Tensile properties and internal friction study of dislocation movement in iron–copper system as a function of copper precipitation

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@article{581235946bad4bc384a795b561a186d3,
title = "Tensile properties and internal friction study of dislocation movement in iron–copper system as a function of copper precipitation",
abstract = "Tensile properties and internal friction of thermally aged (at 773 K) Fe–1 wt% Cu alloys are measured as a function of copper precipitation in the temperature region between 100 and 600 K. Two regimes have been clearly identified in terms of yield stress at low temperatures below 250 K. It was found that in the over-aged samples the yield stress decreases much more abruptly with the temperature than in the specimens annealed at shorter time. The internal friction spectra show the existence of similar features in all samples, which indicates that no drastic change of the microstructure occurs during aging. These results suggest that the lack of softening at low temperatures originates principally from thermally-activated kink-pair formation and gliding processes, controlled by the size and/or density of Cu-precipitates.",
keywords = "internal friction, tensile tests, iron-copper model alloy",
author = "Milan Konstantinovic and {Al Mazouzi}, Abderrahim and Marc Scibetta and {van Walle}, Eric and {Van Dyck}, Steven",
note = "Score = 10; E-MRS 2006: Symposium N ; Conference date: 02-06-2006 Through 07-06-2006",
year = "2007",
month = feb,
doi = "10.1016/j.jnucmat.2007.01.226",
language = "English",
volume = "362",
pages = "283--286",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "2-3",

}

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TY - JOUR

T1 - Tensile properties and internal friction study of dislocation movement in iron–copper system as a function of copper precipitation

AU - Konstantinovic, Milan

AU - Al Mazouzi, Abderrahim

AU - Scibetta, Marc

AU - van Walle, Eric

A2 - Van Dyck, Steven

N1 - Score = 10

PY - 2007/2

Y1 - 2007/2

N2 - Tensile properties and internal friction of thermally aged (at 773 K) Fe–1 wt% Cu alloys are measured as a function of copper precipitation in the temperature region between 100 and 600 K. Two regimes have been clearly identified in terms of yield stress at low temperatures below 250 K. It was found that in the over-aged samples the yield stress decreases much more abruptly with the temperature than in the specimens annealed at shorter time. The internal friction spectra show the existence of similar features in all samples, which indicates that no drastic change of the microstructure occurs during aging. These results suggest that the lack of softening at low temperatures originates principally from thermally-activated kink-pair formation and gliding processes, controlled by the size and/or density of Cu-precipitates.

AB - Tensile properties and internal friction of thermally aged (at 773 K) Fe–1 wt% Cu alloys are measured as a function of copper precipitation in the temperature region between 100 and 600 K. Two regimes have been clearly identified in terms of yield stress at low temperatures below 250 K. It was found that in the over-aged samples the yield stress decreases much more abruptly with the temperature than in the specimens annealed at shorter time. The internal friction spectra show the existence of similar features in all samples, which indicates that no drastic change of the microstructure occurs during aging. These results suggest that the lack of softening at low temperatures originates principally from thermally-activated kink-pair formation and gliding processes, controlled by the size and/or density of Cu-precipitates.

KW - internal friction

KW - tensile tests

KW - iron-copper model alloy

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_78601

UR - http://knowledgecentre.sckcen.be/so2/bibref/4221

U2 - 10.1016/j.jnucmat.2007.01.226

DO - 10.1016/j.jnucmat.2007.01.226

M3 - Article

VL - 362

SP - 283

EP - 286

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 2-3

T2 - E-MRS 2006: Symposium N

Y2 - 2 June 2006 through 7 June 2006

ER -

ID: 195382