Irradiation-induced formation of nanorod precipitates in a dilute Cu-W alloy

Shipeng Shu; Xuan Zhang; John A. Beach; Pascal Bellon; Robert S. Averback

doi:10.1016/j.scriptamat.2016.01.012

Irradiation-induced formation of nanorod precipitates in a dilute Cu-W alloy

Shipeng Shu, Xuan Zhang, John A. Beach, Pascal Bellon, Robert S. Averback

Research output: Contribution to journal › Article › peer-review

Abstract

Radiation-enhanced precipitation of W has been investigated in dilute Cu-W alloys. While spherical W precipitates are stabilized during irradiation below ∼ 300 °C and above ∼ 600 °C, irradiation at 500 °C results in the formation of nanorods. Furthermore, use of two-step irradiations, first one at 600 °C followed by one at 500 °C, indicates that the morphological transformation is reversible. The stabilization of W nanorods is rationalized using a model introduced by Frost and Russell to explain size stabilization of precipitates formed during irradiation, but extended here to consider precipitate morphology.

Original language	English (US)
Pages (from-to)	155-158
Number of pages	4
Journal	Scripta Materialia
Volume	115
DOIs	https://doi.org/10.1016/j.scriptamat.2016.01.012
State	Published - Apr 1 2016

Keywords

Ion irradiation
Precipitate morphology
Radiation-enhanced diffusion
Self-organization

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Online availability

10.1016/j.scriptamat.2016.01.012

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title = "Irradiation-induced formation of nanorod precipitates in a dilute Cu-W alloy",

abstract = "Radiation-enhanced precipitation of W has been investigated in dilute Cu-W alloys. While spherical W precipitates are stabilized during irradiation below ∼ 300 °C and above ∼ 600 °C, irradiation at 500 °C results in the formation of nanorods. Furthermore, use of two-step irradiations, first one at 600 °C followed by one at 500 °C, indicates that the morphological transformation is reversible. The stabilization of W nanorods is rationalized using a model introduced by Frost and Russell to explain size stabilization of precipitates formed during irradiation, but extended here to consider precipitate morphology.",

keywords = "Ion irradiation, Precipitate morphology, Radiation-enhanced diffusion, Self-organization",

author = "Shipeng Shu and Xuan Zhang and Beach, {John A.} and Pascal Bellon and Averback, {Robert S.}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

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day = "1",

doi = "10.1016/j.scriptamat.2016.01.012",

language = "English (US)",

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T1 - Irradiation-induced formation of nanorod precipitates in a dilute Cu-W alloy

AU - Shu, Shipeng

AU - Zhang, Xuan

AU - Beach, John A.

AU - Bellon, Pascal

AU - Averback, Robert S.

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Radiation-enhanced precipitation of W has been investigated in dilute Cu-W alloys. While spherical W precipitates are stabilized during irradiation below ∼ 300 °C and above ∼ 600 °C, irradiation at 500 °C results in the formation of nanorods. Furthermore, use of two-step irradiations, first one at 600 °C followed by one at 500 °C, indicates that the morphological transformation is reversible. The stabilization of W nanorods is rationalized using a model introduced by Frost and Russell to explain size stabilization of precipitates formed during irradiation, but extended here to consider precipitate morphology.

AB - Radiation-enhanced precipitation of W has been investigated in dilute Cu-W alloys. While spherical W precipitates are stabilized during irradiation below ∼ 300 °C and above ∼ 600 °C, irradiation at 500 °C results in the formation of nanorods. Furthermore, use of two-step irradiations, first one at 600 °C followed by one at 500 °C, indicates that the morphological transformation is reversible. The stabilization of W nanorods is rationalized using a model introduced by Frost and Russell to explain size stabilization of precipitates formed during irradiation, but extended here to consider precipitate morphology.

KW - Ion irradiation

KW - Precipitate morphology

KW - Radiation-enhanced diffusion

KW - Self-organization

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DO - 10.1016/j.scriptamat.2016.01.012

M3 - Article

AN - SCOPUS:84960472766

SN - 1359-6462

VL - 115

SP - 155

EP - 158

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Irradiation-induced formation of nanorod precipitates in a dilute Cu-W alloy

Abstract

Keywords

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