Microstructure and properties of dynamically compressed copper Cu99.99

• Autorzy: Leszczyńska-Madej B. , Richert M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The main object of this study is to establish the influence of dynamic compression on the possibility of microstructure refinement in polycrystalline copper Cu99.99. Design/methodology/approach: Polycrystalline copper Cu99.99 was dynamically compressed on a falling - weight - type impact machine with strain rate ranging from 1.75×102 to 2.7×102 s-1. After deformation, the samples were tested for microhardness and their microstructure was examined by means both optical and electron microscopy. Additionally, the width of microbands observed in the microstructure was statistically evaluate by using mean chord method. The misorientation of selected microstructural elements was determined using proprietary KILIN software. Findings: It was found that to produce materials with nanometric features is not only possible by exertion of severe plastic deformation methods (SPD) but also by deformation with moderate strains and high strain rates. The demonstrated data show, that in some range the amount of deformation and strain rate can be interchangeable parameters causing similar structural effects.n. Practical implications: The results may be utilized for determination of a relation between microstructure and properties of the copper in the process of dynamic compression. Originality/value: The results contribute to evaluation properties of the polycrystalline copper in the light of achievement of fine – grained microstructure. The obtained results indicated that dynamic compression with high strain rate can be an effective method for microstructure refinement, comparable with SPD methods

Słowa kluczowe

EN

nanostructure; dynamic compression; electron microscopy; metallography; SPD method

PL

nanostruktura; kompresja dynamiczna; mikroskopia elektronowa; metalografia; metoda SPD

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2010
• Tom: Vol. 39, nr 1
• Strony: 35--42
• Opis fizyczny: Bibliogr. 26 poz., rys., tabl.

Twórcy

autor

Leszczyńska-Madej B.

autor

Richert M.

• Faculty of Non-Ferrous Metals, AGH, University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland,

Bibliografia

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