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Hardness of FRHC-Cu determined by statistical analysis

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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.

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Journal of Materials Engineering and Performance, 2014, vol. 23, num. 2, p. 637-642

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Articles publicats en revistes (Ciència dels Materials i Química Física)

# metadata.dc.title[].value
Hardness of FRHC-Cu determined by statistical analysis