Journal ArticleDOI
Laser-induced shock compression of monocrystalline copper: characterization and analysis
Marc A. Meyers,Fabienne Grégori,Bimal K. Kad,M. S. Schneider,Daniel H. Kalantar,Bruce Remington,Guruswami Ravichandran,T. R. Boehly,Justin Wark +8 more
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TLDR
In this paper, a method for estimating dislocation densities is proposed, based on nucleation of loops at the shock front and their extension due to residual shear stresses behind the front.About:
This article is published in Acta Materialia.The article was published on 2003-03-14. It has received 219 citations till now. The article focuses on the topics: Slip (materials science) & Crystal twinning.read more
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Deformation twinning in nanocrystalline materials
TL;DR: In this paper, a review of deformation twinning in nanocrystalline materials is presented, including deformation twins observed by molecular dynamics simulations and experiments, twinning mechanisms, factors affecting the twinning, analytical models on the nucleation and growth of deformations, interactions between twins and dislocations, and the effects of twins on mechanical and other properties.
Journal ArticleDOI
Grain refinement mechanism of multiple laser shock processing impacts on ANSI 304 stainless steel
Jin Zhon Lu,Kaiyu Luo,Yong Kang Zhang,Sun Guifang,Y.Y. Gu,Jianzhong Zhou,Xu Dong Ren,Xian-Cheng Zhang,Ling Feng Zhang,K.M. Chen,C.Y. Cui,Y.F. Jiang,A.X. Feng,Lai-Chang Zhang +13 more
TL;DR: In this article, the micro-structural evolution and grain refinement in ANSI 304 stainless steel subjected to multiple laser shock processing (LSP) impacts were investigated by means of cross-sectional optical microscopy and transmission electron microscopy observations.
Journal ArticleDOI
Grain refinement of LY2 aluminum alloy induced by ultra-high plastic strain during multiple laser shock processing impacts
J.Z. Lu,Kaiyu Luo,Y.K. Zhang,C.Y. Cui,Sun Guifang,Jun Zhou,Lai-Chang Zhang,J. You,K.M. Chen,J.W. Zhong +9 more
TL;DR: In this article, the plastic deformation behavior and the effects of the impact time on the LY2 aluminum (Al) alloy during multiple laser shock processing (LSP) impacts were investigated.
Journal ArticleDOI
Void growth by dislocation emission
TL;DR: In this paper, a criterion for the emission of a dislocation from the surface of a void under remote tension is formulated, analogous to Rice and Thomsons criterion for crack blunting by dislocation emission from the crack tip.
Journal ArticleDOI
Ultrahigh Strength in Nanocrystalline Materials Under Shock Loading
Eduardo M. Bringa,Eduardo M. Bringa,Alfredo Caro,Alfredo Caro,Yinmin Wang,Yinmin Wang,Maximo Victoria,Maximo Victoria,James McNaney,James McNaney,Bruce Remington,Bruce Remington,Raymond F. Smith,Raymond F. Smith,Ben Torralva,Ben Torralva,Helena Van Swygenhoven,Helena Van Swygenhoven +17 more
TL;DR: Molecular dynamics simulations of nanocrystalline copper under shock loading show an unexpected ultrahigh strength behind the shock front, with values up to twice those at low pressure.
References
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Micromechanical strength effects in shock compression of solids
TL;DR: In this paper, the elastic precursor, plastic loading wave, pulse duration, release wave, and post-mortem examination were examined for weak shocks, with emphasis on the second and fourth elements.