Stability of Nanoclusters in an Oxide Dispersion Strengthened Alloy Under Neutron Irradiation

Xiang Liu; Yinbin Miao; Yaqiao Wu; Stuart A. Maloy; James F. Stubbins

doi:10.1016/j.scriptamat.2017.05.023

Stability of Nanoclusters in an Oxide Dispersion Strengthened Alloy Under Neutron Irradiation

Xiang Liu, Yinbin Miao, Yaqiao Wu, Stuart A. Maloy, James F. Stubbins

Research and Economic Development

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

19 Scopus citations

Abstract

Here, we report atom probe tomography results of the nanoclusters in a neutron-irradiated oxide dispersion strengthened alloy. Following irradiation to 5 dpa at target temperatures of 300 °C and 450 °C, fewer large nanoclusters were found and the residual nanoclusters tend to reach an equilibrium Guinier radius of 1.8 nm. With increasing dose, evident decrease in peak oxygen and titanium (but not yttrium) concentrations in the nanoclusters was observed, which was explained by atomic weight, solubility, diffusivity, and chemical bonding arguments. The chemical modifications indicate the equilibrium size is indeed a balance of two competing processes: radiation enhanced diffusion and collisional dissolution.

Original language	American English
Pages (from-to)	57-61
Number of pages	5
Journal	Scripta Materialia
Volume	138
DOIs	https://doi.org/10.1016/j.scriptamat.2017.05.023
State	Published - Sep 2017

Keywords

Atom probe tomography
Microstructure
Neutron irradiation
Oxide dispersion strengthened (ODS) alloy

EGS Disciplines

Materials Science and Engineering

Access to Document

10.1016/j.scriptamat.2017.05.023

Cite this

@article{345e111824b148f5b49f1b064f87123b,

title = "Stability of Nanoclusters in an Oxide Dispersion Strengthened Alloy Under Neutron Irradiation",

abstract = " Here, we report atom probe tomography results of the nanoclusters in a neutron-irradiated oxide dispersion strengthened alloy. Following irradiation to 5 dpa at target temperatures of 300 °C and 450 °C, fewer large nanoclusters were found and the residual nanoclusters tend to reach an equilibrium Guinier radius of 1.8 nm. With increasing dose, evident decrease in peak oxygen and titanium (but not yttrium) concentrations in the nanoclusters was observed, which was explained by atomic weight, solubility, diffusivity, and chemical bonding arguments. The chemical modifications indicate the equilibrium size is indeed a balance of two competing processes: radiation enhanced diffusion and collisional dissolution.",

keywords = "Atom probe tomography, Microstructure, Neutron irradiation, Oxide dispersion strengthened (ODS) alloy",

author = "Xiang Liu and Yinbin Miao and Yaqiao Wu and Maloy, {Stuart A.} and Stubbins, {James F.}",

note = "Publisher Copyright: {\textcopyright} 2017 Acta Materialia Inc.",

year = "2017",

month = sep,

doi = "10.1016/j.scriptamat.2017.05.023",

language = "American English",

volume = "138",

pages = "57--61",

}

TY - JOUR

T1 - Stability of Nanoclusters in an Oxide Dispersion Strengthened Alloy Under Neutron Irradiation

AU - Liu, Xiang

AU - Miao, Yinbin

AU - Wu, Yaqiao

AU - Maloy, Stuart A.

AU - Stubbins, James F.

PY - 2017/9

Y1 - 2017/9

N2 - Here, we report atom probe tomography results of the nanoclusters in a neutron-irradiated oxide dispersion strengthened alloy. Following irradiation to 5 dpa at target temperatures of 300 °C and 450 °C, fewer large nanoclusters were found and the residual nanoclusters tend to reach an equilibrium Guinier radius of 1.8 nm. With increasing dose, evident decrease in peak oxygen and titanium (but not yttrium) concentrations in the nanoclusters was observed, which was explained by atomic weight, solubility, diffusivity, and chemical bonding arguments. The chemical modifications indicate the equilibrium size is indeed a balance of two competing processes: radiation enhanced diffusion and collisional dissolution.

AB - Here, we report atom probe tomography results of the nanoclusters in a neutron-irradiated oxide dispersion strengthened alloy. Following irradiation to 5 dpa at target temperatures of 300 °C and 450 °C, fewer large nanoclusters were found and the residual nanoclusters tend to reach an equilibrium Guinier radius of 1.8 nm. With increasing dose, evident decrease in peak oxygen and titanium (but not yttrium) concentrations in the nanoclusters was observed, which was explained by atomic weight, solubility, diffusivity, and chemical bonding arguments. The chemical modifications indicate the equilibrium size is indeed a balance of two competing processes: radiation enhanced diffusion and collisional dissolution.

KW - Atom probe tomography

KW - Microstructure

KW - Neutron irradiation

KW - Oxide dispersion strengthened (ODS) alloy

UR - http://www.scopus.com/inward/record.url?scp=85020030029&partnerID=8YFLogxK

UR - https://scholarworks.boisestate.edu/mse_facpubs/316

U2 - 10.1016/j.scriptamat.2017.05.023

DO - 10.1016/j.scriptamat.2017.05.023

M3 - Article

SN - 1359-6462

VL - 138

SP - 57

EP - 61

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Stability of Nanoclusters in an Oxide Dispersion Strengthened Alloy Under Neutron Irradiation

Abstract

Keywords

EGS Disciplines

Access to Document

Other files and links

Fingerprint

Cite this