Gary J Shiflet

7067020, Jun 27, 2006

Feb 11, 2003

10/364123

S. Joseph Poon - Charlottesville VA, US
Gary J. Shiflet - Charlottesville VA, US
Vijayabarathi Ponnambalam - Charlottesville VA, US

University of Virginia Patent Foundation - Charlottesville VA

C22C 45/02

148403, 420 14, 420 74

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 T(e. g. , about 0. 6 to 0.

7517415, Apr 14, 2009

May 25, 2004

10/559002

S. Joseph Poon - Charlottesville VA, US
Vijayabarathi Ponnambalam - Clemson SC, US
Gary J. Shiflet - Charlottesville VA, US

University of Virginia Patent Foundation - Charlottesville VA

C22C 45/02

148403, 148324, 148330, 148331, 420 12, 420 40

The present invention relates to novel non-ferromagnetic amorphous steel alloys represented by the general formula:Fe—Mn-(Q)-B-M,wherein Q represents one or more elements selected from the group consisting of Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and M represents one or more elements selected from the group consisting of Cr, Co, Mo, C and Si. Typically the atomic percentage of the Q constituent is 10 or less. FIG. B represents a differential thermal analysis plot for several exemplary alloys according to the invention.

7517416, Apr 14, 2009

Jun 2, 2006

11/446098

S. Joseph Poon - Charlottesville VA, US
Gary J. Shiflet - Charlottesville VA, US
Vijayabarathi Ponnambalam - Charlottesville VA, US

University of Virginia Patent Foundation - Charlottesville VA

C22C 45/02

148403, 148324, 420 10, 420 14

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 T(e. g. , about 0. 6 to 0.

7763125, Jul 27, 2010

Dec 21, 2005

11/313595

Gary J. Shiflet - Charlottesville VA, US
S. Joseph Poon - Charlottesville VA, US
Xiaofeng Gu - Wuxi, CN

University of Virginia Patent Foundation - Charlottesville VA

C22C 45/02

148403, 148324, 420 12

The present invention relates to novel non-ferromagnetic amorphous steel alloys represented by the general formula: Fe—Mn-(Q)-B-M, wherein Q represents one or more elements selected from the group consisting of Sc, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and M represents one or more elements selected from the group consisting of Cr, Co, Mo, C and Si. Typically the atomic percentage of the Q constituent is 10 or less. An aspect is to utilize these amorphous steels as coatings, rather than strictly bulk structural applications. In this fashion any structural metal alloy can be coated by various technologies by these alloys for protection from the environment. The resultant structures can utilize surface and bulk properties of the amorphous alloy.

8313588, Nov 20, 2012

Oct 30, 2009

12/609391

Luana Emiliana Iorio - Clifton Park NY, US
Francis Johnson - Clifton Park NY, US
Pazhayannur Ramanathan Subramanian - Niskayuna NY, US
Gary Shiflet - Charlottesville VA, US
Joseph Poon - Charlottesville VA, US
Sriparna Bhattacharya - Charlottesville VA, US

General Electric Company - Niskayuna NY

C22C 45/02

148304, 148403

An amorphous magnetic alloy is presented. The alloy has the general formula: (FeCo)MoPBCSi, wherein n is the atomic percent of iron and cobalt; x is the fraction of n; a, b, c, d and e are the atomic percent of molybdenum, phosphorous, boron, carbon and silicon respectively and n, x, a, b, c, d and e are defined by following relationship: 76≦n≦85; 0. 05

20070137737, Jun 21, 2007

May 27, 2004

10/559907

Faqiang Guo - Charlottesville VA, US
S. Joseph Poon - Charlottesville VA, US
Gary Shiflet - Charlottesville VA, US

C22C 45/00

148403000, 420415000

The present invention relates to novel calcium based amorphous alloys with high thermal stability and low mass density represented by the general formula: CaAlQ, wherein Q represents one or more elements selected from the group consisting of Cu, Ag, Zn and Mg. Typically, the atomic percentage of the calcium is about 50%.

20080202649, Aug 28, 2008

Jun 13, 2006

11/917242

Faqiang Guo - Crozet VA, US
S. Joseph Poon - Charlottesville VA, US
Gary J. Shiflet - Charlottesville VA, US

C22F 1/00
C22C 45/00

148561, 148 95, 148400, 148442, 148559, 148403

Composite phase structure of early transition metal-based metallic alloys, including those of crystalline, quasicrystalline and amorphous phases, can be obtained in a controllable way upon direct (in-situ) cooling (solidification) of the alloy, realized either by adjusting the alloy compositions at a fixed cooling rate or by changing the cooling rates for a given alloy composition. Some embodiments are based on the addition of later transition metals, mainly of Cu with Ni or Fe with Co in early transition metal based (mainly Ti and Zr or Hf and Nb) metallic alloys. If cooling rate is on the scale of 10 C./s, a wholly amorphous structure is obtained for most of the compositions. At reduced cooling rates, composite structures with different kinds of phases can be achieved, as illustrated graphically in FIG. . Nickel addition promotes the formation of quasicrystalline phases, especially for Ti-rich alloy compositions with beryllium. A critical percentage of Ni exists below which no quasicrystalline phases will be formed.

20090025834, Jan 29, 2009

Feb 23, 2006

11/884917

S. Joseph Poon - Charlottesville VA, US
Gary J. Shiflet - Charlottesville VA, US
Xiao-Jun Gu - Charlottesville VA, US

C22C 45/02
B22D 19/14

148403, 164 97

Amorphous steel composites with enhanced mechanical properties and related methods for toughening amorphous steel alloys. The composites are formed from monolithic amorphous steel and hard ceramic particulates, which must be embedded in the glass matrix through melting at a temperature above the melting point for the steel but below the melting point for the ceramic. The ceramics may be carbides, nitrides, borides, iron-refractory carbides, or iron-refractory borides. An optical micrograph of such a composite including niobium carbide particulates is shown in FIG. A. The produced composites may be one of two types, primarily distinguished by the methods for embedding the ceramic particulates in the steel. These methods may be applied to a variety of amorphous steels as well as other non-ferrous amorphous metals, and the resulting composites can be used in various applications and utilizations.