Comparison of jetting-related microstructures associated with hypervelocity impact crater formation in copper targets and copper shaped charges
作者： LE Murr , C-S Niou , EP Garcia , E Ferreyra , TJM Rivas
DOI: 10.1016/S0921-5093(96)10518-9
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摘要: Abstract Shaped charge jet and slug formation is characterized prominently by dynamic recrystallization which may occur in deformation-recrystallization cycles, providing a mechanism for extreme plastic flow jetting. There was no evidence melting or melt-related phenomena. Hypervelocity impact crater development also dominated narrow zone where target material jetted into the rim. The rim can particulate velocity gradients along jetting just like shaped jet. Like charge, there significant melt phenomenon associated with cratering process, plastic, high-strain-rate occurs solid state. Microbands are created removed from wall copper targets response to hypervelocity which, deformation twins, coincident trace of primary 111 planes. Their density extent increase both grain size. Neither microbands nor twins observed recovered fragments.
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