Microstructure evaluation of long-term aged binary Ag-Cu alloy

• Autorzy: Labisz K. , Rdzawski Z. , Pawlyta M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In this work there are presented microstructure investigation results of the long aged Ag-Cu alloy used for monetary production. The purpose of this work was to determine the microstructural phase changes after 30 year ageing time, with appliance of transmission electron microscopy. Mainly the possibility of spinodal decomposition process occurrence was investigated. Design/methodology/approach: The investigations were performed using optical microscopy for the microstructure determination. By mind of the transmission and scanning electron microscopy the phase determination was possible to achieve. Morphology investigation of the Ag-Cu matrix and phase identification using electron diffraction, EBSD technique and SEM phase contrast methods was applied. Findings: After the long time ageing time and plastic deformation of the material there are morphological different areas of the Agá and Cuâ phase detected. Research limitations/implications: The investigated material samples were examined metallographically using light microscope, SEM, TEM with different image techniques. The hardness was measured using the Rockwell hardness tester, also EDS microanalysis and electron diffraction was performed. Practical implications: As an implication for practice use there is the possibility of application of long term ageing for mechanical properties improvement by natural ageing method. Also the comparison of microstructure change and deformation after long term ageing can deliver a new scientific view on the processes occurred in the microstructure over a long time period - spinodal decomposition can act as an example of this. Some other investigations should be performed in the future, but the knowledge found in this research shows an interesting investigation direction, where a low cost but long term treatment operations can be applied. Originality/value: The combination of TEM investigation for silver containing alloys makes the investigation very attractive for electronic, chemical and monetary industry branches.

Słowa kluczowe

EN

heat treatment; surface treatment; plastic forming

PL

obróbka cieplna; obróbka powierzchniowa; obróbka plastyczna

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2011
• Tom: Vol. 49, nr 1
• Strony: 15--24
• Opis fizyczny: Bibliogr. 25 poz.

Twórcy

autor

Labisz K.

autor

Rdzawski Z.

autor

Pawlyta M.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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