In situ Observation of Defect Annihilation in Kr Ion-Irradiated Bulk Fe/Amorphous-Fe2Zr Nanocomposite Alloy

被引：19

作者：

Yu, K. Y. ^{[1
,2
]}

Fan, Z. ^{[3
]}

Chen, Y. ^{[2
]}

Song, M. ^{[2
]}

Liu, Y. ^{[2
]}

Wang, H. ^{[4
]}

Kirk, M. A. ^{[5
]}

Li, M. ^{[6
]}

Zhang, X. ^{[2
,3
]}

机构：

[1] China Univ Petr, Dept Mat Sci & Engn, Beijing 102249, Peoples R China

[2] Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA

[3] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA

[4] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA

[5] Argonne Natl Lab, Mat Sci Div, Argonne, IL 60439 USA

[6] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA

来源：

MATERIALS RESEARCH LETTERS | 2015年 / 3卷 / 01期

基金：

美国国家科学基金会;

关键词：

Defect Cluster; Heavy Ion Irradiation; Absorption; Annihilation; HE ION; MECHANICAL-PROPERTIES; RADIATION-DAMAGE; TOLERANCE; MULTILAYERS; REDUCTION; PHASES;

D O I：

10.1080/21663831.2014.951494

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Enhanced irradiation tolerance in crystalline multilayers has received significant attention lately. However, little is known on the irradiation response of crystal/amorphous nanolayers. We report on in situ Kr ion irradiation studies of a bulk Fe96Zr4 nanocomposite alloy. Irradiation resulted in amorphization of Fe2Zr and formed crystal/amorphous nanolayers. alpha-Fe layers exhibited drastically lower defect density and size than those in large alpha-Fe grains. In situ video revealed that mobile dislocation loops in alpha-Fe layers were confined by the crystal/amorphous interfaces and kept migrating to annihilate other defects. This study provides new insights on the design of irradiation-tolerant crystal/amorphous nanocomposites.

引用

页码：35 / 42

页数：8

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