Irradiation-induced precipitation in V-4Cr-4Ti alloys studied using three-dimensional atom probe

被引：9

作者：

Hatakeyama, M. ^{[1
]}

Nagasaka, T. ^{[2
]}

Muroga, T. ^{[2
]}

Toyama, T. ^{[1
]}

Yamagata, I. ^{[3
]}

机构：

[1] Tohoku Univ, IMR, Int Res Ctr Nucl Mat Sci, Oarai, Ibaraki 3111313, Japan

[2] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

[3] Japan Atom Energy Agcy, Oarai, Ibaraki 3111393, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2013年 / 442卷 / 1-3期

关键词：

VANADIUM ALLOYS;

D O I：

10.1016/j.jnucmat.2013.01.320

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To investigate neutron irradiation effects on the precipitation behavior of Ti(O,N,C) in V-4Cr-4Ti alloy, chemical and structural analyses were conducted using a laser-assisted local electrode three-dimensional atom probe. Ti(O, N, C) precipitates were observed after irradiation at 333 and 673 K. These NaCl-type precipitates mostly consisted of V, Ti, Cr, O, and C. The chemical composition of the precipitate was estimated as about V39Cr2Ti5CO3 at both irradiation temperatures. This result suggests that most of the Ti sublattice presumed to be replaced by V and O, N, and C sublattice are instead occupied by vacancies. Therefore, compositionally modified V39Cr2Ti5CO3 precipitates might form with larger volume fractions than TiO precipitates. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：S346 / S349

页数：4

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