Helium bubble evolution in ion irradiated Al/B4C metal metrix composite

SCRIPTA MATERIALIA

卷:109

Article

Zhang, Feifei^1,2  Wang, Xu^1,2  Wierschke, Jonathan B.¹  Wang, Lumin^1,2 

[1] Xiamen Univ, Coll Energy, Xiamen 361102, Fujian, Peoples R China

[2] Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA

关键词: Interface defects;    Ceramics;    Metal matrix composites;    Transmission electron microscopy;    Helium bubble;   

DOI  :  10.1016/j.scriptamat.2015.07.011

来源: Elsevier

【 摘 要 】

Helium behavior in Al/B4C metal matrix composite with two different sets of ion irradiation conditions has been investigated by transmission electron microscopy. Helium bubbles in Al were found to be much larger than those in B4C after a helium fluence of 1.5 x 10(17) ions/cm(2) at the room temperature. Also, bubbles at grain boundaries and their vicinity in aluminum are faceted. With additional proton irradiation, a bubble denuded zone along the aluminum grain boundary appears. The results are discussed in terms of the energetics of the material system. (C) 2015 Published by Elsevier Ltd. on behalf of Acta Materialia Inc.

【 授权许可】

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