Monolayer-thick TiO precipitation in V-4Cr-4Ti alloy induced by proton irradiation

被引：20

作者：

Impagnatiello, A. ^{[1
,2
]}

Shubeita, S. M. ^{[2
]}

Wady, P. T. ^{[2
]}

Ipatova, I. ^{[1
,2
]}

Dawson, H. ^{[1
]}

Barcellini, C. ^{[1
,2
]}

Jimenez-Melero, E. ^{[1
,2
]}

机构：

[1] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

[2] Univ Manchester, Dalton Cumbrian Facil, Westlakes Sci & Technol Pk, Moor Row CA24 3HA, England

来源：

SCRIPTA MATERIALIA | 2017年 / 130卷

基金：

英国工程与自然科学研究理事会;

关键词：

Refractory metal; Precipitation; Lattice defects; High-resolution electron microscopy; Nuclear fusion reactor; VANADIUM ALLOYS; MICROSTRUCTURAL EVOLUTION; STRUCTURAL-MATERIALS; NEUTRON; TEMPERATURE; BEHAVIOR; DAMAGE; DEPENDENCE; RECOVERY;

D O I：

10.1016/j.scriptamat.2016.12.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have characterised to atomic resolution the mono-layer thick TiO-type precipitate induced by proton irradiation in V-4Cr-4Ti alloy at a dose of 03 dpa and a temperature of 350 degrees C. Its formation coincides with the coarsening radiation-induced interstitial a/2 < 111 > dislocation loops that are already present at 300 degrees C. The dislocation network induced by prior cold work is mostly recovered at 300 C and 0.3 dpa, and is therefore expected to exert a minimal effect on the precipitate formation. This monolayer-thick precipitate constitutes an early stage in the radiation-induced aging process of V-4Cr-4Ti at low temperatures, and can potentially absorb additional light elements in reactor environments. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：174 / 177

页数：4

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