You have rolled copper sheets (one by 50%, the other by 90%) and recrystallized samples from...
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You have rolled copper sheets (one by 50%, the other by 90%) and recrystallized samples from them at 650\deg C and 700\deg C for the same length of time. a) Sketch the appearance of the four microstructures in comparison and justify your answer. b) Schematically draw the course of the hardness over the annealing time for the two mentioned degrees of deformation in comparison. c) Schematically draw the course of the hardness over the annealing time for the two mentioned temperatures in comparison. d) Name three preferred nucleation sites for primary recrystallization. Explain why these sites are preferred. You have rolled copper sheets (one by 50%, the other by 90%) and recrystallized samples from them at 650\deg C and 700\deg C for the same length of time. a) Sketch the appearance of the four microstructures in comparison and justify your answer. b) Schematically draw the course of the hardness over the annealing time for the two mentioned degrees of deformation in comparison. c) Schematically draw the course of the hardness over the annealing time for the two mentioned temperatures in comparison. d) Name three preferred nucleation sites for primary recrystallization. Explain why these sites are preferred.
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Microstructure Evolution and Hardness Changes in Recrystallized Copper Sheets a Microstructure Appearance Comparison Initial Microstructure 50 rolled ... View the full answer
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