Results 21 to 30 of about 617,177 (261)

The effect of thermal cycling on the high-temperature creep behaviour of a single crystal nickel-based superalloy [PDF]

, 2007
Isothermal and thermal cycling creep behaviours of a single crystal nickel-based superalloy have been studied by means of tensile tests at 1150 °C and 80 MPa.
Andrieu, Eric, Crabos, Fabrice, Monceau, Daniel, Raffaitin, Aymeric   +3 more
core   +2 more sources

A Review of Laser Peening Methods for Single Crystal Ni-Based Superalloys

Metals, 2022
Single crystal Ni-based superalloys are often used to create gas turbine engine blades for their high strength under intense thermo-mechanical loading.
Noah Holtham, Keivan Davami
doaj   +1 more source

Rafting‐Enabled Recovery Avoids Recrystallization in 3D‐Printing‐Repaired Single‐Crystal Superalloys

Advances in Materials, 2020
The repair of damaged Ni‐based superalloy single‐crystal turbine blades has been a long‐standing challenge. Additive manufacturing by an electron beam is promising to this end, but there is a formidable obstacle: either the residual stress and γ/γ ...
Kai Chen, Run-qiu Huang, Yao Li, Sicong Lin, Wenxin Zhu, N. Tamura, Ju Li, Z. Shan, E. Ma   +8 more
semanticscholar   +1 more source

Quantification of Solid Solution Strengthening and Internal Stresses through Creep Testing of Ni-Containing Single Crystals at 980 °C

Metals, 2021
Various alloy compositions were cast as single crystals in a Bridgman vacuum induction furnace and creep tested at 980 °C: pure Ni, the equiatomic alloys CoCrNi and CrMnFeCoNi (Cantor alloy), single-phase fcc (Ni) solid solution alloys (with the ...
Uwe Glatzel, Felix Schleifer, Christian Gadelmeier, Fabian Krieg, Moritz Müller, Mike Mosbacher, Rainer Völkl   +6 more
doaj   +1 more source

Femtosecond laser micromachining of a single-crystal superalloy

Scripta Materialia, 2004
Investigations on femtosecond laser micromachining of single crystal superalloys with and without plasma-sprayed thermal barrier coatings were conducted under laser fluences ranging from 0.1 J/cm 2 up to 160 J/cm 2 . Micromachining was carried out in air using a titanium:sapphire laser system (O = 780 nm) operating at a repetition rate of 1 kHz and ...
Q. Feng, Y.N. Picard, H. Liu, S.M. Yalisove, G. Mourou, T.M. Pollock   +5 more
openaire   +1 more source

Optimizing Scale Adhesion on Single Crystal Superalloys [PDF]

Materials Science Forum, 2001
To improve scale adhesion, single crystal superalloys have been desulfurized to levels below 1 ppmw by hydrogen annealing. A transition to fully adherent behavior has been shown to occur at a sulfur level of about 0.2 ppmw, as demonstrated for PWA 1480, PWA 1484, and Rene N5 single crystal superalloys in 1100-1150 C cyclic oxidation tests up to 2000 h.
James L. Smialek, Bruce A. Pint
openaire   +1 more source

Analysis of crystallographic orientation influence on thermal fatigue with delay of the single-crystal corset sample by means of thermo-elasto-visco-plastic finite-element modeling

MATEC Web of Conferences, 2018
The influence of a delay time at the maximum temperature on the number of cycles before the macrocrack initiation for two thermal loading programs was investigated for single-crystal nickel-based superalloy VZhM4.
Savikovskii Artem, Semenov Artem, Getsov Leonid   +2 more
doaj   +1 more source

Advances in intelligent design of single crystal superalloys and protective coatings

Journal of Aeronautical Materials
As the turbine inlet temperatures of aero engines continue to rise， there is an urgent need to develop a new generation of single-crystal superalloys and their thermal protective coatings for turbine blades.
XING Yifeng, YIN Aobo, GENG Lilun, YANG Fan, RU Yi, ZHAO Wenyue, PEI Yanling, LI Shusuo, GONG Shengkai   +8 more
doaj   +1 more source

Morphology Dependent Flow Stress in Nickel-Based Superalloys in the Multi-Scale Crystal Plasticity Framework

Crystals, 2017
This paper develops a framework to obtain the flow stress of nickel-based superalloys as a function of γ-γ’ morphology. The yield strength is a major factor in the design of these alloys.
Shahriyar Keshavarz, Zara Molaeinia, Andrew Reid, Stephen Langer   +3 more
doaj   +1 more source

Hydrogen embrittlement prompt fracture in Ni-based single crystal superalloy

Journal of Materials Research and Technology, 2023
Hydrogen-fueled and hydrogen-hybridized aircraft engines are a new trend in the aviation industry for environmental reasons. Single crystalline Ni-based superalloys are the most commonly used engine materials and their hydrogen embrittlement properties ...
Guangxian Lu, Yunsong Zhao, Junbo Zhao, Yanhui Chen, Haibo Long, Xianghui Li, Dingzhong Tang, Zhixun Wen, Xiaodong Han   +8 more
doaj   +1 more source