Results 51 to 60 of about 10,228 (247)

Effect of Al, Ti, Nb and Mo Content on γ′and η Precipitated Phase in a New Ni-25Cr-20Co Nickel Base Superalloy

Teshugang, 2013
The possible equilibrium precipitated phases in a new Ni-25Cr-20Co nickel base superalloy (/% ： 0.03C, 25Cr, 20Co, 0.50Mo, 1.38Al, 1.38Ti, 1.50Nb, others Ni) are analyzed by software Thermo-Cale to get the equilibrium condition diagram of the superalloy ...
郝文慧, 武敏, 罗刚, 王珏, 谢锡善   +4 more
doaj  

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

The influence of γ′ morphology and size on stress rupture properties in Ni-base superalloy IN738LC

Journal of Materials Research and Technology
This study investigates the influence of γ′ precipitate morphology and size on the creep deformation of the cast superalloy IN738LC under conditions of 760–982 °C and 78–674 MPa. Two microstructures were obtained by different heat treatments.
Byung-Hoon Kim, Byeong-Ook Kong, Yun-Kon Joo, In-Su Son, Hyun-Uk Hong, Je-Hyun Lee   +5 more
doaj   +1 more source

Effect of Substrate Roughness on Oxidation Resistance of an Aluminized Ni-Base Superalloy

Metals, 2019
In the present work, it is shown that the surface preparation method used on two Ni-based superalloys prior to aluminizing chemical vapor deposition (CVD) is one of the most important factors determining the oxidation resistance of aluminized Ni-based ...
Wojciech J. Nowak, Kamil Ochał, Patrycja Wierzba, Kamil Gancarczyk, Bartek Wierzba   +4 more
doaj   +1 more source

Investigation of Shear Strength and Microstructure Formation of Joined Ni Superalloys Using Ni Nanopastes

Nanomaterials, 2022
By using Ni nanoparticles, the bonding of Ni base superalloys can be achieved with shear strengths well above 200 MPa in a joining process at comparatively low temperatures between 675 °C and 975 °C.
Benjamin Sattler, Susann Hausner, Guntram Wagner   +2 more
doaj   +1 more source

Directionally solidified eutectic gamma-gamma nickel-base superalloys [PDF]

, 1977
A directionally solidified multivariant eutectic gamma-gamma prime nickel-base superalloy casting having improved high temperature properties was developed.
Jackson, M. R.
core   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Fatigue fracture mechanism of Ni-base superalloy GH4065A at elevated temperatures

Cailiao gongcheng
GH4065A is a newly developed high-performance cast-wrought Ni-base superalloy with ultra-low C and N content used for advanced turbine engine disc. In this study， the alloy’s inclusions of the alloy are characterized and statistically analyzed.
LI Linhan, ZHANG Ji, ZHANG Wenyun, TIAN Qiang, QIN Heyong, ZHANG Beijiang   +5 more
doaj   +1 more source

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Bernd-Arno Behrens   +4 more
wiley   +1 more source

Linear friction welding of AD730™ Ni-base superalloy: Process-microstructure-property interactions

Materials & Design, 2019
Linear friction welding (LFW) is a near net shape solid state joining technology for aerospace applications. In this study LFW of a recently introduced Ni-based superalloy, AD730™, with superior properties for use in the hot section of gas turbines was ...
F. Masoumi, D. Shahriari, H. Monajati, J. Cormier, B.C.D. Flipo, A. Devaux, M. Jahazi   +6 more
doaj   +1 more source