Defects induced by helium ion irradiation in aluminum alloys

被引：6
作者：
Soria, S. R. [1 ,3 ]
Tolley, A. J. [1 ,3 ]
Sanchez, E. A. [2 ,3 ]
机构：
[1] Ctr Atom Bariloche, Div Fis Met, CNEA, Ave E Bustillo 9500, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
[2] Ctr Atom Bariloche, Div Colis Atom & Fis Superficies, CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
[3] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina
来源：
INTERNATIONAL CONGRESS OF SCIENCE AND TECHNOLOGY OF METALLURGY AND MATERIALS, SAM - CONAMET 2013 | 2015年 / 8卷
关键词：
Radiation damage; helium ion irradiation; TEM; SEM; AFM; BUBBLES; METALS; ENERGY;
D O I：
10.1016/j.mspro.2015.04.100
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ion irradiation experiments were carried out on pure Al and on a solid solution of Al-wt. 4% Cu in order to study the influence of composition on the irradiation effects. The experiments were carried out with a 20 keV He ions at room temperature up to a maximum fluence of about 1.5 x 10(17) ions.cm(-2). The changes in the microstructure were analyzed by transmission electron microscopy (TEM) and the evolution of the irradiated surface was studied combining scanning electron microscopy (SEM) and atomic force microscopy (AFM). In pure Al, homogeneous blistering was observed and small He bubbles with diameters in the range of 1 to 2 nm were formed in the bulk, close to the irradiated surface. In Al-Cu no He bubbles were observed following irradiation. However, after subsequent annealing at 250 degrees C, a homogeneous distribution of He bubbles was observed in the bulk, together with larger bubbles located on the interfaces between the matrix and equilibrium. phase (Al2Cu) precipitates. (C) 2015 The Authors. Published by Elsevier Ltd.
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收藏
页码：486 / 493
页数：8
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