Results 21 to 30 of about 10,228 (247)

Characterization of sulfur distribution in Ni-based superalloy and thermal barrier coatings after high temperature oxidation: a SIMS analysis [PDF]

open access: yes, 2009
Sulfur segregation was characterized by secondary ion mass spectrometry (SIMS) in uncoated single-crystal Ni-based AM1 superalloys with various S contents and on NiPtAl, NiAl and NiPt bondcoats of complete TBC systems.
Cadoret, Yannick   +3 more
core   +2 more sources

Influence of Short-time Oxidation on Corrosion Properties of Directionally Solidified Superalloys with Different Orientations

open access: yesCailiao gongcheng, 2016
In order to investigate the corrosion performance on intersecting and longitudinal surfaces of unoxidized and oxidized directionally solidified superalloys, Ni-base directionally solidified superalloy DZ125 and Co-base directionally solidified superalloy
MA Luo-ning, WANG Tian-you, ZHANG Zheng
doaj   +1 more source

Effect of Pre-Post TIG Welding Heat Treatment on Cast NI Superalloy

open access: yesAnnals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology, 2020
The effect of a pre (before) and post (after) heating welding treatment on the microstructure and mechanical properties of the scrap blades made of cast INC738LC superalloy is the main goal of the present investigation. The filler used in TIG welding was
C. Saib   +4 more
doaj   +1 more source

Phases Micromechanical Properties of Ni-base Superalloy Measured by Nanoindentation

open access: yesMedžiagotyra, 2012
This investigation describes the changes in the phase’s micromechanical properties as a result of alloying elements moving at interdiffusion. The induction of the interdiffusion between different phases of a Ni-based single crystal superalloy still is a ...
Lembit KOMMEL   +5 more
doaj   +1 more source

Fracture toughness of a 9% Ni steel pipe girth welded with Ni-based superalloy 625 filler metal operating in a sour environment

open access: yesJournal of Materials Research and Technology, 2020
9% Ni steel was adopted, for the first time, to be used in the CO2 injection units in oil wells. It operates at 550 bar in sour environment (CO2 + H2S), in addition to being subject to abrupt temperature variations.
Vinícius Santiago Fernandes   +2 more
doaj   +1 more source

Atomic-scale grain boundary engineering to overcome hot-cracking in additively-manufactured superalloys [PDF]

open access: yes, 2019
There are still debates regarding the mechanisms that lead to hot cracking in parts build by additive manufacturing (AM) of non-weldable Ni-based superalloys.
Abed, Stéphane   +11 more
core   +2 more sources

Large scale 3-D phase-field simulation of coarsening in Ni-base superalloys

open access: yesMATEC Web of Conferences, 2014
In this study we present a large scale numerical simulation of γ-γ′ microstructure evolution in Ni-base superalloy using the multi-phase field method in three dimensions. We numerically simulated precipitation hardening heat treatment cycles. Large scale
Kumar Rajendran Mohan   +2 more
doaj   +1 more source

Dynamic recrystallization mechanisms and twining evolution during hot deformation of Inconel 718 [PDF]

open access: yes, 2016
The hot deformation behavior of an IN718 superalloy was studied by isothermal compression tests under the deformation temperature range of 950–1100 °C and strain rate range of 0.001–1 s-1 up to true strains of 0.05, 0.2, 0.4 and 0.7.
Aghaie-Khafri, M.   +3 more
core   +2 more sources

Advanced burner-rig test for oxidation-corrosion resistance evaluation of MCrAlY/superalloys systems [PDF]

open access: yes, 2006
Protective coatings are used on gas turbine components to enable them to survive in engine-operating conditions. This study presents a recently developed cyclic burner-rig test that is used to simulate helicopter engine conditions and to assess the ...
Andrieu, Eric   +3 more
core   +3 more sources

Substrate Effect on the High Temperature Oxidation Behavior of a Pt-modified Aluminide Coating. Part II: Long-term Cyclic-oxidation Tests at 1,050 C [PDF]

open access: yes, 2007
This second part of a two-part study is devoted to the effect of the substrate on the long-term, cyclic-oxidation behavior at 1,050 C of RT22 industrial coating deposited on three Ni-base superalloys (CMSX-4, SCB, and IN792).
B. A. Pint   +22 more
core   +3 more sources

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