WO2003000945A1 - Geometrically articulated amorphous metal alloys, processes for their production and articles formed therefrom - Google Patents
Geometrically articulated amorphous metal alloys, processes for their production and articles formed therefrom Download PDFInfo
- Publication number
- WO2003000945A1 WO2003000945A1 PCT/US2002/020075 US0220075W WO03000945A1 WO 2003000945 A1 WO2003000945 A1 WO 2003000945A1 US 0220075 W US0220075 W US 0220075W WO 03000945 A1 WO03000945 A1 WO 03000945A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- articulated
- topographical
- metal alloy
- definitions
- amoφhous
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/04—Amorphous alloys with nickel or cobalt as the major constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15341—Preparation processes therefor
Definitions
- the present invention relates to the amorphous metal alloys having an articulated three-dimensional ("3-D") geometric texture therein, as well as a process for producing the same.
- Amo ⁇ hous metal alloys typically lack any substantial long range atomic order. These amo ⁇ hous metal alloys are characterized by X-ray diffraction patterns consisting of diffuse (broad) intensity maxima, qualitatively similar to the diffraction patterns observed for liquids or for inorganic oxide glasses. However, upon heating to a sufficiently high temperature, they begin to crystallize with the evolution of the heat of crystallization; correspondingly, the X-ray diffraction pattern thereby begins to change from that observed for amo ⁇ hous to that observed for crystalline materials. Consequently, amo ⁇ hous metal alloys are in a metastable state. This special metastable amo ⁇ hous state of the alloys confers unique mechanical and physical properties to the alloy.
- Amo ⁇ hous metal alloys generally possess physical properties such as hardness and strength exceeding those of their crystalline counte ⁇ arts. Since amorphous metal alloys, unlike crystalline alloys, have no long-range order in their atomic structure, the directionality of physical and magnetic properties normally associated with a crystalline periodic (crystalline) atomic structure is absent. Also, unlike conventional alloys, amo ⁇ hous metal alloys are extremely homogeneous, being devoid of compositional heterogeneity, inclusions, and various other microstructural defects, making them less subject to the deleterious effects of these potential stress concentrators.
- Amo ⁇ hous metal alloys can be made by various techniques. Electroplating, vapor deposition, and sputtering are all methods by which material is deposited on an atom-by-atom basis. Under appropriate conditions, the atoms are "frozen" in-situ on contact with a substrate surface and normally cannot diffuse into the lower energy atomic configurations associated with that of a stable, periodic crystalline lattice. The resulting metastable structure can be a non-crystalline (glassy) one. Such process methods, however, are not economically feasible for producing large commercial quantities of amorphous metal alloys.
- Another method for producing amorphous metal alloys is by rapidly cooling from the melt.
- Two major conditions apply in achieving a glassy structure by this method.
- the composition selected should have a high glass transition temperature, T g , and a low melting temperature, T n ⁇ .
- the glass transition temperature is that above which substantial atomic motion begins to occur.
- the melting temperature is that above which there is complete liquefication of a material. Specifically, the T g /T m ratio should be as large as possible.
- the liquid should be cooled as rapidly as possible from a temperature above T m to a temperature below T g .
- the cooling rate for a melt-quenching method must be great enough (approximately 1 million degrees/second) to circumvent crystallization which would otherwise occur.
- Even at the high cooling rates typically used only alloys with certain compositions can be melt-quenched into amo ⁇ hous metal alloys.
- One class of such amo ⁇ hous metal alloys consists of "glass-forming" metalloid atoms, eg. phosphorus, boron, silicon, and carbon as required alloy additions, usually in the 10 to 25 atomic percent range, in combination with late transition metal elements such as iron, nickel, cobalt, and chromium.
- Another class of metallic glasses consists of a mixture of early and late transition atoms.
- amo ⁇ hous metal alloys When subjected to sufficiently high mechanical stress, amo ⁇ hous metal alloys undergo heterogeneous plastic deformation through the formation of highly localized shear bands, at temperatures well below the glass transition temperature, T g .
- This type of heterogeneous plastic deformation is similar to that of conventional crystalline alloys.
- amorphous metal alloys exhibit high strength and high modulus, and exhibit a fracture stress that is only marginally greater than the yield stress. This results in only a small amount of extension on tension before ailure.
- the mode of plastic deformation near and above T g is one in which the macroscopic strain in the specimen results from homogeneous deformation by viscous-like flow throughout the entire sample volume.
- Fig. 1 is a graph which shows the time-temperature dependence for complete stress relaxation in an Fe 80 B ⁇ Si 9 amorphous metal alloy.
- Fig. 2a is a top view of an amorphous metal alloy strip having a geometrically repeating articulated topographical definition.
- Fig 2b is a side view of the amorphous metal alloy strip according to Fig.2a.
- Fig. 3a is a depiction of a further amo ⁇ hous metal alloy strip having a second articulated topographical definition, which is not geometrically repeating.
- Fig. 3b is a side view of the amo ⁇ hous metal alloy strip according to Fig.3a.
- Fig. 4 is a depiction of an embodiment of a cutting article produced from an amo ⁇ hous metal alloy strip having a geometrically repeating articulated topographical definition.
- amo ⁇ hous metal alloy articles having an articulated topographical definition.
- the present invention provides novel amo ⁇ hous metal alloy articles having an articulated topographical definition as well as processes for their production.
- Such articulated topographical definitions are created by the application of selected forces to a generally planar ("2-dimensonal") amo ⁇ hous metal foil or ribbon in order to introduce permanent deformations therein so to produce a non-planar (“3 -dimensional”) amo ⁇ hous metal foil or ribbon which includes a geometric pattern, texture, profile or other feature, collectively referred to as "articulated topographical definitions".
- articulated topographical definitions it is required only that there be introduced permanent deformations which will distort or distend the generally planar amo ⁇ hous metal foil or ribbon, as is usually applied in an "as cast” form, so to provide a permanent non-planar three-dimensional profile. Such may be likened to indentations.
- a single articulated topographical definition may be provided but more advantageously a plurality of geometrically repeating articulated topographical definitions.
- Such geometrically repeating articulated topographical definitions can be any shape or configuration which provide a regularly repeating pattern of articulated topographical definitions and ideally are those which show an interlock between their individual patterns.
- pyramidal shapes, square shapes, circular shapes, and hexagonal shapes can all be used without limitation.
- those which provide close packing at their base portions, especially hexagonal shape, pyramidal shape, square shapes, rectangular shapes, triangular shapes, etc. are to be generally preferred as the maximum amount of peaks per unit surface area of the articles can be produced.
- amo ⁇ hous metal alloy composition which may be provided with at least one but preferably a plurality of articulated topographical definitions may be practiced and is considered to be within the scope of the present inventive teaching.
- the compositions of amo ⁇ hous metal alloys which may be subjected to the process according to the invention include those which are primarily composed of Fe, Ni, Cr, Co and V, to which optionally, but in some cases desirably are added small amounts, i.e., from 0.1 to 15 atomic percent, but preferably from 0.5 to 6 atomic percent of certain elements such as Al, Si, Sn, Sb, Ge, In, or Be.
- amo ⁇ hous metal alloys are those which may be represented by either the formula:
- M is a metal selected from one or more of the ' group consisting of Fe, Ni,
- Z is one or more elements selected from the group Al, Si, Sn, Ge, In, Sb or
- FIGS 2a and 2b there are depicted one example of an amo ⁇ hous metal foil strip or tape (20) having a plurality of geometrically repeating articulated topographical definitions (24), where each of the articulated topographical definitions has a hexagonal base (26) and which tapers to a plateau (28) at the peak of each articulated topographical definitions (24).
- each of the articulated topographical definitions has a hexagonal base (26) and which tapers to a plateau (28) at the peak of each articulated topographical definitions (24).
- close packing of the individual articulated topographical definitions are possible due to the interlocking nature of the bases of each.
- the hexagonal geometry of these bases provides such close packing.
- each of the articulated topographical definitions according to the invention also have geometric dimensions which are to be considered.
- each articulated topographical definition has a base dimension, which includes a base area (21) within the plane of the amo ⁇ hous metal foil strip or tape (20).
- base dimension which includes a base area (21) within the plane of the amo ⁇ hous metal foil strip or tape (20).
- Fig. 2a This is depicted on Fig. 2a with regard to reference lines "a” and "b” each of which bisects the three generally hexagonal articulated topographical definitions, three (a', a", a'") on reference line “a” and three (b 1 , b", b'") on reference line “b”.
- a denser packing of articulated topographical definitions could easily have been introduced into the amorphous metal ribbon by providing generally hexagonal articulated topographical definitions having smaller individual base areas. It is also contemplated that articulated topographical definitions of different shapes and configurations could be used as well, and that such articulated topographical definitions need not have abutting bases as the layout of generally hexagonal articulated topographical definitions shown in Fig. 2a.
- Figures 3a and 3b illustrate an alternative embodiment of an amo ⁇ hous metal alloy ribbon (30) which has introduced therein a series of individual articulated topographical definitions (34) which are not closely packed, but which form individual discrete articulated topographical definitions.
- each of these individual articulated topographical definitions (34) are randomly positioned within the amo ⁇ hous metal alloy strip depicted, and indeed, these articulated topographical definitions are of different sizes.
- each of the depicted articulated topographical definitions is an equilateral triangle in its base, and tapers to a point (38) (intended to be extending outward of the paper, and depicted by a point)
- the non-packed arrangement of these articulated topographical definitions, as well as their different dimensions illustrates the concept that various configurations for articulated topographical definitions can be used and still enjoy the benefits of the invention.
- Figure 3 also illustrates the concept that articulated topographical definitions of different geometries and/or relative dimensions, including differing heights, can also be provided to a single amo ⁇ hous metal alloy foil according to the present inventive principles.
- the articulated topographical definitions are conveniently provided to the amo ⁇ hous metal alloy by use of a mechanical means such as a roller die or a stamping die.
- a roller die is generally intended to mean two rollers having upon their surfaces a series of mating configurations which are intended to impart upon a body, such as an amo ⁇ hous metal alloy strip or foil passing between the nip of these roller dies a series of articulated topographical definitions.
- a stamping die is meant a pair of dies having a mating surfaces, which are also intended to impart articulated topographical definitions to a material, particularly the amo ⁇ hous metal foils or strips described herein which are placed in between these two dies.
- either the roller or stamping die can be used for the compression of the amorphous metal alloy for the strips take place in order to impart permanent deformation to the planar, two-dimensional foil or strip so as to impart permanent, non-planar three- dimensional profiles.
- the present invention can be practiced in any number of variations.
- the most direct means is to heat the amorphous metal alloy foil or strip to an elevated temperature and subsequently stamp or otherwise deform said amorphous metal alloy foil or strip utilizing an appropriate die.
- the amorphous metal alloy foil or strip may be provided to a preheated die which is at a sufficiently elevated temperature such that during the stamping process the amo ⁇ hous metal alloy body will be rapidly heated to an appropriate temperature.
- both the amo ⁇ hous metal alloy foil or strip and the stamping die(s) are heated to an elevated temperature prior to or during the stamping process.
- the applicant has discovered that while a higher elevated temperature typically results in a shorter residence time in the die, or alternately less pressure required of the die such is not particularly to be desired where there is a significant risk of crystallization and/or of embrittlement of the amo ⁇ hous metal alloy foil or strip. Rather, it is beneficial to increase the residence time of the metal alloy foil or strip in the die while concurrently reducing the temperature of the stamping operation so that the risk or degree of crystallization is minimized. Such increased residence time also addresses the limitations of thermal diffusivity and ensures that the temperature throughout the thickness of the amo ⁇ hous metal alloy foil or strip is substantially uniform.
- the invention also provides abrasive articles formed of amo ⁇ hous metal alloy - articles having articulated topographical definitions, as well as process for making the same.
- articulated topographical definitions are provided to an amo ⁇ hous metal alloy or strip as described previously, and subsequently the alloys or strips are further treated to impart abrasive characteristics thereto.
- an abrasive medium such as any number of organic oxides or carbides are provided to at least one surface, and desirably to the region of the peaks of the articulated topographical definitions in the alloys or strips.
- the amo ⁇ hous metal alloy or strip which is known to be particularly hard provides a very useful substrate upon which the abrasive materials are applied.
- portions of the articulated topographical definition at or near the peak of said articulated topographical definitions are partially crystallized.
- Such selective crystallization would be expected to cause precipitation of very hard intermetallic phases of the composition of the amo ⁇ hous metal alloy.
- Such hard intermetallic phases are very effective as an abrasive medium, and are also very effective in providing cutting edges to articles formed of amo ⁇ hous metal alloys.
- This selective crystallization can take place by any of a number of means, and according to one particular method, it is contemplated that the use of a laser whose tight focus beam can be directed at or in the region of the peaks of the articulated topographical definitions can be used to provide such selective crystallization.
- hard abrasive particles may be adhered or otherwise associated with the articulated amo ⁇ hous metal alloy articles.
- adhesion or association may for example be achieved by adhesive bonding, plasma spraying, impact welding as well as other techniques know to the art but not elucidated here.
- Other methods not described herein, but which are believed to be useful in providing such selective crystallization are also contemplated to be useful and within the scope of the present invention.
- an abrasive article according to the invention is produced by providing cutting edges to the articulated topographical definitions of the amorphous metal alloy strips produced according to the method described generally • above.
- portions of the articulated topographical definitions, and especially the peaks of the articulated topographical definitions are removed subsequent to their formation. These are literally “lopped off exposing sha ⁇ cutting edges of the individual articulated topographical definitions. Such an operation can be done, for example, by grinding of portions of the articulated topographical definitions, or by any other mechanical operation, as well as by non-mechanical operations. It is only required that a portion of the articulated portions of the amo ⁇ hous metal alloys be provided with a cutting edge.
- FIG. 4 depicts in side view a cutting article according to the invention which includes an amorphous metal alloy strip (40) having a plurality of frustoconical articulated topographical definitions extending outwardly from a top face.
- the cutting edge (48) of each of these frustoconical articulated topographical definitions (44) is formed by grinding the peaks of articulated topographical definitions having a conical form so to remove the peaks thereof, resulting in the these frustoconical articulated topographical definitions (44).
- such a cutting article provides several unexpected and significant technical advantages over other cutting devices generally known in the art.
- the high hardness of the amo ⁇ hous metal alloys are expected to provide longer lasting keen cutting edges which provide a longer service life to a cutting article made therefrom.
- the articulated topographical definitions have their peaks "lopped off such as in a grinding operation, the resulting cutting edges are non-directional, that is to say that unlike a straight edge cutting article (such as a straight knife blade), cutting occurs upon any directional movement of the cutting articles described according to the present invention.
- orientation of cutting direction relative to a work piece is not a concern as in any direction, the cutting tool disposes a sha ⁇ edge for cutting.
- Such techniques include, by way of non- limiting example, formed by one or more of the known processes of electrochemical machining (ECM), electrical discharge machining (EDM), electrolytic machining, laser- beam machining (LBM), electron-beam machining (EBM), photochemical machining (PCM), or ultrasonic machining (USM).
- ECM electrochemical machining
- EDM electrical discharge machining
- LBM laser- beam machining
- EBM electron-beam machining
- PCM photochemical machining
- USM ultrasonic machining
- Edge formation may be followed with supplemental metallic or non-metallic coatings and procedures standard in the art such as coating with polytetrafluoroethylene (Teflon) or other lubricious materials, followed by heat treatments.
- Teflon polytetrafluoroethylene
- EDM process involves the use of an EDM tool which is fed into the area to be cut. A dielectric fluid is placed into the area to be cut and rapid, repetitive spark discharges are fed between the tool and the articulated amorphous metal alloy to remove conductive material and consequently produce an aperture. Multiple tools may be employed to produce the multiple desired apertures.
- the EDM process is especially useful in situations where the cutting will be irregular and is capable of producing up to about 200 simultaneous holes.
- the ECM process cuts the articulated amorphous metal alloys via anodic dissolution in a rapidly flowing electrolyte between the steel and the shaped electrode. As with EDM, ECM may be employed to simultaneously produce multiple apertures and is capable of producing up to about 100 simultaneous holes.
- amo ⁇ hous metal cutting article is mounted upon a suitable substrate, ideally one which is non-solid but which provides a more rigid support framework (such as a grid, peripheral or edge frame, etc.) than the articulated amorphous metal itself.
- a suitable substrate ideally one which is non-solid but which provides a more rigid support framework (such as a grid, peripheral or edge frame, etc.) than the articulated amorphous metal itself.
- any material removed during a cutting operation falls through the interior of each of the individual articulated topographical definitions and can be readily removed away from the surface or object being cut. This is significant, as this ensures that the cutting articles made according to the invention are non-clogging, thus further extending the useful service life of said cutting article.
- cutting devices include razors for use in personal care products i.e., shaving razors.
- Further cutting devices include other tools such as planes, files, rasps, Surform C ) -type tools, sanding and abrasive tools, grinding wheels wherein a strip of the geometrically articulated amo ⁇ hous metal alloys are mounted on the periphery of a wheel, as well as other tools not particularly elucidated here.
- tools such as planes, files, rasps, Surform C ) -type tools, sanding and abrasive tools, grinding wheels wherein a strip of the geometrically articulated amo ⁇ hous metal alloys are mounted on the periphery of a wheel, as well as other tools not particularly elucidated here.
- the structure and design of the cutting edge aperture in such cutting articles is essentially unlimited using non-traditional machining techniques. Circular, rounded, slotted, geometric, such as square or rectangular, and irregularly shaped features as well as any combination of these features can be formed and contoured.
- the contour of the cutting edge is also readily adjustable.
- the edge can be straight, beveled or shaped. Both lateral and longitudinal structures are readily formed using electrochemical machining, electrical discharge machining, electrolytic machining, laser-beam machining, electron beam machining, photochemical machining, ultrasonic machining, and other alternative machining techniques in a single step, in contrast to traditional grinding techniques which require extensive part manipulation and may not even be capable of producing these features.
- a particularly advantageous feature attained by the introduction of these articulated topographical definitions to an amo ⁇ hous metal foil or tape is that this facilitates the oriented stacking of multiple foils or strips.
- Such is particularly useful in the fabrication of any of a variety of devices which require built-up layers or stacks of amo ⁇ hous metal foils. For example, in the construction of transformers wherein a large number, typically in the excess of several hundreds of amo ⁇ hous metal foils are required in order to produce a round core, it has frequently been problematic in the actual handling steps required to the manufacture of this core.
- the smooth, slippery surface of the amo ⁇ hous metal foils typically require the utilization of a frame, jig, or other holding means (including epoxy glues, and the like) in order to maintain the desired geometric configuration of these layers of amo ⁇ hous metal foils or strips.
- a frame, jig, or other holding means including epoxy glues, and the like
- the articulated topographical definitions which are introduced to the foil or strips much of these technical problems associated with fabrication are eliminated. This is due to the fact that wherein a regularly repeating pattern is introduced, these provide nesting between the various layers. This nesting provides physical retention and interlocking between the individual layers, and removes or diminishes the necessity for any holding means, particularly chemical holding means such as glues, epoxies or the like. Such interlocking between successive layers also provides for enhanced degree of rigidly in the finely assembled construction or assembly.
- wound cores such as used in transformers
- beneficial features of stacked and interlocking amo ⁇ hous metal foils or strips can be utilized in stacked cores which are also known in the transformer art.
- Input stock for development of the present invention was made by planar flow casting 25.4 mm wide Ni 6 Cr 7 Fe 3 B] 4 Si 8 amorphous metal alloy ribbon. One cast was used to make ribbon having thickness 40 ⁇ m while another cast was used to make ribbon of thickness 90 ⁇ m.
- An Instron ® tensile testing unit was equipped with an oven to enable high temperature testing/operations. Both load and temperature were computer controlled, following instructions programmed.
- a male/female axially loaded die assembly was constructed and used to attempt making articulated pyramidal impressions in pieces of the each of the ribbon types using various process parameters. -
- Si 8 amo ⁇ hous metal alloy is 470°C, as determined by differential scanning calorimetry. Process temperatures between 325°C and 500°C were investigated. Process loads ranged from 2.22 to 6.67 kN, while process times were varied between 15 and 60 seconds. Process temperature was found to be the single most important variable in terms of enabling 3-D geometric feature formation at all. Process force was demonstrated to be the second most important variable, functioning primarily to define details of 3-D geometric feature articulation. It was found that process time is not an important variable for the range of process variables used. The onset of 3-D geometric feature articulation occurs at higher temperature/force/time for thicker ribbon than for thinner ribbon.
- this onset occurred when exceeding 400°C, 3.56 kN, 15 seconds for the 40 ⁇ m thick ribbon in comparison with having to exceed 400°C, 6.67 kN, 15 seconds for the 90 ⁇ m thick ribbon. Noticeable ribbon brittleness and warping were observed when processing at 500°C, even though 3-D geometric feature articulation was very good.
- EXAMPLE 2 A 15 cm length of 40 ⁇ m thick Ni 68 Cr 7 Fe 3 Bi 4 Si 8 amo ⁇ hous metal alloy strip was compressed using 1.78 kN force for 30 seconds in a die situated in an oven at 325°C. The resultant 3-D geometric pattern was ill-defined and, in fact, barely visible.
- EXAMPLE 3 A 15 cm length of 40 ⁇ m thick Ni 68 Cr 7 Fe 3 B ⁇ 4 Si 8 amo ⁇ hous metal alloy strip was compressed using 3.56 kN force for 60 seconds in a die situated in an oven at 400°C. The resultant 3-D geometric pattern was very well articulated in every detail of the die.
- EXAMPLE 4 A 15 cm length of 90 ⁇ m thick Ni 68 Cr 7 Fe 3 B ⁇ 4 Si 8 amo ⁇ hous metal alloy strip was compressed using 3.56 kN force for 60 seconds in a die situated in an oven at 375°C. The resultant 3-D geometric pattern was not well defined.
- EXAMPLE 5 A 15 cm length of 90 ⁇ m thick Ni 68 Cr 7 Fe B ⁇ Si 8 amorphous metal alloy strip was compressed using 6.67 kN force for 15 seconds in a die situated in an oven at 425°C. The resultant 3-D geometric pattern was very well articulated in every detail of the die.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003507325A JP2004536221A (en) | 2001-06-25 | 2002-06-25 | Geometrically clearly expressed amorphous metal alloys, methods for their production and articles formed therefrom |
EP02756295A EP1534872A1 (en) | 2001-06-25 | 2002-06-25 | Geometrically articulated amorphous metal alloys, processes for their production and articles formed therefrom |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/891,033 US20020195178A1 (en) | 2001-06-25 | 2001-06-25 | Geometrically articulated amorphous metal alloys, processes for their production and articles formed therefrom |
US09/891,033 | 2001-06-25 |
Publications (1)
Publication Number | Publication Date |
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WO2003000945A1 true WO2003000945A1 (en) | 2003-01-03 |
Family
ID=25397514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2002/020075 WO2003000945A1 (en) | 2001-06-25 | 2002-06-25 | Geometrically articulated amorphous metal alloys, processes for their production and articles formed therefrom |
Country Status (4)
Country | Link |
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US (1) | US20020195178A1 (en) |
EP (1) | EP1534872A1 (en) |
JP (1) | JP2004536221A (en) |
WO (1) | WO2003000945A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112007002939B4 (en) | 2006-12-04 | 2024-04-25 | Alps Alpine Co., Ltd. | Amorphous alloy composition |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4849545B2 (en) * | 2006-02-02 | 2012-01-11 | Necトーキン株式会社 | Amorphous soft magnetic alloy, amorphous soft magnetic alloy member, amorphous soft magnetic alloy ribbon, amorphous soft magnetic alloy powder, and magnetic core and inductance component using the same |
US7869307B2 (en) * | 2008-01-25 | 2011-01-11 | Olympus Medical Systems Corp. | Ultrasonic transmission member |
EP2174731A1 (en) * | 2008-04-22 | 2010-04-14 | Aic S.A. | Method for forming amorphous foil |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871836A (en) * | 1972-12-20 | 1975-03-18 | Allied Chem | Cutting blades made of or coated with an amorphous metal |
US3940293A (en) * | 1972-12-20 | 1976-02-24 | Allied Chemical Corporation | Method of producing amorphous cutting blades |
WO1999066624A1 (en) * | 1998-06-18 | 1999-12-23 | Alliedsignal Inc. | Amorphous metal stator for a radial-flux electric motor |
WO2000028640A2 (en) * | 1998-11-06 | 2000-05-18 | Honeywell Inc. | Bulk amorphous metal magnetic components for electric motors |
-
2001
- 2001-06-25 US US09/891,033 patent/US20020195178A1/en not_active Abandoned
-
2002
- 2002-06-25 WO PCT/US2002/020075 patent/WO2003000945A1/en not_active Application Discontinuation
- 2002-06-25 EP EP02756295A patent/EP1534872A1/en not_active Withdrawn
- 2002-06-25 JP JP2003507325A patent/JP2004536221A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871836A (en) * | 1972-12-20 | 1975-03-18 | Allied Chem | Cutting blades made of or coated with an amorphous metal |
US3940293A (en) * | 1972-12-20 | 1976-02-24 | Allied Chemical Corporation | Method of producing amorphous cutting blades |
WO1999066624A1 (en) * | 1998-06-18 | 1999-12-23 | Alliedsignal Inc. | Amorphous metal stator for a radial-flux electric motor |
WO2000028640A2 (en) * | 1998-11-06 | 2000-05-18 | Honeywell Inc. | Bulk amorphous metal magnetic components for electric motors |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112007002939B4 (en) | 2006-12-04 | 2024-04-25 | Alps Alpine Co., Ltd. | Amorphous alloy composition |
Also Published As
Publication number | Publication date |
---|---|
US20020195178A1 (en) | 2002-12-26 |
EP1534872A1 (en) | 2005-06-01 |
JP2004536221A (en) | 2004-12-02 |
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