Microstructural changes in a neutron-irradiated Fe-15 at.%Cr alloy

被引：51

作者：

Bachhav, Mukesh ^{[1
]}

Odette, G. Robert ^{[2
]}

Marquis, Emmanuelle A. ^{[1
]}

机构：

[1] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 2014年 / 454卷 / 1-3期

关键词：

RADIATION-INDUCED SEGREGATION; AUSTENITIC STAINLESS-STEELS; FERRITIC-MARTENSITIC STEELS; GRAIN-BOUNDARY SEGREGATION; MODEL ALLOYS; NONEQUILIBRIUM SEGREGATION; FERRITIC/MARTENSITIC STEEL; INDUCED PRECIPITATION; SOLUTE SEGREGATION; LOW PURITY;

D O I：

10.1016/j.jnucmat.2014.08.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructural changes in a Fe-15 at.%Cr model alloy neutron irradiated to 1.82 dpa at 290 degrees C were characterized by atom probe tomography. Homogenously distributed alpha' precipitates as well as fewer clusters containing Si, P, Ni, and Cr, were observed in the matrix. Grain boundary analyses before and after irradiation revealed segregation of Cr, with W-shape concentration profiles developing in the vicinity of grain boundary carbide and nitride particles. After irradiation, impurities such as C, Si and P were segregated to the grain boundaries. Zones depleted of alpha' clusters, and Si were found at the interfaces of carbide and nitride precipitates and along grain boundaries in the vicinity of these precipitates. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：381 / 386

页数：6

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