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Attribution-
NonCommercial-ShareAlike 4.0 International
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Box
Tensile specimen
Pouring liquid nitrogen into box.
(i) Copper Specimen
Fractured sample
Copper gives a fracture surface showing ductile behaviour
at 77 K.
500µm
(ii) Steel Specimen
Fractured sample
Steel gives a fracture surface showing brittle behaviour
at 77 K.