Learn about the strengthening by addition and the atomic arrangements in metals.
Size Factor
Full Code
MET0202220
Module Type
E-learning
Description
Clearly, the strength increase will be greater if there is extensive solid solution of one element in Fe as well as a large size difference between the atoms. However, this approach only treats the difference in size between the atoms, but there are other differences which need to be taken into account. The effect of size and other factors that can change the mechanical properties of steel is specially important. In this module the crystal lattice distortion will be explained. Then, the solutes and dislocations interactions will be introduced in detail and the stress field effect will be analysed. At the end of second section we will learn how substitutional solutes affect strength increase. Finally, other factors that affect strength increment will be outlined.
What you will learn
- Explain the following concepts:
Size Factor;
Distortion of the Crystal Lattice because of Atomic Size;
The influence of Solute Size factor.
- Outline the effect of other factors that characterise the differences between the atoms.
Module content
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