1) Three samples of aluminium are subjected to a constant stress and the times required to produce a constant strain of 0.1% during steady state creep at different temperatures are shown in table 1 below.
|
Temperature (00C)
|
151
|
205
|
258
|
|
Time (hours)
|
100
|
1.0
|
0.028
|
Use this information to determine graphically.
(i) The temperature at which a strain of 0.1% is produced after 10 hours.
(ii) The activation energy for steady-state creep.