Push-Out Method for Micro Measurements of Interfacial Strength in Aluminium Alloy Matrix Composites

The main goal of this work was the evaluation of the interfacial strength of the carbon fibres/aluminium matrix interface dependently on the utilised composite fabrication method, namely high pressure die casting and gas pressure infiltration. In addition, the influence of a Ni-P coating on the C-fibres was investigated. The proposed measurements of the interfacial strength were carried out by means of the “push-out” method. The interfacial strength of the samples fabricated using the high-pressure infiltration method average between 19.03 MPa and 45.34 MPa.

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Threshold creep behaviour of discontinuous aluminium and aluminium alloy matrix composites: An overview

Materials Science and Engineering A ◽

10.1016/0921-5093(94)09605-v ◽

1995 ◽

Vol 190 (1-2) ◽

pp. 9-23 ◽

Cited By ~ 121

Author(s):

J. Čadek ◽

H. Oikawa ◽

V. Šustek

Keyword(s):

Aluminium Alloy ◽

Creep Behaviour ◽

Matrix Composites ◽

Alloy Matrix ◽

Aluminium Alloy Matrix

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Microstructure and Hardness of Ni-Cr Porous Preform Reinforced Al-Based Composites by Low Infiltration Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.275.251 ◽

2011 ◽

Vol 275 ◽

pp. 251-254

Author(s):

Hua Wei Rong ◽

Cheol Hong Park ◽

Won Jo Park ◽

Han Ki Yoon

Keyword(s):

Intermetallic Compounds ◽

Rapid Development ◽

High Hardness ◽

Optical Microscope ◽

Matrix Composites ◽

X Ray Diffraction ◽

Infiltration Process ◽

Pressure Infiltration ◽

X Ray ◽

Infiltration Method

With the rapid development of aerospace and automobile industries, metal matrix composites (MMCs) have attracted much attention because of its excellent performance. In this paper, Ni-Cr/AC8A composites reinforced with porous Ni-Cr preform were manufactured by low pressure infiltration process, infiltration temperatures are 700oC~850oC. The microstructure and phase composition of composites were evaluated using optical microscope, X-ray diffraction (XRD) and electro-probe microanalysis (EPMA), It's found that they're intermetallic compounds generated in the composites. Recently, intermetallic compounds have attracted much attention as high-temperature material. We study the hardness of Ni-Cr/AC8A composites, the results show the Ni-Cr/AC8A composite has high hardness due to the intermetallic compounds exist.

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Wear Behavior of TiB2/GNPs and B4C/GNPs Reinforced AA6061 Matrix Composites

Journal of Tribology ◽

10.1115/1.4049595 ◽

2021 ◽

Vol 143 (11) ◽

Author(s):

Safa Polat ◽

Yavuz Sun ◽

Engin C¸evik

Keyword(s):

Wear Behavior ◽

Sem Analysis ◽

Matrix Composites ◽

X Ray Diffraction ◽

Pressure Infiltration ◽

X Ray ◽

Wear Rates ◽

Graphene Nanoparticles ◽

Infiltration Method ◽

Scanning Electron

Abstract In this study, it was aimed to investigate the effects of reinforcements used for improving the thermal properties of AA6061 alloy on wear resistance. For this purpose, AA6061 matrix composites were produced by pressure infiltration method using ceramic microparticles (TiB2 and B4C) and graphene nanoparticles (GNPs). The produced composites were first characterized by porosity measurement, X-ray diffraction (XRD), and scanning electron microscopy (SEM) analysis. Then, the wear behavior was examined under three different loads (20–40–60 N) with the reciprocating ball on the flat method in a dry environment. Specific wear-rates were calculated according to the Archard principle by measuring the depth and width of the traces after tests with a profilometer. Wearing mechanisms were determined with the help of optical and microstructure images. According to the obtained results, it was found that B4C + GNPs reinforced samples were more resistant to abrasion at low loads, but TiB2 + GNPs reinforced samples were higher at higher loads.

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