Effect of friction stir processing (FSP) on microstructure and hardness of AlMg10/SiC composite

• Autorzy: Iwaszko J. , Kudła K.

Identyfikatory

DOI

10.24425/bpas.2019.126530

• Języki publikacji: EN

Abstrakty

EN

The AlMg10 aluminum alloy reinforced with SiC particles was subjected to friction stir processing (FSP). The composite was made by mechanical mixing and gravity casting. The mass fraction of SiC particles in the composite was about 10%. Evaluation of the effects of FSP treatment was performed by means of light microscopy, scanning electron microscopy, EDS and hardness measurement. It was found that the inhomogeneous distribution of SiC particles and their agglomeration, which were observable in the cast composite, were completely eliminated after FSP modification. The treatment was also accompanied by homogenisation of the material in the mixing zone as well as fragmentation of both the matrix grain of the composite and SiC particles. In the case of SiC particles, a change in their shape was also observed. In the as-cast composite, particles with dimensions from 30 to 60 μm and a sharp-edged polyhedral shape prevailed, while in the material subjected to friction treatment, particles with dimensions from 20 to 40 μm and a more equiangular shape prevailed. Pores and other material discontinuities occurring frequently in the as-cast composite were completely eliminated after friction modification. The recorded changes in the microstructure of the material were accompanied by an increase in the hardness of the composite by nearly 35%. The conducted investigations have shown that FSP modification of the AlMg10/SiC composite made by the casting method leads to favorable microstructural changes in the surface layer and may be an alternative solution to other methods and technologies used in surface engineering.

Słowa kluczowe

EN

friction stir processing; AlMg10/SiC composite; microstructure

PL

kompozyt AlMg10/SiC; mikrostruktura; FSP

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2019
• Tom: Vol. 67, nr 2
• Strony: 185--192
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Iwaszko J.

• Częstochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute of Materials Engineering, 19 Armii Krajowej St., 42-200 Częstochowa, Poland
• [e-mail]

autor

Kudła K.

• Częstochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Department of Welding, 21 Armii Krajowej St., 42-200 Częstochowa, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).