Hardness of FRHC-Cu determined by statistical analysis


Autoria(s): Roa Rovira, Joan Josep; Martínez López, Mònica; Rayón, E.; Ferrer, N.; Espiell Álvarez, Ferran; Segarra Rubí, Mercè
Contribuinte(s)

Universitat de Barcelona

Resumo

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.

Identificador

http://hdl.handle.net/2445/54385

Idioma(s)

eng

Publicador

Springer Verlag

Direitos

(c) ASM International , 2014

info:eu-repo/semantics/openAccess

Palavras-Chave #Coure #Conductivitat elèctrica #Propietats mecàniques #Mètodes estadístics #Copper #Electric conductivity #Mechanical properties #Statistical methods
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion