Investigation on microstructural and mechanical properties of B4C–aluminum matrix composites prepared by microwave sintering | Zendy

Ehsan Ghasali | Zendy; Masoud Alizadeh | Zendy; Touradj Ebadzadeh | Zendy; Amirhossein Pakseresht | Zendy; Ali Rahbari | Zendy

Open Access

Investigation on microstructural and mechanical properties of B4C–aluminum matrix composites prepared by microwave sintering

Author(s) -

Ehsan Ghasali,

Masoud Alizadeh,

Touradj Ebadzadeh,

Amirhossein Pakseresht,

Ali Rahbari

Publication year - 2015

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2015.02.005

Subject(s) - materials science , boron carbide , composite material , microstructure , sintering , composite number , vickers hardness test , aluminium , microwave , scanning electron microscope , flexural strength , compressive strength , physics , quantum mechanics

B4C reinforced aluminum composites were fabricated by microwave heating of the mixture of B4C (10, 15 and 20wt%) and aluminum powders at 650, 750, 850 and 950°C. The effect of different amounts of B4C on the microstructure and mechanical properties of aluminum matrix was examined. The maximum bending (238±10MPa) and compressive strength (330±10MPa) values were measured for composites sintered at 950 and 750°C, respectively. The maximum hardness (112Vickers) was measured for Al–20wt% B4C composite sintered at 850°C. XRD investigations showed the decomposition of boron carbide and also the formation of Al3BC by heating the composites at 850°C. SEM micrographs showed uniform distribution of reinforcement particles in Al matrix

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