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Title: Hardness of FRHC-Cu determined by statistical analysis
Author: Roa Rovira, Joan Josep
Martínez López, Mònica
Rayón, E.
Ferrer, N.
Espiell Álvarez, Ferran
Segarra Rubí, Mercè
Keywords: Coure
Conductivitat elèctrica
Propietats mecàniques
Mètodes estadístics
Electric conductivity
Mechanical properties
Statistical methods
Issue Date: Feb-2014
Publisher: Springer Verlag
Abstract: A statistical indentation method has been employed to study the hardness value of fire-refined high conductivity copper, using nanoindentation technique. The Joslin and Oliver approach was used with the aim to separate the hardness (H) influence of copper matrix, from that of inclusions and grain boundaries. This approach relies on a large array of imprints (around 400 indentations), performed at 150 nm of indentation depth. A statistical study using a cumulative distribution function fit and Gaussian simulated distributions, exhibits that H for each phase can be extracted when the indentation depth is much lower than the size of the secondary phases. It is found that the thermal treatment produces a hardness increase, due to the partly re-dissolution of the inclusions (mainly Pb and Sn) in the matrix.
Note: Reproducció del document publicat a:
It is part of: Journal of Materials Engineering and Performance, 2014, vol. 23, num. 2, p. 637-642
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ISSN: 1059-9495
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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