Microstructure and Orientation Effects on Properties of Discontinuous Silicon Carbide/aluminum Composites PDF Download
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Author: David L. McDanels
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 36
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Book Description
Author: David L. McDanels
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 36
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Book Description
Author: David L. McDanels
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 36
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Book Description
Author: P. Balladon
Publisher:
ISBN:
Category : Mechanical properties
Languages : en
Pages : 13
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Book Description
Three grades of silicon carbide (SiC) reinforced aluminium alloys are studied: one grade fabricated by powder metallurgy and reinforced by ?25% volume fraction (vf) SiC particulates; two grades produced by casting and reinforced by ?15% vf SiC whiskers.
Author: Franklin Edward Wawner
Publisher:
ISBN:
Category :
Languages : en
Pages : 110
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Book Description
This program deals with determining factors that influence strength, ductility, fracture toughness, and elongation to failure in Silicon Carbon Whisker/Aluminum alloy composites. Specifically, a microstructural study is being made in an attempt to define extrinsic and intrinsic factors that control fracture and thus influence properties. One of the more important products produced by ACMC from SiCw/Al composites has been the rolled sheet. The response of the material to secondary processing and thermo-mechanical treatment is of utmost importance with respect to material quality. The present study emphasizes microstructural-mechanical property characterization of the rolled material (JES).
Author: Chikara Fujiwara
Publisher:
ISBN:
Category :
Languages : en
Pages : 67
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Book Description
SiC particulate reinforced A1-2%Mg composites were produced at volume fractions 0.1, 0.2, and 0.3 by inert atmosphere ball milling followed by Hot Isostatic Pressing consolidation and extrusion. The SiC particulate sizes evaluated were 5 microns, 1 micron, and 0.2 microns. The processing sequences were carefully controlled to minimize oxygen contamination. The resulting microstructures of the as-extruded materials showed a very uniform distribution of particulates within the matrix. Ultimate strength, 0.2% yield strength, and modulus of elasticity increased with decreasing SiC particulate size: 1 micron SiC-A1 matrix showed the highest elongation. Fractures originated at inclusions rich in iron, chromium, and nickel. These contaminants seemed to come from the mill chamber and/or the hardened steel balls during ball milling. Keywords: Silicon carbide, Composites, Ball milling, Microstructure.
Author: Sylvie Dionne
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 13
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Book Description
Author: Franklin Edward Wawner
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
This program deals with determining factors that influence strength, ductility, and elongation to failure in SiC whisker/Al alloy composites. Specifically, a microstructural study was made in an attempt to define extrinsic and intrinsic factors that control fracture and thus influence properties. One of the more important products by ACMC from SiC/Al composites has been the rolled sheet. The response of the material to secondary processing and thermo-mechanical treatment is of utmost importance with respect to material quality. The present study emphasizes microstructural-mechanical property characterization of the rolled material. Keywords: SiC whisker composites; Thermomechanical treatment; Processing microstructure-mechanical property correlations. (JES).
Author: Sven Alagic
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Aluminum is widely used in aerospace structural components because of its low cost, light weight, and high strength properties. Aluminum silicon carbide composites are an opportunity to reduce weight of these structural components without sacrificing strength. Aluminum and silicon carbide have similar densities (2.6 and 3.21 g/cm3 respectively), but silicon carbide has much higher hardness and strength. In this thesis, improved hardness, elastic modulus, yield strength, and ultimate tensile strength were achieved in an aluminum alloy based composite system by the addition of silicon carbide particles. Bulk baseline samples as well as samples containing various amounts of SiC were manufactured using Field Assisted Sintering Technology (FAST). Hardness was found to improve from 130 HV in ECKA Al-Alloy to 207 HV in Al Alloy with 40% SiC composite (60% improvement). This improvement was accompanied with an improvement in elastic modulus from 81 GPa in ECKA Aluminum Alloy to 126 GPa in Aluminum Alloy with 40% SiC (40% improvement). Yield strength improved from 211 to 417 MPa (97% improvement) and ultimate tensile strength improved from 308 to 472 MPa (50% improvement) for these materials.The microstructure of the samples revealed a homogeneous dispersion of silicon carbide particles throughout the aluminum matrix. The improvement in specific strength was 50% over the baseline aluminum alloy. The samples have been used as extrusion feedstock as a proof of concept for eventual structural applications.
Author: Joseph R. Davis
Publisher: ASM International
ISBN: 9780871704962
Category : Technology & Engineering
Languages : en
Pages : 802
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Book Description
This one-stop reference is a tremendous value and time saver for engineers, designers and researchers. Emerging technologies, including aluminum metal-matrix composites, are combined with all the essential aluminum information from the ASM Handbook series (with updated statistical information).
Author: Niels Hansen
Publisher: Ris National Laboratory
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 790
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Book Description
