STANLEY ABKOWITZ
Engineering in Lexington, MA
License number
Massachusetts 21240
Issued Date
Apr 28, 1967
Expiration Date
Jun 30, 1990
Type
Metallurgical Engineer
Address
Address
Lexington, MA 02421
Professional information
Low Cost Feedstock For Titanium Casting, Extrusion And Forging
US Patent:
6635098, Oct 21, 2003
Filed:
Feb 12, 2002
Appl. No.:
10/072875
Inventors:
Stanley Abkowitz - Lexington MA
Susan M. Abkowitz - Winchester MA
Harold L. Heussi - Essex MA
Kevin M. McCarthy - Billerica MA
Susan M. Abkowitz - Winchester MA
Harold L. Heussi - Essex MA
Kevin M. McCarthy - Billerica MA
Assignee:
Dynamet Technology, Inc. - Burlington MA
International Classification:
B22F 315
US Classification:
75245, 75235, 75236, 75244, 419 12, 419 13, 419 14, 419 19, 419 28, 419 42, 419 48
Abstract:
A low cost titanium, titanium alloy material, or Ti matrix composite comprising clean and divided titanium turnings that are blended with titanium, titanium alloy powder, and/or ceramic powder and consolidated is provided. A method of making the material is also provided. The low cost material is formed into preshapes, such as a billet, which is subsequently used as feedstock for extrusion, forging, casting, or rolling.
Titanium Carbide/Titanium Alloy Composite And Process For Powder Metal Cladding
US Patent:
4731115, Mar 15, 1988
Filed:
Feb 22, 1985
Appl. No.:
6/704263
Inventors:
Stanley Abkowitz - Lexington MA
Harold L. Heussi - Essex MA
Harold P. Ludwig - Woburn MA
Harold L. Heussi - Essex MA
Harold P. Ludwig - Woburn MA
Assignee:
Dynamet Technology Inc. - Burlington MA
International Classification:
C22C 2902
US Classification:
75236
Abstract:
A microcomposite material having a matrix of a titanium-base alloy, the material further including about 10-80% by weight TiC substantially uniformly dispersed in the matrix. Several methods of cladding a macrocomposite structure including pressing quantities of a matrix material and a microcomposite material composed of the matrix material and a compatible stiffener material into layers to form a multi-layered compact and sintering the multi-layered compact to form an integral metallurgical bond between the layers of the compact with diffusion but essentially no composition gradient between the layers. A multi-layered macrocomposite article composed of an alloy layer of a matrix material and a layer of a microcomposite material composed of the matrix material and a compatible stiffener material bonded together at the interface region between the layers, the interface region being essentially free of a composition gradient.
Homogeneous Titanium Tungsten Alloys Produced By Powder Metal Technology
US Patent:
2011023, Sep 29, 2011
Filed:
Feb 22, 2011
Appl. No.:
13/032374
Inventors:
Stanley Abkowitz - Lexington MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia J. Schwartz - Andover MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia J. Schwartz - Andover MA, US
International Classification:
C22C 14/00, B22F 3/20, B22F 3/24, B22F 3/15, B22F 3/12, B22F 3/17, B22F 3/18, F01D 5/28, C23C 14/14
US Classification:
20429813, 420417, 419 28, 416241 R
Abstract:
The present disclosure is related to homogeneous alloys comprising titanium and 9% to less than 20% by weight of tungsten, wherein the alloy has a yield strength of at least 120,000 psi and ductility of least 20% elongation; and with further alloying an ultimate tensile strength of at least 200,000 psi and useful ductility of at least 2% elongation; and with the addition of ceramic particulate reinforcements can exhibit an ultimate tensile strength of at least 180,000 psi. Products and metal matrix composites comprising such homogeneous alloys are also disclosed. The metal matrix composites further comprise a discontinuous reinforcement chosen from TiC, TiB, or TiB, particles or combinations of such particles. Method of making such alloys and composites as well as products made from such alloys and composites are also disclosed.
Homogeneous Titanium Tungsten Alloys Produced By Powder Metal Technology
US Patent:
2008002, Feb 7, 2008
Filed:
Feb 13, 2007
Appl. No.:
11/705593
Inventors:
Stanley Abkowitz - Lexington MA, US
Susan Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia Schwartz - Andover MA, US
Susan Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia Schwartz - Andover MA, US
International Classification:
C22C 14/00, B22F 3/02, B22F 3/15, C22F 1/16, B22F 3/24
US Classification:
148407000, 148421000, 148671000, 419028000, 419066000
Abstract:
The present disclosure is related to homogeneous alloys comprising titanium and 9% to less than 20% by weight of tungsten, wherein the alloy has a yield strength of at least 120,000 psi and ductility of least 20% elongation; and with further alloying an ultimate tensile strength of at least 200,000 psi and useful ductility of at least 2% elongation; and with the addition of ceramic particulate reinforcements can exhibit an ultimate tensile strength of at least 180,000 psi. Products and metal matrix composites comprising such homogeneous alloys are also disclosed. The metal matrix composites further comprise a discontinuous reinforcement chosen from TiC, TiB, or TiB, particles or combinations of such particles. Method of making such alloys and composites as well as products made from such alloys and composites are also disclosed.
Titanium Diboride/Titanium Alloy Metal Matrix Microcomposite Material And Process For Powder Metal Cladding
US Patent:
4906430, Mar 6, 1990
Filed:
Jul 29, 1988
Appl. No.:
7/226207
Inventors:
Stanley Abkowitz - Lexington MA
Harold L. Heussi - Essex MA
Harold P. Ludwig - Woburn MA
David M. Rowell - Billerica MA
Stephen A. Kraus - Clinton MA
Harold L. Heussi - Essex MA
Harold P. Ludwig - Woburn MA
David M. Rowell - Billerica MA
Stephen A. Kraus - Clinton MA
Assignee:
Dynamet Technology Inc. - Burlington MA
International Classification:
B22F 700
US Classification:
419 6
Abstract:
A titanium-based metal matrix microcomposite material. About 1% to about 25% by weight TiB. sub. 2 is substantially uniformly incorporated in a titanium-based alloy matrix. The microcomposite material is formed by sintering at a temperature selected to preclude diffusion of TiB. sub. 2 into the matrix. The microcomposite material may be used in a process for cladding a macrocomposite structure.
Titanium Tungsten Alloys Produced By Additions Of Tungsten Nanopowder
US Patent:
2014007, Mar 20, 2014
Filed:
Mar 26, 2013
Appl. No.:
13/850488
Inventors:
Stanley Abkowitz - Lexington MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia J. Schwartz - Andover MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia J. Schwartz - Andover MA, US
Assignee:
Dynamet Technology, Inc. - Burlington MA
International Classification:
B22F 3/12, C22C 14/00
US Classification:
419 12, 419 32, 419 28, 419 23, 419 14, 420417, 420421
Abstract:
Disclosed herein are titanium-tungsten alloys and composites wherein the tungsten comprises 0.5% to 40% by weight of the alloy. Also disclosed is a method of making such alloys and composites using powders of tungsten less then 3 μm in size, such as 1 μm or less. Also disclosed is a method of making the titanium alloy by powder metallurgy, and products made from such alloys or billets that may be cast, forged, or extruded. These methods of production can be used to make titanium alloys comprising other slow-diffusing beta stabilizers, such as but not limited to V, Nb, Mo, and Ta.
High Extrusion Ratio Titanium Metal Matrix Composites
US Patent:
8043404, Oct 25, 2011
Filed:
Feb 17, 2006
Appl. No.:
11/356025
Inventors:
Stanley Abkowitz - Lexington MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia J. Schwartz - Andover MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Patricia J. Schwartz - Andover MA, US
Assignee:
Dynamet Technology, Inc. - Burlington MA
International Classification:
C22C 49/11, C22C 49/12, B22F 3/12, B22F 3/20
US Classification:
75245, 75236, 75244, 419 12, 419 14, 419 28, 419 38
Abstract:
Disclosed herein are extruded titanium metal matrix composites with enhanced ductility. Also disclosed is the extrusion at high extrusion ratio of titanium metal matrix composites produced by powder metal processes. The ductility and machinability of these titanium metal matrix composites extruded at high extrusion ratios combined with their wear resistance and excellent imaging characteristics makes these high extrusion ratio extruded titanium metal matrix composites useful as biological implants, including prosthetic devices. Also disclosed are articles such as orthopedic implants for knee, hip, spine or other biomedical devices, with enhanced properties, made from the disclosed extruded material.
Titanium Poppet Valve
US Patent:
4852531, Aug 1, 1989
Filed:
Mar 10, 1988
Appl. No.:
7/166503
Inventors:
Stanley Abkowitz - Lexington MA
Harold L. Heussi - Essex MA
Harold P. Ludwig - Woburn MA
Stephen A. Kraus - Clinton MA
Harold L. Heussi - Essex MA
Harold P. Ludwig - Woburn MA
Stephen A. Kraus - Clinton MA
Assignee:
Dynamet Technology Inc. - Burlington MA
International Classification:
F01L 300
US Classification:
123188AA
Abstract:
A poppet valve having a valve stem of titanium alloy strengthened by the inclusion of a compound containing titanium such as TiC, TiB or TiB. sub. 2. The valve stem is joined to a valve head formed from a powder of a titanium alloy, preferably of the same composition as the alloy of the stem. The head and the stem are joined by cold compaction followed by vacuum sintering and a high temperature compaction.
Titanium Tantalum Oxygen Alloys For Implantable Medical Devices
US Patent:
2009008, Apr 2, 2009
Filed:
Sep 24, 2008
Appl. No.:
12/237164
Inventors:
Stanley Abkowitz - Lexington MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
Susan M. Abkowitz - Burlington MA, US
Harvey Fisher - Lexington MA, US
International Classification:
A61F 2/02, C01G 23/04
US Classification:
623 1111, 423598
Abstract:
The present disclosure relates to alloys of titanium, tantalum, and oxygen that include from greater than 0 to about 60 weight % tantalum, from greater than or equal to about 0.10 weight % oxygen, and the balance titanium and other impurities. Also disclosed are methods of making such alloys. In addition, articles of manufacture including such alloys, such as biomedical implants, are disclosed.
P/M Titanium Composite Casting
US Patent:
5897830, Apr 27, 1999
Filed:
Dec 6, 1996
Appl. No.:
8/761391
Inventors:
Stanley Abkowitz - Lexington MA
Susan M. Abkowitz - Winchester MA
Paul F. Weihrauch - Newton MA
Harold L. Heussi - Essex MA
Walter Zimmer - Princeton MA
Susan M. Abkowitz - Winchester MA
Paul F. Weihrauch - Newton MA
Harold L. Heussi - Essex MA
Walter Zimmer - Princeton MA
Assignee:
Dynamet Technology - Burlington MA
International Classification:
B22F 312, B22F 314, B22F 500, C22C 1400
US Classification:
420417
Abstract:
A consumable billet for melting and casting a metal matrix composite component is made of a consolidated powder metal matrix composite having a titanium or titanium alloy matrix reinforced with particles. The preferred billet is a blended and sintered powder metal composite billet incorporating titanium carbide or titanium boride into a Ti--6Al--4V alloy.