Glassimetal Technology Inc.

Apple Inc.

California Institute of Technology

Glassimental Technology, Inc.

Glenn Garrett

William L Johnson

Marios D Demetriou

Jong Hyun Na

Michael Floyd

Maximilien E Launey

Danielle Duggins

Kyung-Hee Han

Chase Crewdson

David S Lee

Georg Kaltenboeck

Oscar Abarca

Maximilien Launey

Nickel based alloys capable of forming bulk metallic glass are provided. The alloys include Ni&#x2014;Cr&#x2014;Si&#x2014;B compositions, with additions of P and Mo, and are capable of forming a metallic glass rod having a diameter of at least 1 mm. In one example of the present disclosure, the Ni&#x2014;Cr&#x2014;Mo&#x2014;Si&#x2014;B&#x2014;P composition includes about 4.5 to 5 atomic percent of Cr, about 0.5 to 1 atomic percent of Mo, about 5.75 atomic percent of Si, about 11.75 atomic percent of B, about 5 atomic percent of P, and the balance is Ni, and wherein the critical metallic glass rod diameter is between 2.5 and 3 mm and the notch toughness between 55 and 65 MPa m.

Bulk nickel-silicon-boron glasses bearing chromium

The disclosure provides Zr&#x2014;Ti&#x2014;Cu&#x2014;Ni&#x2014;Al metallic glass-forming alloys and metallic glasses that have a high glass forming ability along with a high thermal stability of the supercooled liquid against crystallization.

Zirconium-titanium-copper-nickel-aluminum glasses with high glass forming ability and high thermal stability

The present disclosure provides Au-based alloys comprising Si capable of forming metallic glass matrix composites, and metallic glass matrix composites formed thereof. The Au-based metallic glass matrix composites according to the present disclosure comprise a primary-Au crystalline phase and a metallic glass phase and are free of any other phase. In certain embodiments, the metallic glass matrix composites according to the present disclosure satisfy the 18-Karat Gold Alloy Hallmark.

Gold-based metallic glass matrix composites

The disclosure is directed to Zr&#x2014;Co&#x2014;Ni&#x2014;Al alloys that optionally comprise Ti and are capable of forming metallic glasses having a combination of high glass forming ability and high reflectivity. Compositional regions in the Zr&#x2014;Co&#x2014;Ni&#x2014;Al and Zr&#x2014;Ti&#x2014;Co&#x2014;Ni&#x2014;Al alloys are disclosed where the metallic glass-forming alloys demonstrate a high glass forming ability while the metallic glasses formed from the alloys exhibit a high reflectivity. The metallic glass-forming alloys demonstrate a critical plate thickness of at least 2 mm, while the metallic glasses formed from the alloys demonstrate a CIELAB L* value of at least 78.

Zirconium-cobalt-nickel-aluminum glasses with high glass forming ability and high reflectivity

Golf clubs formed from bulk-solidifying amorphous metals (i.e., metallic glasses) having high elastic modulus and fracture toughness, and to methods of forming the same are provided. Among other components, the golf club materials disclosed enable fabrication of flexural membranes or shells used in golf club heads (drivers, fairways, hybrids, irons, wedges and putters) exhibiting enhanced flexural or bending compliance together with the ability to deform plastically and avoid brittle fracture or catastrophic failure when overloaded under bending loads. Further, the high strength of the material and its density, comparable to that of steel, enables the redistribution of mass in the golf club while maintaining a desired overall target mass.

Golf club fabricated from bulk metallic glasses with high toughness and high stiffness

The disclosure provides Pt&#x2014;Cu&#x2014;P glass-forming alloys bearing at least one of B, Ag, and Au, where each of B, Ag, and Au can contribute to improve the glass forming ability of the alloy in relation to the alloy that is free of these elements. The alloys are capable of forming metallic glass rods with diameters in excess of 3 mm, and in some embodiments 50 mm or larger. The alloys and metallic glasses can satisfy platinum jewelry hallmarks PT750, PT800, PT850, and PT900.

Bulk platinum-copper-phosphorus glasses bearing boron, silver, and gold

Ni-based Cr- and P-bearing alloys that can from centimeter-thick amorphous articles are provided. Within the family of alloys, millimeter-thick bulk-glassy articles can undergo macroscopic plastic bending under load without fracturing catastrophically.

Bulk nickel-based chromium and phosphorous bearing metallic glasses

The disclosure is directed to Ni&#x2014;Cr&#x2014;P eutectic alloys bearing Nb as substitution for Cr that are capable of forming metallic glasses with critical rod diameter of at least 1 mm or more. With further minority addition of Si as replacement for P, such alloys are capable of forming metallic glasses with critical rod diameters as high as 10 mm or more. Specifically, Ni-based compositions with a Cr content of between 5 and 14 atomic percent, Nb content of between 3 and 4 atomic percent, P content of between 17.5 and 19 atomic percent, and Si content of between 1 and 2 atomic percent, were capable of forming bulk metallic glass rods with diameters as large as 6 mm or larger.

Bulk nickel-based glasses bearing chromium, niobium, phosphorus and silicon

A Ni-based bulk metallic glass forming alloy is provided. The alloy includes NiCrNbPB, where an atomic percent of chromium (Cr) a ranges from 3 to 13, an atomic percent of niobium (Nb) b is determined by x&#x2212;y*a, where x ranges from 3.8 to 4.2 and y ranges from 0.11 to 0.14, an atomic percent of phosphorus (P) c ranges from 16.25 to 17, an atomic percent of boron (B) d ranges from 2.75 to 3.5, and the balance is nickel (Ni), and where the alloy is capable of forming a metallic glass object having a lateral dimension of at least 6 mm, where the metallic glass has a stress intensity factor at crack initiation when measured on a 3 mm diameter rod containing a notch with length between 1 and 2 mm and root radius between 0.1 and 0.15 mm, the stress intensity factor being at least 70 MPa m.

Bulk nickel-based chromium and phosphorus bearing metallic glasses with high toughness

The present disclosure is directed to Ni&#x2014;P&#x2014;B alloys and glasses containing small fractions of Nb and Ta and optionally Mn. Over a specific range, the alloys are capable of forming bulk metallic glasses having critical casting thickness in excess of 1 mm. In one embodiment, compositions with a Mn content of between 3 and 4 atomic percent, Nb content of about 3 atomic percent, B content of about 3 atomic percent, and P content of about 16.5 atomic percent, where the balance in Ni, were capable of forming bulk metallic glass rods with diameters as large as 5 mm or larger. In another embodiment, Ni-based compositions with a Mn content of between 5 and 7 atomic percent, Ta content of between 1 and 2 atomic percent, B content of about 3 atomic percent, and P content of about 16.5 atomic percent, where the balance in Ni, were capable of forming bulk metallic glass rods with diameters as large as 5 mm or larger.

Bulk nickel-phosphorus-boron glasses bearing manganese, niobium and tantalum

The disclosure is directed to Ni&#x2014;P&#x2014;B alloys bearing Mn and optionally Cr and Mo that are capable of forming a metallic glass, and more particularly metallic glass rods with diameters at least 1 mm and as large as 5 mm or larger. The disclosure is further directed to Ni&#x2014;Mn&#x2014;Cr&#x2014;Mo&#x2014;P&#x2014;B alloys capable of demonstrating a good combination of glass forming ability, strength, toughness, bending ductility, and corrosion resistance.

Bulk nickel-phosphorus-boron glasses bearing manganese

The present disclosure provides specified ranges in the Fe&#x2014;Mo&#x2014;Ni&#x2014;Cr&#x2014;P&#x2014;C&#x2014;B alloys such that the alloys are capable of forming bulk glasses having unexpectedly high glass-forming ability. The critical rod diameter of the disclosed alloys is at least 10 mm.

Bulk glass steel with high glass forming ability

A bulk-glass forming Ni&#x2014;Cr&#x2014;Nb&#x2014;P&#x2014;B alloy is provided. The alloy includes NiCrTaPB, where the atomic percent a is between 3 and 11, the atomic percent b is between 1.75 and 4, the atomic percent c is between 14 and 17.5, and the atomic percent d is between 2.5 and 5. The alloy is capable of forming a metallic glass having a lateral dimension of at least 3 mm.

Bulk nickel-phosphorus-boron glasses bearing chromium and tantalum

Ni&#x2014;Fe&#x2014;Si&#x2014;B and Ni&#x2014;Fe&#x2014;Si&#x2014;B&#x2014;P metallic glass forming alloys and metallic glasses are provided. Metallic glass rods with diameters of at least one, up to three millimeters, or more can be formed from the disclosed alloys. The disclosed metallic glasses demonstrate high yield strength combined with high corrosion resistance, while for a relatively high Fe contents the metallic glasses are ferromagnetic.

Bulk nickel&#x2014;silicon&#x2014;boron glasses bearing iron

An alloy comprising Fe, Ni, P, B and Ge is disclosed, having a composition according to the formula [FeNi]PBGe, where a, b, c subscripts denote atomic percent; y subscript denotes atomic fraction, a is between 9 and 12, b is between 5.5 and 7.5, c is between 2 and 6, and y is between 0.45 and 0.55. Metallic glass rods with diameter of at least 1 mm can be formed from the alloy by rapid quenching from the molten state.

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Pasadena, CA, United States of America

Glenn Garrett