Leonberg DEX) Reibetanz Wilber, Method of embedding hard cutting particles in a surface of a cutting edge of cutting tools, particularly saw blades, dri.
Kim Do Hyang,KRX ; Kim Won Tae,KRX ; Yi Sheng Hoon,KRX ; Lee Jin Kyu,KRX ; Lee Min Ha,KRX ; Park Tae Gyu,KRX ; Park Ju Gun,KRX ; Lim Hyun Kyu,KRX ; Jang Jong Shim,KRX, Nickel-based amorphous alloy compositions.
Ewe Henning H. (1B Mendelssohnstrasse D-33 Braunschweig DT) Justi Eduard W. (1B Mendelssohnstrasse D-33 Braunschweig DT), Porous cobalt electrodes for alkaline accumulators and hybrid cell therewith and air electrode.
Scruggs David M. (San Juan Capistrano CA) Croopnick Gerald A. (Trabuco Canyon CA), Tungsten carbide-containing hard alloy that may be processed by melting.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.