Quiz - Al-Cu alloys question 1 of 7
Q1: the proportions of the two phases present in the eutectic mixture are:

alpha:theta 2:3

alpha:theta 1:3

alpha:theta 3:1

none of the above
Quiz - Al-Cu alloys question 2 of 7
Q2: the proportion of the phases present in Al-20%Cu is approximately:

alpha:theta 1:2

alpha:theta 2:1

alpha:theta 1:1

none of the above
Quiz - Al-Cu alloys question 3 of 7
Q3: the proportion of primary alpha in Al-20%Cu is approximately:

alpha:eutectic 1:1

alpha:eutectic 1:2

alpha:eutectic 2:1

none of the above
Quiz - Al-Cu alloys question 4 of 7
Q4: after slow cooling to room temperature the Al-40%Cu alloy microstructure will consist of:

a eutectic mixture of alpha and theta

primary alpha along with eutectic mixture of alpha and theta

primary theta along with eutectic mixture of alpha and theta

none of the above
Quiz - Al-Cu alloys question 5 of 7
Q5: which of the following alloys solidify over a range of temperatures:

Al-3%Cu

Al-33%Cu

Al-54%Cu

Pure Al
Quiz - Al-Cu alloys question 6 of 7
Q6: in the Al-20%Cu alloy, does the first solid which forms on cooling contain:

20% Cu

Less than 20% Cu

More than 20% Cu

No Cu (i.e. pure Al)
Quiz - Al-Cu alloys question 7 of 7
Q7: during slow cooling an Al-3%Cu alloy becomes fully solidified at:

650 °C

600 °C

500 °C

none of the above