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Microstructure,mechanical properties,and corrosion resistance of an explosively welded Mg-Al composite

Journal of Magnesium and Alloys 2022年第4期10卷 1086-1095页

作者： Mustafa Acarer Bilge Demir Burak Dikici emin salur Department of Metallurgical and Materials Engineering Technology FacultySelcuk UniversityKonya 42075Turkey Department of Mechanical Engineering Karabuk UniversityKarabuk 78100Turkey Department of Metallurgical and Materials Engineering Atatürk UniversityErzurum 25240Turkey

In this study,an attempt was made to manufacture an AZ31–Al5005 laminated composite by explosive welding.A mixture of ammonium nitrate(90%),fuel oil(5%),and TNT(5%)was used as the *** detonation velocity of the explosive material was approximately 3100 m•s^(−1).The microstructure and mechanical and corrosion properties of the joint were comparatively *** characterisation of the joint was conducted by optical microscopy(OM),scanning electron microscopy with energy-dispersive spectroscopy(SEM-EDS),high-resolution transmission electron microscopy(HR-TEM),and X-ray diffraction(XRD).The mechanical properties were determined using micro-Vickers hardness,tensile,and Charpy impact *** addition,electrochemical tests were conducted on the AZ31–Al5005 laminated composite and the individual components to determine their corrosion *** corrosion behaviours of the structures were determined in a 3.5%NaCl solution at room temperature using potentiodynamic scanning(PDS).The metallurgical structure and mechanical properties of the joints were within the acceptable limits.

关键词： corrosion welded Microstructure

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Mechanical properties and microstructure of composites produced by recycling metal chips

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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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