Brick by brick, nuclear fusion is getting closer to reality. In a study published in late January, scientists from Virginia Polytechnic Institute and State University and the Pacific Northwest National Laboratory (PNNL) investigated how the strength of tungsten might be improved. The idea of the American researchers: to reinforce, through an alloy of nickel and iron, the ductility of tungsten, that is to say its ability not to break when a force is applied to it. This so-called heavy alloy, which copies the structure, at the nanometric scale, of a shell, might be used in nuclear fusion reactors.
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