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
收藏
页码：35 / 42
页数：8
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