Spall in Aluminium with Helium Bubbles under Laser Shock Loading
Da-Wu Xiao1** , Li-Feng He1 , Ping Zhou1 , Dong-Li Zou1 , Hua Shu2
1 Institute of Materials, China Academy of Engineering Physics, Mianyang 6217002 Institute of Laser, China Academy of Engineering Physics, Mianyang 621700
Abstract ：The spallation behaviors of Al+0.2 wt% $^{10}$B targets and neutron irradiated Al+0.2 wt% $^{10}$B targets with 5 nm radius helium bubble subjected to direct laser ablation are presented. It is found that the spall strength increases significantly with the tensile strain rate, and the helium bubble or boron inclusions in aluminum reduces the spall strength of materials by 34%. However, slight difference is observed in the spall strength of unirradiated samples compared with the irradiated sample with helium bubbles.
收稿日期: 2016-12-02
出版日期: 2017-04-29
:
62.50.-p
(High-pressure effects in solids and liquids)
62.50.Ef
(Shock wave effects in solids and liquids)
62.20.mm
(Fracture)
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2017, Vol. 34 
