Advanced aircraft engine materials trends [PDF]
Recent activities of the Lewis Research Center are reviewed which are directed toward developing materials for rotating hot section components for aircraft gas turbines.
Dreshfield, R. L. +3 more
core +1 more source
Multicomponent Rare‐Earth Monosilicate Reactions With Calcium‐Magnesium Aluminosilicate
Journal of the American Ceramic Society, Volume 109, Issue 2, February 2026.ABSTRACT High‐temperature reactions of multicomponent rare‐earth monosilicates (REMS) with calcium‐magnesium aluminosilicate (CMAS) were investigated at 1300°C for 24 h. Three compositional series were tested, each ranging from 1‐cation to 4‐cation REMS, with cations selected to interrogate compositional effects on CMAS reactivity. The final members of
Cameron K. Miller, Elizabeth J. Opila
wiley +1 more source
Influence of a magnetic field during directional solidification of MAR-M 246 + Hf superalloy [PDF]
An area that has been almost totally overlooked in the optimization of properties in directionally solidified superalloys is the control of microstructural features through the application of a magnetic field during solidification.
Alter, Wendy +2 more
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The linear-elastic Theory of Critical Distances to estimate high-cycle fatigue strength of notched metallic materials at elevated temperatures [PDF]
, 2015 This paper investigates the accuracy of the linear-elastic Theory of Critical Distances (TCD) in estimating high-cycle fatigue streng th of notched metallic materials experienc- ing elevated temperatures during in-service operations.
Akiniwa +49 more
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Journal of Advanced Materials in Engineering, 2020 In this study, the effect of Ta/W ratio on the microstructure and stress rupture properties of Ni-based single crystal (SX) superalloy PWA1483 was investigated. For this purpose, single crystal (SX) superalloys with different Ta/W ratios (0.75, 1.0, 1.32
A. Borouni, A. Kermanpur
doaj
Progress in advanced high temperature materials technology [PDF]
Significant progress has recently been made in many high temperature material categories pertinent to such applications by the industrial community. These include metal matrix composites, superalloys, directionally solidified eutectics, coatings, and ...
Ault, G. M., Freche, J. C.
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Tensile Behavior of Long-term Aged Nickel-base Superalloy
High Temperature Materials and Processes, 2015 The microstructural change of directionally solidified nickel-base superalloy which was aged at 900 °C for 1500 hours and tensile behavior at different temperatures were investigated by scanning electron microscope (SEM) and transmission electron ...
Xia P. C., Chen F. W., Xie K., Yu J. J.
doaj +1 more source
Diffusion welding of a directionally solidified gamma/gamma prime - delta eutectic alloy [PDF]
Hot-press diffusion welding parameters were developed for a directionally solidified, gamma/gamma prime-delta eutectic alloy. Based on metallography, a good diffusion weld was achieved at 1100 C under 34.5 MPa (5 ksi) pressure for 1 hour.
Moore, T. J.
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Effect of Y on Oxidation Behavior of Directionally Solidified Ni-Based Single-Crystal Superalloy
Chinese Journal of Mechanical EngineeringThe effect of yttrium (Y) addition on the oxidation behavior of a Ni-based directionally solidified single-crystal superalloy is investigated in this study. Isothermal oxidation tests for samples with different levels of Y addition are conducted at 1100 °
Zihan Zhao +4 more
doaj +1 more source
Calibration approach to electron probe microanalysis: A study with PWA-1480, a nickel base superalloy [PDF]
The utility of an indirect calibration approach in electron probe microanalysis is explored. The methodology developed is based on establishing a functional relationship between the uncorrected k-ratios and the corresponding concentrations obtained using
Terepka, F. M. +2 more
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