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2 edition of Directionally Solidified in-Situ Composites. found in the catalog.

Directionally Solidified in-Situ Composites.

North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development.

Directionally Solidified in-Situ Composites.

by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development.

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  • 32 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesAGARD advisory report -- 76
ContributionsThompson, E.R.
ID Numbers
Open LibraryOL21698531M

A derivation of an evolution equation for back-stress in the context of primary creep is also presented. The results from neutron diffraction with in-situ creep experiments on directionally solidified nickel superalloys are presented in order to demonstrate the validity of the proposed equation and the corollaries derived therefrom. View Full-Text. The papers in this volume cover a broad spectrum of topics that represent the truly diverse nature of the field of composite materials. This collection presents research and findings relevant to the latest advances in composites materials, specifically their use in aerospace, maritime, and even.

Metal Matrix Composites Directionally Solidified Alicia Esther Ares, Carlos Enrique Schvezov. Nanoparticulate Reinforced Aluminum Alloy Composites Produced by Powder Metallurgy Route Kaspar Kallip, Lauri Kollo, Marc Leparoux, Christopher Bradbury. Growth Kinetics of Magnesio-Aluminate Spinel in Al/Mg Lamellar Composite Interface. Influence of fiber alignment on creep in directionally solidified NialMo in-situ composites Intermetallics 35 (); S. Roy, K. G. Schell, E. C. Bucharsky, K. A. Weidenmann, A. Wanner, and M.J. Hoffmann: Characterization of Elastic Properties in Porous Silicon Carbide Preforms Fabricated Using Polymer Waxes as Pore Formers J. Am. Ceram.

What is in-situ microscopy?. In-situ transmission electron microscopy combines the image formation capabilities of the transmission electron microscope (TEM) with the application of one or more external stimuli to observe real-time sample dynamics. Currently, a wide variety of systems and holders are available to apply different stimuli to evaluate dynamics during electrical . The proceedings of the Twenty-First University Conference on Ceramic Science held at The Pennsylvania State University, University Park, PA on J 18 are compiled in this volume "Tailoring Multiphase and Composite Ceramics". This Conference emphasized the' discussion and analysis.


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Directionally Solidified in-Situ Composites by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Download PDF EPUB FB2

Get this from a library. Specialists Meeting on Directionally Solidified In-Situ Composites: papers presented at the 38th meeting of the Structures and Materials Panel in Washington, D.C., April [E R Thompson; P R Sahm; North Atlantic Treaty Organization.

Advisory Group for Aerospace Research and Development. Structures Directionally Solidified in-Situ Composites. book Materials Panel.;].

Niobium Silicide High Temperature In Situ Composites B. Bewlay. General Electric – CR + D, Schenectady, NYUSA Book Editor(s): J.

Westbrook. Directionally Solidified Eutectics. Nb‐Silicide Based by: "The proceedings of the AGARD Structures and Materials Panel Specialists Meeting on Directionally Solidified In-situ Composites are published as Conference proceedings no.

" Description: iii, 2 pages, [3] pages ; 30 cm. Series Title: AGARD advisory report, no. Other Titles: Directionally solidified in-situ composites: Responsibility.

Nb-Si in situ composites with a nominal composition of NbTiSi-X (at.%, X represents Ni, Co, B, or Ge) are prepared using non-consumable arc melting technology. Directional solidification of RMICs has been performed using an optical imaging float zone process (OIFZ) by Pope et al.

() and Shah et al. ().This float zone method is derived from the zone melting technique of Pfann () where a small volume of material, in a relatively large rod-type charge, is melted and then the molten zone is translated along the rod.

Under the investigated testing conditions, NiAl–9Mo in situ composites showed a stress exponent of n = –5 and an activation energy of Q c = ± 19 kJ mol –1, which are close to the corresponding values (n ≈ 5 and Q c = kJ mol –1) of binary NiAl crept at similar temperatures but under considerably lower stress (only 4–5% of Cited by: 7.

Book Bewlay, B P; Jackson, M R; Lipsitt, H A. This paper examines microstructure-property relationships in high-temperature directionally solidified (DS) in-situ composites based on Nb silicides, such as Nb{sub 3}Si and Nb{sub 5}Si{sub 3}.

These in-situ composites are based on the Nb{sub 3}Si-Nb binary eutectic, and are alloyed with Ti. They. In Nb-silicide based alloys, eutectics can form that contain the Nbss and Nb5Si3 phases.

The Nb5Si3 can be rich or poor in Ti, the Nb can be substituted with other transition and refractory metals, and the Si can be substituted with simple metal and metalloid elements.

For the production of directionally solidified in situ composites of multi-element Nb-silicide based Cited by: @article{osti_, title = {Alloy and structural optimization of a directionally solidified lamellar eutectic alloy.

[Ni% Nb 5% Al% Cr]}, author = {Sheffler, K.D.}, abstractNote = {Mechanical property characterization tests of a directionally solidified Ni percent Cb percent Al percent Cr cellular eutectic turbine blade alloy demonstrated excellent long time.

In book: Comprehensive Composite Materials, pp The microstructures and fracture toughness data of directionally solidified in situ composites generated from Nb Si and Cr Nb alloy. Flight Mechanics Panel., 1 book Specialists Meeting on Directionally Solidified In-Situ Composites ( Washington), 1 book Specialists Meeting on Low Cycle High Temperature Fatigue ( Washington), 1 book Dino A.

Lorenzini, 1 book Symposium on Aircraft Design Integration and Optimization ( Florence), 1 book P. Crimi, 1 book. Well-aligned in situ composites obtained in directionally solidified Fe–Ni peritectic system are formed by nonisothermal cellular coupled growth instead of isothermal coupled growth because of morphological instabilities.

Peritectic coupled growth, with a plane interface like eutectic coupled growth, is always unstable due to the influence of peritectic reaction around the liquid/ δ ∕ γ Cited by:   Directional solidification of eutectic alloys has been recognized as promising technique for producing in situ composite materials exhibiting balance of properties.

Therefore, an in situ NiAl-V eutectic composite has been successfully directionally solidified using Bridgman technique. The mechanical behavior of the composite including fracture resistance, Cited by: 9.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. To evaluate various in-situ reinforcement schemes, a computer controlled containerless directional solidification system has been used to produce NiAl-based polyphase composites containing up to two intermetallic phases and at least one ductile phase.

The Effect of Microstructure on Mechanical Properties of Directionally Solidified Al2o3/Zro2(y2o3) Eutectic [Sayir, Ali, Farmer, Serene C., Nasa Technical Reports Server (Ntrs)] on *FREE* shipping on qualifying offers.

The Effect of Microstructure on Mechanical Properties of Directionally Solidified Al2o3/Zro2(y2o3) EutecticCited by: The boron fiber reinforced aluminum matrix composite system was developed in the s.

Unidirectionally solidified eutectics with an aligned two-phase micro-structure were produced about the same time. Carbon fiber reinforced metallic composites were successfully made in Cited by: Abstract: Small fatigue crack behaviors in a nickel-based directionally solidified superalloy DZ4 were studied by in situ scanning electron microscopy.

The crack initiation and propagation manners were identified under different temperatures, i.e. 25oC, oC, oC. About this book The papers in this volume cover a broad spectrum of topics that represent the truly diverse nature of the field of composite materials.

This collection presents research and findings relevant to the latest advances in composites materials, specifically their use in aerospace, maritime, and even land applications.

The high-temperature strength of NbSi2 is expected to be further improved by incorporation with Nb5Si3, which performs a high creep resistance and strength at high temperature due to its complex crystal structure.

In this paper, directionally solidified NbSi2/ Nb5Si3 in-situ composites have been prepared using an optical floating zone method. DSEC VI Salerno (Italy), September 3. TITLE. 6th Directionally Solidified Eutectics Conference Abstract Book- EDITORS. Ofelia Durante, Guerino Avallone.

DISCLAIMER Directionally solidified binary eutectics are of great practical interest as self-organized composite materials and by in situ experimentation in transparent File Size: 2MB.Directionally solidified superalloys have been extensively used as turbine blade materials to improve creep-rupture and thermal fatigue performances.

Turbine blades are subjected to fluctuant temperature changes. Precise knowledge of material behavior at various temperatures is essential in design and service life evaluation of turbine : Chen-Ming Kuo.Titanium aluminides has the potential of replacing nickel-based superalloys in the aerospace industries because its density is almost half that of nickel-based alloys.

Nevertheless, the room temperature properties (ductility) have made the wider application of this class of intermetallic alloy far from being realized. This has led to various research been carried out in adjusting the Author: Sadiq Abiola Raji, Abimbola Patricia Idowu Popoola, Sisa Leslie Pityana, Olawale Muhmmed Popoola, Fa.