The effect of temperature and strain rate on the interaction between an edge dislocation and an interstitial dislocation loop in α-iron

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The effect of temperature and strain rate on the interaction between an edge dislocation and an interstitial dislocation loop in α-iron. / Terentyev, Dmitry; Malerba, Lorenzo; Bacon, D.J.; Osetsky, Yu.N.; Van Dyck, Steven (Peer reviewer).

In: Journal of Physics: Condensed Matter, Vol. 19, No. 45, 16.10.2007, p. 456211-456224.

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@article{e56ef66e3e34488bae822ba1510d54cf,
title = "The effect of temperature and strain rate on the interaction between an edge dislocation and an interstitial dislocation loop in α-iron",
abstract = "The influence of temperature, T , and strain rate, ˙ε, on the reaction between the 1/2[111](1¯10) edge dislocation line and a periodic row of 4 nm interstitial dislocation loops with Burgers vector b = 1/2[1¯11] in α-Fe has been investigated by means of molecular dynamics, using a potential developed recently for body centred cubic Fe (Ackland et al 2004 J. Phys.: Condens. Matter 16 1). A dislocation segment with b = [010] is formed by favourable reaction in all cases: it is sessile in the (1¯10) glide plane and leads to the formation of a screw dipole on the line under increasing stress. The mechanism controlling line breakaway and the corresponding critical stress depend mainly on T rather than ˙ε. At high T (300 and 600 K here) the length of the screw dipole is short (",
keywords = "Fe, hardening, dislocation, dislocation loop",
author = "Dmitry Terentyev and Lorenzo Malerba and D.J. Bacon and Yu.N. Osetsky and {Van Dyck}, Steven",
note = "Score = 10",
year = "2007",
month = oct,
day = "16",
doi = "10.1088/0953-8984/19/45/456211",
language = "English",
volume = "19",
pages = "456211--456224",
journal = "Journal of Physics: Condensed Matter",
issn = "0953-8984",
publisher = "IOP - IOP Publishing",
number = "45",

}

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TY - JOUR

T1 - The effect of temperature and strain rate on the interaction between an edge dislocation and an interstitial dislocation loop in α-iron

AU - Terentyev, Dmitry

AU - Malerba, Lorenzo

AU - Bacon, D.J.

AU - Osetsky, Yu.N.

A2 - Van Dyck, Steven

N1 - Score = 10

PY - 2007/10/16

Y1 - 2007/10/16

N2 - The influence of temperature, T , and strain rate, ˙ε, on the reaction between the 1/2[111](1¯10) edge dislocation line and a periodic row of 4 nm interstitial dislocation loops with Burgers vector b = 1/2[1¯11] in α-Fe has been investigated by means of molecular dynamics, using a potential developed recently for body centred cubic Fe (Ackland et al 2004 J. Phys.: Condens. Matter 16 1). A dislocation segment with b = [010] is formed by favourable reaction in all cases: it is sessile in the (1¯10) glide plane and leads to the formation of a screw dipole on the line under increasing stress. The mechanism controlling line breakaway and the corresponding critical stress depend mainly on T rather than ˙ε. At high T (300 and 600 K here) the length of the screw dipole is short (

AB - The influence of temperature, T , and strain rate, ˙ε, on the reaction between the 1/2[111](1¯10) edge dislocation line and a periodic row of 4 nm interstitial dislocation loops with Burgers vector b = 1/2[1¯11] in α-Fe has been investigated by means of molecular dynamics, using a potential developed recently for body centred cubic Fe (Ackland et al 2004 J. Phys.: Condens. Matter 16 1). A dislocation segment with b = [010] is formed by favourable reaction in all cases: it is sessile in the (1¯10) glide plane and leads to the formation of a screw dipole on the line under increasing stress. The mechanism controlling line breakaway and the corresponding critical stress depend mainly on T rather than ˙ε. At high T (300 and 600 K here) the length of the screw dipole is short (

KW - Fe

KW - hardening

KW - dislocation

KW - dislocation loop

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_83630

UR - http://knowledgecentre.sckcen.be/so2/bibref/4491

U2 - 10.1088/0953-8984/19/45/456211

DO - 10.1088/0953-8984/19/45/456211

M3 - Article

VL - 19

SP - 456211

EP - 456224

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 45

ER -

ID: 297615