An introduction to Particle Strengthening from the point of view of crystal structure together with the Orowan equation. At the end, an empirical approach will be shown to compare it to the Orowan equation.
Introduction
Full Code
MET0204205
Module Type
E-learning
Description
In this course, the principles underlying strengthening by particles are reviewed and applied to steels.
A knowledge of the line tension and the orientation of a dislocation line is also essential. Whilst some familiarity of crystal structure is needed, concepts relating to particle/matrix interfaces are introduced. Before starting, it is important that you are familiar with the following terms: Yield stress; Crystal system; Dislocation; Burgers vector; Transmission Electron Microscopy (External site); Stress field; Work hardening;
You should be familiar with the concepts covered in: Tensile Test
What you will learn
- Describe the relationship of microalloyed steels and the alloy carbides with strengthening;
- Explain the role of particle size and spacing in the precipitation strengthening;
- Analyse the principle of functioning of TEM together with an image.
Module content
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