Radiation-hardening and nano-cluster formation in neutron-irradiated 9Cr-2W low activation steels with different Si contents

被引：13

作者：

Zhang, Y. F. ^{[1
]}

Zhan, Q. ^{[1
]}

Ohnuki, S. ^{[1
]}

Kimura, A. ^{[2
]}

Wan, F. R. ^{[1
]}

Yoshida, K. ^{[3
]}

Nagai, Y. ^{[3
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan

[3] Tohoku Univ, Oarai Ctr, Inst Mat Res, Oarai, Ibaraki 3111313, Japan

来源：

JOURNAL OF NUCLEAR MATERIALS | 2019年 / 517卷

基金：

美国国家科学基金会;

关键词：

Silicon; Dislocation loops; Radiation-enhanced nano-clusters; Radiation-hardening; Neutron irradiation; Ferritic and martensitic steels; G-PHASE; TENSILE PROPERTIES; STAINLESS-STEEL; BEHAVIOR; MICROSTRUCTURE; PRECIPITATION; EVOLUTION; SILICON; HARDNESS; ALLOYS;

D O I：

10.1016/j.jnucmat.2019.01.053

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two kinds of 9Cr-2W steels with and without the addition of 0.1 wt% Si were irradiated with neutrons up to a fluence of 4.8 x 10(23) n/m(2) at 563 K. Precipitates, dislocation loops, radiation-enhanced nano-clusters and radiation-hardening were studied using advanced electron microscopy and micro-hardness test. Si reduced the number density of dislocation loops, and therefore the extent of radiation-hardening decreased. It also favored the formation of silicide-like nano-clusters. In this study, the role of Si in neutron irradiated 9Cr-2W steels is discussed, and then extended to nano-clusters and irradiation-hardening. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：1 / 8

页数：8

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