8.7 The following tabuleted data were gathered from a series of Charpy impact rests on a tempered 4340 steel alloy Tempe

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8 7 The Following Tabuleted Data Were Gathered From A Series Of Charpy Impact Rests On A Tempered 4340 Steel Alloy Tempe 1 (16.54 KiB) Viewed 21 times

8.7 The following tabuleted data were gathered from a series of Charpy impact rests on a tempered 4340 steel alloy Temperature (0) 0 Impact Energy (1) 105 104 -25 -50 103 -75 97 -100 63 40 -113 -125 -150 34 28 25 -175 -200 24 (a) Plot the data as impact energy versus temperature 6) Determine a ductile-to-brittle transition temperature as the temperature corresponding to the average of the maximum and minimum impact energies (c) Determine a ductile-to-brittle transition temperature as the temperature at which the impact energy is