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Proceedings Papers

Influence of Carbon on Structure and Stress-Rupture Properties of LW4280W and LW4280LCT High Gamma Prime Nickel Based Superalloys for a Tip Repair of Turbine Blades

Alexandre B. Gontcharov, Paul Lowden, Ashutosh Jena, Mathieu Brochu
Proc. ASME. GT2024, Volume 9: Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications; Steam Turbine, V009T17A005, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122143
https://doi.org/10.1115/GT2024-122143
View Paper titled, Influence of Carbon on Structure and Stress-Rupture Properties of LW4280W and LW4280LCT High Gamma Prime Nickel Based Superalloys for a Tip Repair of Turbine Blades
Open the PDF for Influence of Carbon on Structure and Stress-Rupture Properties of LW4280W and LW4280LCT High Gamma Prime Nickel Based Superalloys for a Tip Repair of Turbine Blades in another window
Topics: Carbon, Gas tungsten arc welding, Heat treating (Metalworking), Maintenance, Nickel, Rupture, Stress, Superalloys, Turbine blades
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

Microstructure and Mechanical Properties of NGB Joints Formed With B/Si Free Braze Alloys

Xiao Huang, Paul Lowden, Alex Gontcharov, Robyn Reis
Proc. ASME. GT2023, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V008T17A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100896
https://doi.org/10.1115/GT2023-100896
View Paper titled, Microstructure and Mechanical Properties of NGB Joints Formed With B/Si Free Braze Alloys
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Topics: Alloys, Brazing, Maintenance, Mechanical properties
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
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Topics: Additive manufacturing, Blades, Crystals, Laser welding, Maintenance, Oxidation, Welding
Proceedings Papers

Computed Tomography Wall Thickness Inspection to Support Gas Turbine Blade Life Extension

Scott Hastie, Anthony Chan, Kevin Wiens, Doug Nagy, Robert Tollett, Paul Lowden
Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T17A021, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60316
https://doi.org/10.1115/GT2021-60316
View Paper titled, Computed Tomography Wall Thickness Inspection to Support Gas Turbine Blade Life Extension
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Topics: Blades, Computerized tomography, Gas turbines, Inspection, Life extension, Wall thickness
Proceedings Papers

Weldability and Properties of Newly Developed LW4280 High Gamma Prime Nickel Based Superalloy for 3D AM and Repair of Turbine Engine Components

Alexandre B. Gontcharov, Paul Lowden, Ashutosh Jena, Sunyong Kwon, Mathieu Brochu
Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T17A005, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58851
https://doi.org/10.1115/GT2021-58851
View Paper titled, Weldability and Properties of Newly Developed LW4280 High Gamma Prime Nickel Based Superalloy for 3D AM and Repair of Turbine Engine Components
Open the PDF for Weldability and Properties of Newly Developed LW4280 High Gamma Prime Nickel Based Superalloy for 3D AM and Repair of Turbine Engine Components in another window
Topics: Gas turbines, Maintenance, Manufacturing, Nickel, Oxidation, Superalloys, Elongation, Precipitation, Temperature, 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
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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
Proceedings Papers

Practical Experience With the Development of Superalloy Rejuvenation

Joseph Liburdi, Paul Lowden, Douglas Nagy, Tiberius Rusan De Priamus, Stephanie Shaw
Proc. ASME. GT2009, Volume 4: Cycle Innovations; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine, 819-827, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59444
https://doi.org/10.1115/GT2009-59444
View Paper titled, Practical Experience With the Development of Superalloy Rejuvenation
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Topics: Superalloys, Stress, Rupture, Creep, Turbine components, Alloys, Crystals, Gas turbines, High temperature, Materials degradation
Proceedings Papers

Prediction of Gas Turbine Blade Life: An Interdisciplinary Engineering Approach for Condition-Based Maintenance

Huitang Jin, Robert Pistor, Paul Lowden, Ben Weber, Ryan Grant
Proc. ASME. GT2006, Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B, 519-524, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90037
https://doi.org/10.1115/GT2006-90037
View Paper titled, Prediction of Gas Turbine Blade Life: An Interdisciplinary Engineering Approach for Condition-Based Maintenance
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Topics: Blades, Gas turbines, Maintenance