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Title: Overview of fatigue performance of Cu processed by severe plastic deformation

Abstract

This study investigated discrepancies regarding cyclic softening of Cu processed by severe plastic deformation (SPD). All samples softened if the microhardnesses before and after fatiguing are compared. However, the effect decreases if the strain amplitude is small, {Delta}{epsilon}{sub p} {lt} x 10{sup {minus}3}. Samples with equiaxed subgrains were more resistant to softening and thermal recovery. All samples had persistent shear bands except those tested at the highest amplitudes, {Delta}{epsilon}{sub p} {gt} 1 x 10{sup {minus}2}. Cu processed by SPD exhibits an enhanced fatigue life at low amplitudes. However, low thermal stability, potential for softening, and poor low-cycle properties discredit this advantage.

Authors:
; ; ;
Publication Date:
Research Org.:
Northwestern Univ., Evanston, IL (US)
OSTI Identifier:
20000142
Alternate Identifier(s):
OSTI ID: 20000142
Resource Type:
Journal Article
Journal Name:
Journal of Electronic Materials
Additional Journal Information:
Journal Volume: 28; Journal Issue: 9; Conference: 1999 TMS Annual Meeting, San Diego, CA (US), 03/02/1999--03/03/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0361-5235
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FATIGUE; COPPER; DEFORMATION; MICROHARDNESS; GRAIN SIZE; SLIP; DISLOCATIONS

Citation Formats

Agnew, S.R., Weertman, J.R., Vinogradov, A.Y., and Hashimoto, S. Overview of fatigue performance of Cu processed by severe plastic deformation. United States: N. p., 1999. Web. doi:10.1007/s11664-999-0181-0.
Agnew, S.R., Weertman, J.R., Vinogradov, A.Y., & Hashimoto, S. Overview of fatigue performance of Cu processed by severe plastic deformation. United States. doi:10.1007/s11664-999-0181-0.
Agnew, S.R., Weertman, J.R., Vinogradov, A.Y., and Hashimoto, S. Wed . "Overview of fatigue performance of Cu processed by severe plastic deformation". United States. doi:10.1007/s11664-999-0181-0.
@article{osti_20000142,
title = {Overview of fatigue performance of Cu processed by severe plastic deformation},
author = {Agnew, S.R. and Weertman, J.R. and Vinogradov, A.Y. and Hashimoto, S.},
abstractNote = {This study investigated discrepancies regarding cyclic softening of Cu processed by severe plastic deformation (SPD). All samples softened if the microhardnesses before and after fatiguing are compared. However, the effect decreases if the strain amplitude is small, {Delta}{epsilon}{sub p} {lt} x 10{sup {minus}3}. Samples with equiaxed subgrains were more resistant to softening and thermal recovery. All samples had persistent shear bands except those tested at the highest amplitudes, {Delta}{epsilon}{sub p} {gt} 1 x 10{sup {minus}2}. Cu processed by SPD exhibits an enhanced fatigue life at low amplitudes. However, low thermal stability, potential for softening, and poor low-cycle properties discredit this advantage.},
doi = {10.1007/s11664-999-0181-0},
journal = {Journal of Electronic Materials},
issn = {0361-5235},
number = 9,
volume = 28,
place = {United States},
year = {1999},
month = {9}
}