Details
| Original language | English |
|---|---|
| Pages (from-to) | 1916-1925 |
| Number of pages | 10 |
| Journal | Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
| Volume | 38 A |
| Issue number | 9 |
| Publication status | Published - Sept 2007 |
| Externally published | Yes |
Abstract
This article reports on the influence of zirconium (Zr) addition (0.17 wt pct) on the cyclic stability of ultrafine-grained (UFG) oxygen-free high-conductivity (OFHC) copper (Cu) of originally high (99.995 wt pct) purity processed via equal-channel angular extrusion (ECAE). Systematic low-cycle fatigue (LCF) tests accompanied by microstructural investigation revealed that a Zr addition substantially affects the cyclic stability of UFG Cu, such that longer fatigue lives, notable cyclic hardening, and higher stress ranges were attained in the LCF regime. This significant improvement of the fatigue properties of OFHC Cu by the addition of Zr is attributed to the Cu-Zr precipitates and impurities, effectively limiting the mobility of the grain boundaries and additional work hardening imposed by the precipitates. In addition, the strain-amplitude and strain-rate dependencies of the cyclic stability of Zr-added UFG Cu were investigated in detail, where the UFG Cu-Zr alloy exhibits an expressively lesser dependency as compared with the pure UFG Cu. The current results offer new insight into the improvement of the cyclic stability of UFG Cu and other UFG materials, and provides a venue for their utility in a broader range of applications demanding enhanced cyclic deformation response and stability.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Materials Science(all)
- Metals and Alloys
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In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 38 A, No. 9, 09.2007, p. 1916-1925.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The influence of zirconium on the low-cycle fatigue response of ultrafine-grained copper
AU - Gabor, P.
AU - Canadinc, D.
AU - Maier, H. J.
AU - Hellmig, R. J.
AU - Zuberova, Z.
AU - Estrin, J.
N1 - Funding Information: The authors gratefully acknowledge financial support by Deutsche Forschungsgemeinschaft within the
PY - 2007/9
Y1 - 2007/9
N2 - This article reports on the influence of zirconium (Zr) addition (0.17 wt pct) on the cyclic stability of ultrafine-grained (UFG) oxygen-free high-conductivity (OFHC) copper (Cu) of originally high (99.995 wt pct) purity processed via equal-channel angular extrusion (ECAE). Systematic low-cycle fatigue (LCF) tests accompanied by microstructural investigation revealed that a Zr addition substantially affects the cyclic stability of UFG Cu, such that longer fatigue lives, notable cyclic hardening, and higher stress ranges were attained in the LCF regime. This significant improvement of the fatigue properties of OFHC Cu by the addition of Zr is attributed to the Cu-Zr precipitates and impurities, effectively limiting the mobility of the grain boundaries and additional work hardening imposed by the precipitates. In addition, the strain-amplitude and strain-rate dependencies of the cyclic stability of Zr-added UFG Cu were investigated in detail, where the UFG Cu-Zr alloy exhibits an expressively lesser dependency as compared with the pure UFG Cu. The current results offer new insight into the improvement of the cyclic stability of UFG Cu and other UFG materials, and provides a venue for their utility in a broader range of applications demanding enhanced cyclic deformation response and stability.
AB - This article reports on the influence of zirconium (Zr) addition (0.17 wt pct) on the cyclic stability of ultrafine-grained (UFG) oxygen-free high-conductivity (OFHC) copper (Cu) of originally high (99.995 wt pct) purity processed via equal-channel angular extrusion (ECAE). Systematic low-cycle fatigue (LCF) tests accompanied by microstructural investigation revealed that a Zr addition substantially affects the cyclic stability of UFG Cu, such that longer fatigue lives, notable cyclic hardening, and higher stress ranges were attained in the LCF regime. This significant improvement of the fatigue properties of OFHC Cu by the addition of Zr is attributed to the Cu-Zr precipitates and impurities, effectively limiting the mobility of the grain boundaries and additional work hardening imposed by the precipitates. In addition, the strain-amplitude and strain-rate dependencies of the cyclic stability of Zr-added UFG Cu were investigated in detail, where the UFG Cu-Zr alloy exhibits an expressively lesser dependency as compared with the pure UFG Cu. The current results offer new insight into the improvement of the cyclic stability of UFG Cu and other UFG materials, and provides a venue for their utility in a broader range of applications demanding enhanced cyclic deformation response and stability.
UR - http://www.scopus.com/inward/record.url?scp=34548652074&partnerID=8YFLogxK
U2 - 10.1007/s11661-007-9230-6
DO - 10.1007/s11661-007-9230-6
M3 - Article
AN - SCOPUS:34548652074
VL - 38 A
SP - 1916
EP - 1925
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
SN - 1073-5623
IS - 9
ER -