Texture evolution in nanocrystalline Cu under shock compression

SC Hu and JW Huang and ZY Zhong and YY Zhang and Y Cai and SN Luo, JOURNAL OF APPLIED PHYSICS, 127 (2020).

DOI: 10.1063/5.0006713

We investigate with large-scale molecular dynamics simulations texture evolution in nanocrystalline Cu under planar shock wave loading. Five representative initial textures are explored under varying impact strengths. On the basis of Euler angles, we perform orientation mapping and texture analysis, including orientation distribution functions, pole figures, and inverse pole figures. Shock compression induces a weak but apparent 110 textures in nanocrystalline Cu initially with no texture, and a 100 fiber texture, and an incomplete weak 110 texture in nanocrystalline Cu initially with a 100 100 recrystallization texture; such texture changes can be attributed to deformation twinning and dislocation slip and traced back to grains initially with 100 . A 100 texture and a 100 100 cube texture component are induced via twinning in nanocrystalline Cu initially with the 111 and beta fiber textures, respectively, and can be traced back to grains initially with 111 .

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