Results 21 to 30 of about 225,646 (268)

Ni–W diffusion barrier: Its influence on the oxidation behaviour of a β-(Ni,Pt)Al coated fourth generation nickel-base superalloy [PDF]

open access: yes, 2009
A Ni–W base diffusion barrier (DB) has been developed to limit interdiffusion between a fourth generation Ni-base superalloy (MCNG) and a Pt-modified nickel aluminide bondcoat. After long term oxidation, the DB layer permits to reduce the Al depletion in
Bacos, Marie-Pierre   +5 more
core   +2 more sources

Kinetics of Grain Growth in 718 Ni-Base Superalloy

open access: yesArchives of Metallurgy and Materials, 2014
The Haynes® 718 Ni-base superalloy has been investigated by use of modern material characterization, metallographic and heat treatment equipment. Grain growth annealing experiments at temperatures in the range of 1050 – 1200 oC (1323–1473K) for time ...
Huda Z.   +4 more
doaj   +1 more source

Machine learning-assisted determination of material chemical compositions: a study case on Ni-base superalloy

open access: yesScience and Technology of Advanced Materials: Methods, 2023
The determination of chemical compositions of materials plays a paramount role in materials design and discovery. Optimization of such compositions can be a very expensive trial-and-error task, specially when the desired properties are very sensitive to ...
Sae Dieb   +3 more
doaj   +1 more source

Microstructural stability and lattice misfit characterization of nimonic 263 [PDF]

open access: yes, 2012
Nimonic 263 has been selected as a candidate header/piping material of advanced ultra-supercritical (A-USC) boilers for the next generation of fossil fuel power plant.
Barnard, Pete   +3 more
core   +1 more source

Slip analysis in a Ni-base superalloy [PDF]

open access: yesActa Materialia, 2005
A Ni-base superalloy single crystal with Gamma/Gamma' structure was tested at room temperature along the , and directions. Consistent with previously reported investigations, this alloy did not obey the Schmid law and the CRSS (critical resolved shear stress) was noticeably lower for the -oriented samples.
Materials Science and Engineering Department, University of Florida, P.O. Box 116400, Gainesville, FL 32611, USA ( host institution )   +3 more
openaire   +2 more sources

Role of tangential force coefficient on fretting fatigue life estimation of a single crystal Ni-base superalloy

open access: yesMechanical Engineering Journal, 2017
Fretting fatigue behavior of Ni-base superalloys used in gas turbine blades and disk assemblies have been investigated under ambient and high temperature conditions. A major emphasis was placed on the influence of experimentally measured tangential force
Balavenkatesh RENGARAJ   +2 more
doaj   +1 more source

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

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

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

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