Hardening due to copper precipitates in α-iron studied by atomic-scale modelling

D. J. Bacon; Yu N. Osetsky

doi:10.1016/j.jnucmat.2004.04.256

Hardening due to copper precipitates in α-iron studied by atomic-scale modelling

D. J. Bacon
, Yu N. Osetsky

Research output: Contribution to journal › Conference article › peer-review

61 Scopus citations

Abstract

We present results of a large-scale atomic-level study of dislocation-precipitate interaction. We have considered a 12 〈111〉 edge dislocation gliding in α-iron containing coherent copper precipitates of size from 0.7 to 6 nm over a temperature range from 0 to 450 K. The results demonstrate that some features are qualitatively consistent with earlier theoretical conclusions, e.g. the critical resolved shear stress (CRSS) is proportional to L^-1 and ln(D), where L and D are precipitate spacing and diameter. Other features, which are intrinsic to the atomic-level nature of the dislocation-precipitate interaction, include strong dependence of the CRSS on temperature, dislocation climb and precipitate phase transformation.

Original language	English
Pages (from-to)	1233-1237
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	329-333
Issue number	1-3 PART B
DOIs	https://doi.org/10.1016/j.jnucmat.2004.04.256
State	Published - Aug 1 2004
Event	Proceedings of the 11th Conference on Fusion Research - Kyoto, Japan Duration: Dec 7 2003 → Dec 12 2003

Funding

Research sponsored by the Office of Fusion Energy Sciences and Division of Materials Sciences and Engineering, US Department of Energy under Contract DE-AC05-00OR22725 with UT-Battelle, LLC and supported by a grant from Engineering and Physical Sciences Research Council of the United Kingdom. The authors thank Dr C.A. English and Professor G.R. Odette for stimulating discussions.

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title = "Hardening due to copper precipitates in α-iron studied by atomic-scale modelling",

abstract = "We present results of a large-scale atomic-level study of dislocation-precipitate interaction. We have considered a 12 〈111〉 edge dislocation gliding in α-iron containing coherent copper precipitates of size from 0.7 to 6 nm over a temperature range from 0 to 450 K. The results demonstrate that some features are qualitatively consistent with earlier theoretical conclusions, e.g. the critical resolved shear stress (CRSS) is proportional to L-1 and ln(D), where L and D are precipitate spacing and diameter. Other features, which are intrinsic to the atomic-level nature of the dislocation-precipitate interaction, include strong dependence of the CRSS on temperature, dislocation climb and precipitate phase transformation.",

author = "Bacon, \{D. J.\} and Osetsky, \{Yu N.\}",

year = "2004",

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doi = "10.1016/j.jnucmat.2004.04.256",

language = "English",

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pages = "1233--1237",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

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number = "1-3 PART B",

note = "Proceedings of the 11th Conference on Fusion Research ; Conference date: 07-12-2003 Through 12-12-2003",

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TY - JOUR

T1 - Hardening due to copper precipitates in α-iron studied by atomic-scale modelling

AU - Bacon, D. J.

AU - Osetsky, Yu N.

PY - 2004/8/1

Y1 - 2004/8/1

N2 - We present results of a large-scale atomic-level study of dislocation-precipitate interaction. We have considered a 12 〈111〉 edge dislocation gliding in α-iron containing coherent copper precipitates of size from 0.7 to 6 nm over a temperature range from 0 to 450 K. The results demonstrate that some features are qualitatively consistent with earlier theoretical conclusions, e.g. the critical resolved shear stress (CRSS) is proportional to L-1 and ln(D), where L and D are precipitate spacing and diameter. Other features, which are intrinsic to the atomic-level nature of the dislocation-precipitate interaction, include strong dependence of the CRSS on temperature, dislocation climb and precipitate phase transformation.

AB - We present results of a large-scale atomic-level study of dislocation-precipitate interaction. We have considered a 12 〈111〉 edge dislocation gliding in α-iron containing coherent copper precipitates of size from 0.7 to 6 nm over a temperature range from 0 to 450 K. The results demonstrate that some features are qualitatively consistent with earlier theoretical conclusions, e.g. the critical resolved shear stress (CRSS) is proportional to L-1 and ln(D), where L and D are precipitate spacing and diameter. Other features, which are intrinsic to the atomic-level nature of the dislocation-precipitate interaction, include strong dependence of the CRSS on temperature, dislocation climb and precipitate phase transformation.

UR - https://www.scopus.com/pages/publications/3343004689

U2 - 10.1016/j.jnucmat.2004.04.256

DO - 10.1016/j.jnucmat.2004.04.256

M3 - Conference article

AN - SCOPUS:3343004689

SN - 0022-3115

VL - 329-333

SP - 1233

EP - 1237

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3 PART B

T2 - Proceedings of the 11th Conference on Fusion Research

Y2 - 7 December 2003 through 12 December 2003

ER -

Hardening due to copper precipitates in α-iron studied by atomic-scale modelling

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