DP steels contain islands of hard martensitic second phase in a ferritic matrix. Steel strength improves when the volume fraction of hard second phases increases. The formation of DP steels involves ...

The micrographs below show the effect of annealing at different temperatures on a sample of Fe - 0.7 wt % C steel in which martensite has been formed by quenching. Because of the low carbon content ...

The component elements in steel can be categorised in terms of their crystal structures. At least a basic knowledge of the practical implications of these crystal arrangements is essential to ...

The transition from austenite to phases stable at lower temperatures also takes place when the material is cooled at a constant rate. The diagram illustrates the transition zone (yellow) and also ...