Results 161 to 170 of about 635 (184)

γ-γ′ partitioning behaviour in waspaloy

Materials Science and Engineering, 1986
Abstract Energy-dispersive spectrometry of thin foils and of extraction replicas of Waspaloy has revealed two distinct distributions of γ′ (primary and secondary) which are not distinguished by the usual bulk methods of analysis. Small amounts of chromium, molybdenum and iron have been found to partition to the A site in the A3B lattice of primary γ′
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Deformation behavior of Waspaloy at hot-working temperatures

Scripta Materialia, 2004
Abstract Isothermal, hot-compression tests were conducted on single crystals of a typical nickel-base superalloy, Waspaloy, to establish the slip systems that operate during hot working. Slip-trace analysis and flow-curve measurements revealed that deformation occurred via classical octahedral ({1 1 1}〈1 1 0〉) slip.
S.L Semiatin, P.N Fagin, M.G Glavicic, D Raabe   +3 more
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Microstructure-Resistivity Correlations in Controlled Waspaloy Microstructures

MRS Proceedings, 2006
AbstractNickel-base superalloys are an important class of metallic ‘nanocomposite’ structural materials known for their good strength retention abilities at high homologous temperatures for long service times. Literature on electrical resistivity studies of age-hardening superalloys is limited.
V. Siva Kumar G. Kelekanjeri, Rosario A Gerhardt   +1 more
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The Influence of Carbon Upon Cast Waspaloy

SAE Technical Paper Series, 1969
<div class="htmlview paragraph">Two laboratory heats of Waspaloy were melted with carbon contents of 0.01 and 0.10%. The properties and chemical gradients were measured. Tensile ductility as-cast and heat treated of the 0.01% carbon heat was markedly superior.
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The Effects of Cutting Conditions on Surface Integrity in Machining Waspaloy

Key Engineering Materials, 2014
Machining of advanced aerospace materials have grown in the recent years although the difficult-to-machine characteristics of alloys like titanium or nickel based alloys cause higher cutting forces, rapid tool wear, and more heat generation. Therefore, machining with the use of cooling lubricants is usually carried out.
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Fatigue Crack Initiation In WASPALOY at 20 °C

Metallurgical and Materials Transactions A, 2007
In two WASPALOY specimens, the orientations of grains that initiated fatigue cracks and adjacent ograins were measured using electron backscattered diffraction patterns (EBSP). Crystallographic relationships were found for crack initiating regions that resulted in slip transmission across areas larger than the initiating grain, and the initiating grain
D. L. Davidson, R. G. Tryon, M. Oja, R. Matthews, K. S. Ravi Chandran   +4 more
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Hydrogen permeation through coated and uncoated WASPALOY

Metallurgical Transactions A, 1988
Hydrogen permeability, diffusivity, and solubility have been measured for a Ni-base superalloy, WASPALOY,* over the temperature range of 200 to 560 °C. Measurements were made with various surface conditions. The hydrogen diffusivity and permeability values for Pd-coated WASPALOY were between those for pure nickel and for austenitic stainless steel ...
T. P. Perng, M. J. Johnson, C. J. Altstetter   +2 more
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Investigation of Minimal Quantity Lubrication in Turning of Waspaloy

2007
In order to achieve a more productive and environmentally friendly manufacturing of aerospace propulsion components, minimal quantity lubrication (MQL) can potentially replace the traditionally used flood cooling in different machining operations.
Tomas Beno, Marina Isaksson, Lars Pejryd
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The selection of the cutting tool by semifinishing turning of Waspaloy

2000
The investigation of using of tool carbide and ceramic inserts by semifinishing turning of Waspaloy were carried out. Previously the cutting process of superalloys was analized and after that by means of in plant experiments suitable cutting data were determined.
Pavić, Ante, Relić, Janko, Šutić, Zlatan   +2 more
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Linear friction welding behavior of Waspaloy

2009
Over conventional joining methods, linear friction welding (LFW) exhibits a high weld quality and economical benefits for the aerospace industry. In particular, LFW enables the removal of the fir-tree in conventional blade to disk assembly, which results in weight reduction and improvement in engine efficiency.
Chamanfar, A., Jahazi, M., Yue, S., Gholipour, J., Wanjara, P.   +4 more
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