Defect evolution in heavy ion irradiated nanotwinned Cu with nanovoids

JOURNAL OF NUCLEAR MATERIALS

卷:496

Article

Fan, C.¹  Chen, Y.²  Li, Jin¹  Ding, Jie¹  Wang, H.^1,3  Zhang, X.¹ 

[1] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA

[2] Los Alamos Natl Lab, MPA CINT, Los Alamos, NM 87545 USA

[3] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 57907 USA

关键词: Nanotwins;    Nanovoids;    Radiation damage;    In situ TEM;   

DOI  :  10.1016/j.jnucmat.2017.09.031

来源: Elsevier

【 摘 要 】

Epitaxial nanotwinned Cu film with abundant nanovoids surrounding domain boundaries was subjected to Kr++ ion irradiation inside a transmission electron microscope at various dose rates. Irradiation-induced defect clusters distributed preferentially near domain boundaries during the early stage of radiation. Meanwhile, the pre-existing nanovoids continuously shrank. This study suggests that the defect network enabled by the unique combination of nanotwins and nanovoids may significantly enhance the radiation tolerance of metallic materials. Published by Elsevier B.V.

【 授权许可】

Free