Nanocarbon-reinforced metal-matrix composites for structural applications

MRS Bulletin ◽  
2019 ◽  
Vol 44 (1) ◽  
pp. 40-45 ◽  
Author(s):  
Qiang Guo ◽  
Katsuyoshi Kondoh ◽  
Seung Min Han
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Structural Applications ◽  
Image Position

Abstract

Properties of Aluminium-SiCP Composites (Review)

2017 ◽  
Vol 1143 ◽  
pp. 72-78
Author(s):  
Muna Noori ◽  
Hazim Faleh ◽  
Chisamera Mihai ◽  
Gigel Neagu ◽  
Florin Ştefănescu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Al Alloy ◽  
Matrix Composites ◽  
Specific Strength ◽  
Industrial Sectors ◽  
Structural Applications ◽  
Sic Composites ◽  
The Military

Aluminium-based Metal matrix composites (MMCs) have become increasingly used for structural applications in various industrial sectors because of their excellent specific stiffness and specific strength. Discontinuously reinforced (DR) Al/SiC metal-matrix composites (MMCs) are modern, lightweight materials which have a very attractive combination of material properties and price. The use of DR Al/SiC MMCs is mostly limited to the military and aerospace, however, these materials are now beginning to penetrate civilian applications. Besides the mechanical behavior, knowledge of the corrosion resistance of DR Al/SiC MMCs is very important, and so the corrosion resistance of Al/SiC composites has been investigated and discussed in comparison with a conventional Al alloy of similar composition.

A Review of the Status and Developmental Issues for Continuously-Reinforced Ti-Aluminide Composites for Structural Applications

1994 ◽  
Vol 350 ◽  
Author(s):  
D. B. Miracle ◽  
P. R. Smith ◽  
J. A. Graves
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Mechanical Load ◽  
Matrix Composition ◽  
Matrix Composites ◽  
Development Activity ◽  
Developmental Issues ◽  
Structural Applications ◽  
The Matrix

AbstractA significant materials-based activity to develop Ti-aluminide metal matrix composites for high temperature aerospace structural applications is now underway. A review of the approaches, progress, and status of the development of continuously-reinforced Ti-aluminide metal matrix composites with matrices which contain a significant volume fraction of the ordered orthorhombic Ti2AlNb phase will be presented. The principal application considered is a gas turbine compressor rotor ring, and this influences the development approaches and properties goals. Specific development activity that will be presented includes modification and control of the matrix composition and microstructure, fiber coating treatments to control interdiffusion between the fiber and the matrix, and to improve the ability of the interface to support a mechanical load, and efforts to improve the properties of SiC monofilaments used as reinforcements. Critical issues that define the requirements for additional studies will be presented.

Evaluation of Mechanical Properties of Aluminium Alloy 7075 Reinforced with SiC and Al2O3 Hybrid Metal Matrix Composites

2015 ◽  
Vol 766-767 ◽  
pp. 246-251 ◽  
Author(s):  
P. Pugalethi ◽  
M. Jayaraman ◽  
A. Natarajan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Weight Ratio ◽  
Hardness Test ◽  
Matrix Composites ◽  
Hybrid Metal Matrix Composites ◽  
Structural Applications

Aluminium based Metal Matrix Composites (MMCs) with Aluminium matrix and non-metallic reinforcements are finding extensive applications in automotive, aerospace and defence fields because of their high strength-to-weight ratio, high stiffness, hardness, wear-resistance, high-temperature resistance, etc. Composite materials are frequently chosen for structural applications because they have desirable combinations of mechanical characteristics. Development of hybrid metal matrix composites has become an important area of research interest in Material Science. In this work, the Aluminium alloy is reinforced with 3,5,7,9 wt. % of Al2O3 and 2 wt. % of SiC to prepare the hybrid composite. The present study is aimed at evaluating the physical properties of aluminium 7075 in the presence of silicon carbide, aluminium oxide and its combinations. The compositions are added up to the ultimate level and stir casting method is used for the fabrication of aluminium metal matrix composites. The mechanical behaviours of metal matrix composites like tensile strength, and hardness test are investigated by conducting laboratory experiments. Mechanical properties like micro hardness and tensile strength of Al7075 alloy increase with the addition of SiC and Al2O3 reinforcements.

Study on Mechanical Properties of Aluminium Based Metal Matrix Composites by Hybrid Reinforcement

2015 ◽  
Vol 813-814 ◽  
pp. 116-120
Author(s):  
K.S. Arun ◽  
T. Panneerselvam ◽  
S. Raghuraman
Keyword(s):  
Mechanical Properties ◽  
Boron Carbide ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Matrix Composites ◽  
Zirconium Silicate ◽  
Structural Applications ◽  
Aa6063 Alloy ◽  
Hybrid Reinforcement

Now a day’s Hybrid Metal Matrix composites has a large number of applications in automobiles, aircrafts and structural applications like brake rotors, engine parts and cylinder liners. The aim of this study is to determine the mechanical properties of boron carbide (B4C) and zirconium silicate (ZrSiO4) particulate reinforced with AA6063 alloy composites. In this experimental study, B4C and ZrSiO4 particulates reinforced with AA6063 composites were manufactured by stir casting technique. Mechanical properties of these composite materials were investigated by different weight percentages, 3%, 6%, 9% of boron carbide (B4C) and 9%, 6%, 3% of zirconium silicate (ZrSiO4) respectively. The mechanical properties evaluation reveals variations in hardness and the tensile strength values with the composite combinations investigated in this work. From the experimental studies, the optimum volume fraction of hybrid reinforcement in AA6063 alloy on the basis of mechanical properties and SEM analysis is also determined.

Additive manufacturing of metal matrix composites via nanofunctionalization

2018 ◽  
Vol 8 (02) ◽  
pp. 297-302 ◽  
Author(s):  
John H. Martin ◽  
Brennan D. Yahata ◽  
Eric C. Clough ◽  
Justin A. Mayer ◽  
Jacob M. Hundley ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Image Position

Abstract

Evaluation of torque as a means of in-process sensing of tool wear in friction stir welding of metal matrix composites

2015 ◽  
Vol 42 (3) ◽  
pp. 192-199 ◽  
Author(s):  
Tracie Prater ◽  
Brian Gibson ◽  
Chase Cox ◽  
George E. Cook ◽  
Al Strauss ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Tool Wear ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Major Barrier ◽  
Content Type ◽  
Wear Process ◽  
Friction Stir ◽  
Structural Applications

Purpose The purpose of this paper is to evaluate the tool experiences using torque during welding as a means of in-process sensing for tool wear. Metal matrix composites (MMCs) are materials with immense potential for aerospace structural applications. The major barrier to implementation of these materials is manufacturability, specifically joining MMCs to themselves or other materials using fusion welding. Friction stir welding (FSW) is an excellent candidate process for joining MMCs, as it occurs below the melting point of the material, thus precluding the formation of degradative intermetallics’ phases present in fusion welded joints. The limiting factor for use of FSW in this application is wear of the tool. The abrasive particles which give MMCs their enhanced properties progressively erode the tool features that facilitate vertical mixing and consolidation of material during welding, resulting in joints with porosity. While wear can be mitigated by careful selection of process parameters and/or the use of harder tool materials, these approaches have significant complexities and limitations. Design/methodology/approach This study evaluates using the torque the tool experiences during welding as a means of in-process sensing for tool wear. Process signals were collected during linear FSW of Al 359/SiC/20p and correlated with wear of the tool probe. The results of these experiments demonstrate that there is a correlation between torque and wear, and the torque process signal can potentially be exploited to monitor and control tool wear during welding. Findings Radial deterioration of the probe during joining of MMCs by FSW corresponds to a decrease in the torque experienced by the tool. Experimentally observed relationship between torque and wear opens the door to the development of in-process sensing, as the decay in the torque signal can be correlated to the amount of volume lost by the probe. The decay function for tool wear in FSW of a particular MMC can be determined experimentally using the methodology presented here. The decay of the torque signal as the tool loses volume presents a potential method for control of the wear process. Originality/value This work has near-term commercial applications, as a means of monitoring and controlling wear in process could serve to grow commercial use of MMCs and expand the design space for these materials beyond net or near-net-shape parts.

Interface characterization of metal matrix composites by transmission electron microscopy

1987 ◽  
Vol 45 ◽  
pp. 304-305
Author(s):  
I. W. Hall ◽  
A. P. Diwanji
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Structure Property ◽  
Manufacturing Method ◽  
Transmission Electron ◽  
Structural Applications

Carbon fiber reinforced metal matrix composites (MMC's) are an attractive class of materials for automotive and aerospace structural applications because of their high strength and stiffness to weight ratios and their low coefficients of thermal expansion. Successful development of these new materials demands a thorough understanding of the structure/property/processing relationships and, in particular, a detailed understanding of the fiber/matrix interface since this region strongly influences the final mechanical properties of the system. This interface is affected by many factors including the manufacturing method, heat treatment, matrix alloy composition and wettability of the fibers but, since it is a region which is typically much less than lμm wide, it is inaccessible to direct detailed observation by any means other than transmission electron microscopy.

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