What was the difference between 

• the length of the Al 6063 sample while the force in question 2(c) is being applied, and
• the length of the Al 6063 sample after the force in question 2(c) has been released?

In other words, how much did the specimen retract once the force was removed?

Give your answer in mm, to at least 2 significant figures

What was the elastic modulus for the Al 6063 sample that you determined in question 2(b)?

Give your answer in GPa, to at least two significant figures

FDM is a type of 3D printing that can be used for ...

A dislocation is ...

Which of the following are important to consider when using FDM printing to produce an object? (choose one or more answers)

Choose the statement which is TRUE

Additive manufacturing (choose one or more answers that are TRUE)...

Which of the following best describes the process of work hardening of metals.