Effect of plasma activated sintering parameters on microstructure and mechanical properties of Al-7075/B4C composites

•Effect of holding time on properties of Al-7075/B4C composites was investigated.•Effect of temperature on properties of Al-7075/B4C composites was studied.•A relative higher bending strength of Al-7075/B4C composites was measured.•A strong combination between Al-7075 and B4C was investigated. We re...

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Bibliographic Details
Published in:Journal of alloys and compounds 2014-12, Vol.615, p.276-282
Main Authors: Wu, Chuandong, Fang, Pan, Luo, Guoqiang, Chen, Fei, Shen, Qiang, Zhang, Lianmeng, Lavernia, Enrique J.
Format: Article
Language:English
Subjects:
Al-7075/B4C Composites
Applied sciences
Bending Strength
Compressive Strength
Dispersion hardening metals
Elasticity. Plasticity
Exact sciences and technology
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Microstructure
Plasma Activated Sintering
Powder metallurgy. Composite materials
Production techniques
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Summary:•Effect of holding time on properties of Al-7075/B4C composites was investigated.•Effect of temperature on properties of Al-7075/B4C composites was studied.•A relative higher bending strength of Al-7075/B4C composites was measured.•A strong combination between Al-7075 and B4C was investigated. We report on a study on the influence of Plasma activated sintering (PAS) parameters on the microstructure and mechanical properties of aluminum matrix composites (AMCs). In this paper a commercial Al alloy (7075) reinforced with 7.5wt.% B4C were synthesized using PAS. Specifically, we studied the influence of temperature, in the range of 450°C to 540°C, and holding time on the densification behavior of Al-7075/B4C composites. Moreover, the influence of residual porosity on mechanical properties of Al-7075/B4C composites was established via measurements of Vickers hardness, bending and compressive strength. High mechanical properties including Vickers hardness 181.6 HV, bending strength 1100.3MPa, high compression yield strength 878.0MPa and fracture strength 469.3MPa of the consolidated Al-7075/B4C composite sintered at 530°C for 3min were achieved and attributed to a fully dense microstructure and a strong interface between matrix and reinforcement.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2014.06.110