Strength and ductility of thin Cu wires

Golta Khatibi, Roland Stickler, Brigitte Weiss

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

Abstract

The stress - strain behavior of thin copper wires in the range 20-250 œm diameter and various purities (3N, 5N) have been investigated. The wires were subjected to a recrystallization heat treatment and tensile properties were determined. Tensile testing was performed using a microtensile testing machine equipped with a non-contacting laser-optical speckle correlation sensor adapted for high-resolution strain measurement. The fracture elongation of all specimens exhibited lower values than that of bulk Cu with a decreasing trend for thinner wires. High-purity wires with a pronounced bamboo structure showed a size dependence of the yield strength which increased with decreasing wire diameter. Surface topography and fracture surfaces of the specimens were examined. The microstructural investigations were performed to arrive at an understanding and interpretation of our experimental results.
OriginalspracheEnglisch
Seiten (von - bis)749-753
Seitenumfang5
FachzeitschriftInternational Journal of Materials Research
Jahrgang94
Ausgabenummer6
PublikationsstatusVeröffentlicht - 2003

ÖFOS 2012

  • 104017 Physikalische Chemie

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