Tabulated are data that were gathered from a series of charpy impact tests on a tempered 4140 steel alloy.
temperature,
o
c
impact energy, j
100 89.3
75 88.6
50 87.6
25 85.4
0 82.9
-25 78.9
-50 73.1
-65 66
-75 59.3
-85 47.9
-100 34.3
-125 29.3
-150 27.1
-175 25
(a) plot the data as impact energy versus temperature.
(b) determine a ductile to brittle transition temperature corresponding to the average of the maximum and minimum impact energies.
(c) what is the minimum temperature at which you can use this steel if you wish to have at least 70 j of charpy impact energy?
Answers: 3
Chemistry, 21.06.2019 23:10
Which statement describes both homogeneous mixtures and heterogeneous mixtures?
Answers: 1
Chemistry, 22.06.2019 13:00
One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.
Answers: 1
Chemistry, 22.06.2019 19:00
What information does a complete ionic equation give that the balanced equation doesn’t show?
Answers: 1
Chemistry, 23.06.2019 00:30
•hydration •dissociation •dissolving which one goes to which
Answers: 1
Tabulated are data that were gathered from a series of charpy impact tests on a tempered 4140 steel...
Computers and Technology, 02.03.2020 17:46