Microstructural evolution of Cu-1 at% Ti alloy aged in a hydrogen atmosphere and its relation with the electrical conductivity |
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Authors: | Satoshi Semboshi Talaat Al-Kassab Ryota Gemma Reiner Kirchheim |
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Affiliation: | 1. Department of Materials Science, Osaka Prefecture University, Sakai 599-8531, Japan;2. Institute for Material Physics, Friedrich-Hund-Platz 1, 37077 Goettingen, Germany |
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Abstract: | Copper alloys with titanium additions between 1 and 6 at% Ti emerge currently as attractive conductive materials for electrical and electronic commercial products, since they exhibit superior mechanical and electrical properties. However, their electrical conductivity is reduced owing to the residual amount of Ti solutes in the Cu solid solution (Cuss) phase. Since Cu shows only poor reactivity with hydrogen (H), while Ti exhibits high affinity to it, we were inspired by the idea that hydrogenation of Cu–Ti alloys would influence their microstructure, resulting in a significant change of their properties. In this contribution, the influence of aging under a deuterium (D2) atmosphere of Cu-1 at% Ti alloys on their microstructure is investigated to explore the effects on the electrical conductivity. The specimens were investigated by means of transmission electron microscopy (TEM), field ion microscopy (FIM), computer-aided field ion image tomography (cFIIT), and atom probe tomography (APT). |
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Keywords: | Cu&ndash Ti alloy Deuterium Titanium hydride Aging Microstructure Electrical conductivity Transmission electron microscopy Field ion microscopy Atom probe tomography |
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