On the impact toughness of Al-15 vol.% B 4 C metal matrix composites

Ibrahim, M. F.; Ammar, Hany R.; Samuel, A. M.; Soliman, Mahmoud S.; Samuel, F. H.

doi:10.1016/j.compositesb.2015.04.018

Cited by 63 publications

(18 citation statements)

References 27 publications

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“…These materials are characterized by the high mechanical properties such as tensile, bending or compression strength, but on the other hand they are not characterized by the large impact strength. These issues have been investigated by researchers using composite materials with different matrices and with various contents of the reinforcing elements [14][15][16][17][18]. Relatively few, however, can be found in literature on impact strengths of metallic composite materials at elevated temperatures, which may be essential during their use.…”

Section: Introductionmentioning

confidence: 99%

Impact Strength of Composite Materials Based on EN AC-44200 Matrix Reinforced with Al2O3 Particles

Kurzawa

Kaczmar

2017

Archives of Foundry Engineering

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The paper presents the results of research of impact strength of aluminum alloy EN AC-44200 based composite materials reinforced with alumina particles. The research was carried out applying the materials produced by the pressure infiltration method of ceramic preforms made of Al2O3 particles of 3-6m with the liquid EN AC-44200 Al alloy. The research was aimed at determining the composite resistance to dynamic loads, taking into account the volume of reinforcing particles (from 10 to 40% by volume) at an ambient of 23°C and at elevated temperatures to a maximum of 300°C. The results of this study were referred to the unreinforced matrix EN AC-44200 and to its hardness and tensile strength. Based on microscopic studies, an analysis and description of crack mechanics of the tested materials were performed. Structural analysis of a fracture surface, material structures under the crack surfaces of the matrix and cracking of the reinforcing particles were performed.

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Section: Introductionmentioning

confidence: 99%

Impact Strength of Composite Materials Based on EN AC-44200 Matrix Reinforced with Al2O3 Particles

Kurzawa

Kaczmar

2017

Archives of Foundry Engineering

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“…Aluminium-based metal matrix composites (AMCs) are widely used in the aerospace, defence and automotive industries because of these materials' lightness, high specific strength, excellent wear resistance and controllable expansion coefficient [1][2][3]. Brake rotors, pistons and connecting rods are among the betterknown applications of AMCs in the automotive industry [4].…”

Section: Introductionmentioning

confidence: 99%

Macro and nanoscale wear behaviour of Al-Al 2 O 3 nanocomposites fabricated by selective laser melting

Han

Geng

Setchi

et al. 2017

Composites Part B: Engineering

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Aluminium-based composites are increasingly applied within the aerospace and automotive industries. Tribological phenomena such as friction and wear, however, negatively affect the reliability of devices that include moving parts; the mechanisms of friction and wear are particularly unclear at the nanoscale. In the present work, pin-on-disc wear testing and atomic force microscopy nanoscratching were performed to investigate the macro and nanoscale wear behaviour of an Al-Al 2 O 3 nanocomposite fabricated using selective laser melting. The experimental results indicate that the Al 2 O 3 reinforcement contributed to the macroscale wear-behaviour enhancement for composites with smaller wear rates compared to pure Al. Irregular pore surfaces were found to result in dramatic fluctuations in the frictional coefficient at the pore position within the nanoscratching. Both the size effect and the workingprinciple difference contributed to the difference in frictional coefficients at both the macroscale and the nanoscale.

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“…Such conditions lead to significant grain growth which causes drop of mechanical properties, mainly toughness and flexural strength. Previous studies on B 4 C based ceramics have shown improved sinterability and mechanical properties with the addition of a second phase, such as metallic (Al [13], Ni and Cr [14]) and non-metallic additives like oxides (Al 2 O 3 [15] and Y 2 O 3 [16]), carbides (SiC [17] and WC [18]), nitrides (AlN [19] and BN [20]), borides (TiB 2 [21], CrB 2 [22]), etc. These additives are proved to improve the sinterability of boron carbide efficiently.…”

Section: Introductionmentioning

confidence: 99%

High temperature flexural strength and oxidation behavior of hot-pressed B4C–ZrB2 ceramics with various ZrB2 contents at 1000–1600 °C in air

Zhou

et al. 2016

International Journal of Refractory Metals and Hard Materials

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High temperature flexural and oxidation behavior of hot-pressed B 4 C-ZrB 2 ceramics with various ZrB 2 addition amounts were measured and analyzed in the temperature range of 1000 to 1600 o C in ambient air atmosphere. The high temperature flexural strength is strong function of temperature. With the temperature increasing, the high temperature flexural strength decreases. The oxidation behavior was investigated in detailed, and the oxidation mechanism was summarized. The purpose of this study is aim to give fundamental understanding of the high temperature behavior of B 4 C based ceramics.

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On the impact toughness of Al-15 vol.% B 4 C metal matrix composites

Cited by 63 publications

References 27 publications

Impact Strength of Composite Materials Based on EN AC-44200 Matrix Reinforced with Al2O3 Particles

Impact Strength of Composite Materials Based on EN AC-44200 Matrix Reinforced with Al2O3 Particles

Macro and nanoscale wear behaviour of Al-Al 2 O 3 nanocomposites fabricated by selective laser melting

High temperature flexural strength and oxidation behavior of hot-pressed B4C–ZrB2 ceramics with various ZrB2 contents at 1000–1600 °C in air

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