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Mechanical properties and microstructure of composites produced by recycling metal chips

International Journal of Minerals,Metallurgy and Materials 2018年第9期25卷 1070-1079页

作者： Abdullah Aslan Aydin Günes Emin Salur omer sinan shin Hakan Burak Karadag Ahmet Akdemir Department of Mechanical Engineering Selcuk UniversityKonya 42079Turkey Department of Metallurgy and Materials Engineering Necmettin Erbakan UniversityKonya 42079Turkey Department of Aircraft Engineering Necmettin Erbakan UniversityKonya 42079Turkey

In this study, the processing and mechanical properties of porous metal matrix composites(MMCs) composed of spheroidal cast iron chips(GGG40) and bronze chips(CuSn10) and formed by hot isostatic pressing were investigated. Bronze chips(CuSn10) were used as a matrix component, and spheroidal cast iron(GGG40) chips were used as a reinforcement component. The MMCs were produced with different CuSn10 contents(90 wt%, 80 wt%, 70 wt%, and 60 wt%). The hot isostatic pressing process was performed under three different pressures and temperatures. The produced MMCs were characterized using density tests, Brinell hardness tests, and compression tests. In addition, the consolidation mechanism was investigated by X-ray diffraction(XRD) analysis and scanning electron microscopy. The test results were compared with those for bulk CuSn10 and bulk GGG40. Mechanical tests results revealed that the metallic chips can be recycled by using hot pressing and that the mechanical properties of the produced MMCs were similar to those of bulk CuSn10. XRD and microscopy studies showed that no intermetallic compounds formed between the metallic chips. The results showed that the CuSn10 and GGG40 chips were consolidated by mechanical interlocking.

关键词： metal matrix composite microstructure metal chips recycle mechanical behavior

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