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2. The table below shows the data obtained during the series of Charpy impact tests on a commercial low-carbon steel alloy. At the end

 

2. The table below shows the data obtained during the series of Charpy impact tests on a commercial low-carbon steel alloy. At the end of the test, it was discovered that there was error of 1.5 J in all the data obtained for the impact energies. i. ii. iii. Temperature (C) -120 -100 -80 -60 -40 -20 -10 0 10 24 30 40 50 60 70 80 100 120 Determine the actual/correct impact energies and tabulate them as above. Plot the data obtain in (i) as impact energy Vs Temperature graph and determine the ductile-brittle transition temperature (DBTT) S/N 1 2 3 4 Absorbed Energy (J) 8.5 8.7 8.9 9.2 9.5 10 16.5 26.5 36.5 51.5 59.5 66.5 78.5 86.5 94.5 96.5 97.5 98.5 5 6 7 8 9 10 11 12 13 14 15 16 17 18 At what range of temperatures is not advisable to use this material and briefly discuss why?

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