Results 31 to 40 of about 225,646 (268)

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

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

Effect of Surface Roughness on Early Stage Oxidation Behavior of Ni-Base Superalloy IN 625 [PDF]

open access: yesApplied System Innovation, 2018
In the present work the effect of surface roughness on oxidation behavior during the early stages of high temperature exposure of Ni-base superalloy IN 625 is described.
W. Nowak
semanticscholar   +1 more source

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

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

Effect of Rejuvenation Heat Treatment on the Creep Property and Microstructural Evolution of a Ni-Base Superalloy

open access: yesApplied Sciences, 2020
Interrupted creep tests were performed on a polycrystalline Ni-base superalloy, and rejuvenation heat treatment (RHT) was carried out to restore the creep resistance.
Linning Wang, Yuan Liu, Jingjing Liang
doaj   +1 more source

Deformation behavior of a new Ni-Co base superalloy GH4251 during hot compression

open access: yesMaterials Research Express, 2023
The deformation behavior of a new Ni-Co base superalloy GH4251 under hot compression tests within the deformation strain window of 0.36 to 1.2 was investigated in the temperature range of 1050 ∼ 1170 °C and strain rate range of 0.001 ∼ 1 s ^−1 . Based on
Hongyao Yu   +6 more
doaj   +1 more source

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

Recent Advancements in the Field of Ni‐Based Superalloys [PDF]

open access: yesAdvances in Materials Science and Engineering, 2021
In this review article, research papers related to recent developments in Ni‐superalloy technologies have been reviewed in order to provide an insight into recent achievements and the potential for further study, research, and development in this field.
Senthil Kumaran Selvaraj   +6 more
openaire   +2 more sources

Degradation of Creep Resistant Ni - Alloy During Aging at Elevated Temperature Part II: Structure Investigations

open access: yesArchives of Foundry Engineering, 2015
The results of structure observations of Ni base superalloy subjected to long-term influence of high pressure hydrogen atmosphere at 750K and 850K are presented.
Kaczorowski M.   +2 more
doaj   +1 more source

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