Cascade overlap with vacancy-type defects in Fe

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Kuvaus

In order to understand the effect of irradiation on the material properties, we need to look into the atomistic evolution of the system during the recoil event. The nanoscale features formed due to irradiation will ultimately affect the macroscopic properties of the material. The defect production in pristine materials have been subject to investigation previously, but as the dose increases, overlap will start to happen. This effect of cascades overlapping with pre-existing debris has only recently been touched, and mainly been investigated for interstitial-type defects. We focus on vacancy-type defect clusters in BCC Fe and start a recoil event in their near vicinity. The final defect number as well as the transformation of the defect clusters are investigated, and their behaviour is related to the distance between the defect and the cascade centre. We found that for vacancy-type defects, the suppression of defect production is not as strong as previously observed for interstitial-type defects. The cascade-induced transformation, such as change in Burgers vector or creation of dislocations, was determined for all initial defect structures.

Alkuperäiskielienglanti
Artikkeli146
LehtiEuropean Physical Journal B. Condensed Matter and Complex Systems
Vuosikerta92
Numero7
Sivumäärä7
ISSN1434-6028
DOI - pysyväislinkit
TilaJulkaistu - 3 heinäkuuta 2019
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

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title = "Cascade overlap with vacancy-type defects in Fe",
abstract = "In order to understand the effect of irradiation on the material properties, we need to look into the atomistic evolution of the system during the recoil event. The nanoscale features formed due to irradiation will ultimately affect the macroscopic properties of the material. The defect production in pristine materials have been subject to investigation previously, but as the dose increases, overlap will start to happen. This effect of cascades overlapping with pre-existing debris has only recently been touched, and mainly been investigated for interstitial-type defects. We focus on vacancy-type defect clusters in BCC Fe and start a recoil event in their near vicinity. The final defect number as well as the transformation of the defect clusters are investigated, and their behaviour is related to the distance between the defect and the cascade centre. We found that for vacancy-type defects, the suppression of defect production is not as strong as previously observed for interstitial-type defects. The cascade-induced transformation, such as change in Burgers vector or creation of dislocations, was determined for all initial defect structures.",
keywords = "ALPHA-FE, CARBIDES, DISLOCATION LOOPS, DISPLACEMENT CASCADES, HEAVY-ION DAMAGE, IRRADIATION, MOLECULAR-DYNAMICS, SIMULATION, TEMPERATURE, TRANSITION, 114 Physical sciences",
author = "Fredric Granberg and Jesper Byggm{\"a}star and Kai Nordlund",
year = "2019",
month = "7",
day = "3",
doi = "10.1140/epjb/e2019-100240-3",
language = "English",
volume = "92",
journal = "European Physical Journal B. Condensed Matter and Complex Systems",
issn = "1434-6028",
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Cascade overlap with vacancy-type defects in Fe. / Granberg, Fredric; Byggmästar, Jesper; Nordlund, Kai.

julkaisussa: European Physical Journal B. Condensed Matter and Complex Systems, Vuosikerta 92, Nro 7, 146, 03.07.2019.

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - Cascade overlap with vacancy-type defects in Fe

AU - Granberg, Fredric

AU - Byggmästar, Jesper

AU - Nordlund, Kai

PY - 2019/7/3

Y1 - 2019/7/3

N2 - In order to understand the effect of irradiation on the material properties, we need to look into the atomistic evolution of the system during the recoil event. The nanoscale features formed due to irradiation will ultimately affect the macroscopic properties of the material. The defect production in pristine materials have been subject to investigation previously, but as the dose increases, overlap will start to happen. This effect of cascades overlapping with pre-existing debris has only recently been touched, and mainly been investigated for interstitial-type defects. We focus on vacancy-type defect clusters in BCC Fe and start a recoil event in their near vicinity. The final defect number as well as the transformation of the defect clusters are investigated, and their behaviour is related to the distance between the defect and the cascade centre. We found that for vacancy-type defects, the suppression of defect production is not as strong as previously observed for interstitial-type defects. The cascade-induced transformation, such as change in Burgers vector or creation of dislocations, was determined for all initial defect structures.

AB - In order to understand the effect of irradiation on the material properties, we need to look into the atomistic evolution of the system during the recoil event. The nanoscale features formed due to irradiation will ultimately affect the macroscopic properties of the material. The defect production in pristine materials have been subject to investigation previously, but as the dose increases, overlap will start to happen. This effect of cascades overlapping with pre-existing debris has only recently been touched, and mainly been investigated for interstitial-type defects. We focus on vacancy-type defect clusters in BCC Fe and start a recoil event in their near vicinity. The final defect number as well as the transformation of the defect clusters are investigated, and their behaviour is related to the distance between the defect and the cascade centre. We found that for vacancy-type defects, the suppression of defect production is not as strong as previously observed for interstitial-type defects. The cascade-induced transformation, such as change in Burgers vector or creation of dislocations, was determined for all initial defect structures.

KW - ALPHA-FE

KW - CARBIDES

KW - DISLOCATION LOOPS

KW - DISPLACEMENT CASCADES

KW - HEAVY-ION DAMAGE

KW - IRRADIATION

KW - MOLECULAR-DYNAMICS

KW - SIMULATION

KW - TEMPERATURE

KW - TRANSITION

KW - 114 Physical sciences

U2 - 10.1140/epjb/e2019-100240-3

DO - 10.1140/epjb/e2019-100240-3

M3 - Article

VL - 92

JO - European Physical Journal B. Condensed Matter and Complex Systems

JF - European Physical Journal B. Condensed Matter and Complex Systems

SN - 1434-6028

IS - 7

M1 - 146

ER -