Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Alex Bridges"'
Publikováno v:
Materials & Design, Vol 222, Iss , Pp 111102- (2022)
Condition assessment of welded steam components is a crucial activity for safe power plant operations. In this work, remaining lifetime of a 141,000-hour service-aged large bore girth weld between an SA-182 forged 91 (F91) reducer and an SA-335 pipe
Externí odkaz:
https://doaj.org/article/705d6e9719274040a2aa1b8e4ca19423
Publikováno v:
Journal of Materials Engineering and Performance.
A study was conducted on INCONEL® alloy 740H® to examine the role of grain size and sheet thickness on the alloy’s creep-rupture behavior. Three different starting sheet thicknesses were utilized and multiple heat-treatment conditions anticipated
Metallurgical Characterization of a 114,000-Hour Service-Aged Forge 91-Pipe 91 Steel Header Weldment
Publikováno v:
Volume 4B: Materials and Fabrication.
In this work, multi-scale metallurgical characterizations with advanced microscopy techniques were conducted on an ex-service girth weld between a SA-182 forge 91 (F91) steel reducer to a SA335 pipe 91 (P91) steel header after 141,000 hours (16 years
Publikováno v:
Materials at High Temperatures. 38:247-251
The high-temperature steel grade 91 is intended to operate in service with a fully martensitic microstructure, achieved by a well-defined heat treatment. Unfortunately, lack of control, either duri...
Autor:
John Shingledecker, John (Jack) deBarbadillo, Ronnie Gollihue, Eeva Griscom, Dan Purdy, Alex Bridges
Publikováno v:
International Journal of Pressure Vessels and Piping. 202:104875
Publikováno v:
Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications.
Recrystallization of equiaxed, directionally solidified and single crystal cast nickel base superalloys can occur during some of the manufacturing and repair processes. While equiaxed, and to a lesser extent, directionally solidified cast nickel-base
Autor:
Alex Bridges, John Shingledecker, Eeva Griscom, Hans van Esch, Stijn Pietersen, Robert Zuber, Wayne Greaves
Publikováno v:
Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications.
Single crystal (SX) nickel-base superalloys have been extensively used for the highest temperature gas turbines blades. In power generation turbines, these alloys are often exposed to high temperatures and stresses for extended periods of time and mi
Publikováno v:
Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications.
Nickel-base superalloys containing 30 to 50% gamma prime (γ′) volume fraction are typically used in hot section components (e.g. guide vanes or blades) for power generating gas turbines, and suitable time dependent properties are required for long
Publikováno v:
Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications.
Previous studies performed by TEServices, Sulzer and EPRI showed that GTD111 DS metallurgical and mechanical [stress rupture (SR) and low cycle fatigue (LCF)] properties can be restored close to new with and without hot isostatic pressing (HIP) follo