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Alexandre Gontcharov
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Proceedings Papers

Effect of Heat Treatment on the Morphology of γ′ Precipitates in LW 4275 and LW 4280

Ashutosh Jena, Alexandre Gontcharov, Paul Lowden, Mathieu Brochu
Proc. ASME. GT2023, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V008T17A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101520
https://doi.org/10.1115/GT2023-101520
View Paper titled, Effect of Heat Treatment on the Morphology of γ′ Precipitates in LW 4275 and LW 4280
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Topics: Heat treating (Metalworking), Lasers, Superalloys
Proceedings Papers

Influence of Tantalum and Cobalt on the Weldability of New High Gamma Prime Nickel Based Superalloys for Repair and 3D AM of Turbine Engine Components

Alexandre Gontcharov, Paul Louden, Mathieu Brochu
Proc. ASME. GT2023, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V008T17A010, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102205
https://doi.org/10.1115/GT2023-102205
View Paper titled, Influence of Tantalum and Cobalt on the Weldability of New High Gamma Prime Nickel Based Superalloys for Repair and 3D AM of Turbine Engine Components
Open the PDF for Influence of Tantalum and Cobalt on the Weldability of New High Gamma Prime Nickel Based Superalloys for Repair and 3D AM of Turbine Engine Components in another window
Topics: Cobalt, Cracking (Materials), Fracture (Process), Gas tungsten arc welding, Gas turbines, Maintenance, Nickel, Stress, Superalloys, Tantalum
Proceedings Papers

Advanced Tip Repair of Single Crystal HPT Blades With LW3 and LW4280 Welding Materials

Anthony Chan, Alexandre Gontcharov, Paul Lowden, Thomas Mikolajewski, J. J. Sixsmith, Robert Tollett, Clayton Greer
Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T17A005, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80473
https://doi.org/10.1115/GT2022-80473
View Paper titled, Advanced Tip Repair of Single Crystal HPT Blades With LW3 and LW4280 Welding Materials
Open the PDF for Advanced Tip Repair of Single Crystal HPT Blades With LW3 and LW4280 Welding Materials in another window
Topics: Additive manufacturing, Blades, Crystals, Laser welding, Maintenance, Oxidation, Welding
Journal Articles

A Comparison of Weldability, Structure, and Mechanical Properties of CM64 and Tribaloy T-800 Welds for Hard-Facing of Turbine Blades

Mohsen K. Keshavarz, Alexandre Gontcharov, Paul Lowden, Mathieu Brochu
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Research Papers
J. Manuf. Sci. Eng. October 2020, 142(10): 101004.
Paper No: MANU-20-1107
https://doi.org/10.1115/1.4047142
Published Online: June 4, 2020
View Article titled, A Comparison of Weldability, Structure, and Mechanical Properties of CM64 and Tribaloy T-800 Welds for Hard-Facing of Turbine Blades
Open the PDF for A Comparison of Weldability, Structure, and Mechanical Properties of CM64 and Tribaloy T-800 Welds for Hard-Facing of Turbine Blades in another window
Topics: Hardening, Temperature, Welded joints, Welding, Alloys, Mechanical properties, Turbine blades, Fracture (Process)
Journal Articles

Mechanical Properties and Structure of Laser Beam and Wide Gap Brazed Joints Produced Using Mar M247–Amdry DF3 Powders

Alexandre Gontcharov, Yuan Tian, Paul Lowden, Mathieu Brochu
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2019, 141(4): 041031.
Paper No: GTP-18-1367
https://doi.org/10.1115/1.4041009
Published Online: December 7, 2018
View Article titled, Mechanical Properties and Structure of Laser Beam and Wide Gap Brazed Joints Produced Using Mar M247–Amdry DF3 Powders
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Topics: Brazing, Cladding systems (Building), Fillers (Materials), Laser beams, Maintenance, Mechanical properties, Precipitation, Superalloys, Temperature, Welded joints
Proceedings Papers

Advanced Welding Materials and Technologies for Repair of Turbine Engine Components Manufactured of High Gamma Prime Nickel Based Superalloys

Alexandre Gontcharov, Yuan Tian, Paul Lowden, Robert Tollett, Mathieu Brochu
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A013, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75862
https://doi.org/10.1115/GT2018-75862
View Paper titled, Advanced Welding Materials and Technologies for Repair of Turbine Engine Components Manufactured of High Gamma Prime Nickel Based Superalloys
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Topics: Gas turbines, Maintenance, Nickel, Superalloys, Welding, Alloys, Blades, Boron, Low temperature, Melting
Proceedings Papers

Mechanical Properties and Structure of Laser Beam and Wide Gap Brazed Joints Produced Using Mar M247-Amdry DF3 Powders

Alexandre Gontcharov, Yuan Tian, Paul Lowden, Mathieu Brochu
Proc. ASME. GT2018, Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T24A014, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75870
https://doi.org/10.1115/GT2018-75870
View Paper titled, Mechanical Properties and Structure of Laser Beam and Wide Gap Brazed Joints Produced Using Mar M247-Amdry DF3 Powders
Open the PDF for Mechanical Properties and Structure of Laser Beam and Wide Gap Brazed Joints Produced Using Mar M247-Amdry DF3 Powders in another window
Topics: Laser beams, Mechanical properties, Brazing, Additive manufacturing, Cladding systems (Building), Maintenance, Precipitation, Precipitation hardening, Superalloys, Welded joints
Proceedings Papers

Self Healing Fusion Welding Technology

Alexandre Gontcharov, Joe Liburdi, Paul Lowden, Douglas Nagy, Nikesh Patel
Proc. ASME. GT2014, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T22A013, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26412
https://doi.org/10.1115/GT2014-26412
View Paper titled, Self Healing Fusion Welding Technology
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Topics: Welding, Temperature, Welded joints, Fracture (Materials), Boron, Silicon, Heat treating (Metalworking), Oxidation, Solidification, Alloys