In situ TEM investigation of amorphization and recrystallization of Zr(Fe,Cr,Nb)2 precipitates under Ne ion irradiation

被引：18
|
作者：
Shen, H. H. [1 ,2 ]
Zhang, J. M. [1 ,3 ]
Peng, S. M. [4 ]
Xiang, X. [1 ]
Sun, K. [2 ]
Zu, X. T. [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China
[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA
[4] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China
来源：
VACUUM | 2014年 / 110卷
基金：
中国国家自然科学基金;
关键词：
Zirconium alloy; Zr(Fe; Cr; Nb)(2); Recrystallization; Amorphization; In situ investigation; FE-CR ALLOY; TRANSMISSION ELECTRON-MICROSCOPY; NEUTRON-IRRADIATION; PROTON IRRADIATION; ZIRCALOY-4; ZR; MICROSTRUCTURE; ZIRCONIUM; PHASE; RESISTANCE;
D O I：
10.1016/j.vacuum.2014.08.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The behavior of the Zr(Fe,Cr,Nb)(2) precipitate in a China-brand Zr-Sn-Nb-Fe-Cr alloy under a 500 key Ne ion beam irradiation and post heating were studied by in-situ transmission electron microscopy (TEM). It is found that the Zr(Fe,Cr,Nb)(2) precipitate with the hexagonal close packed (hcp) structure is the major secondary phase particle (SPP) in this zirconium alloy. At the temperature of 310 degrees C, the precipitate starts to be amorphized after having been irradiated to 0.5 displacement per atom (dpa). The critical irradiation dose for the precipitate to be completely amorphized is 1.0 dpa. The amorphized Zr(Fe,Cr,Nb)(2) precipitate starts to be recrystallized when it was heated up to 600 degrees C. The temperature for the recrystallization of the amorphized Zr(Fe,Cr,Nb)(2) precipitate is determined to be between 450 degrees C and 600 degrees C. Instead of forming large single grain crystals, some nanocrystals that have the same crystal structure to that of the precipitate before being amorphized were formed during the recrystallization. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：24 / 29
页数：6
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