The iron – carbon system, phase transformations
A study of iron-carbon system is useful and important in many respects. This is because (1) steels constitute greatest amount of metallic materials used by man (2) solid state transformations…
Kinetics of nucleation and growth
Structural changes in metallic systems usually take place by nucleation and growth whether it is just a phase change within one of the three states, or a simple structural rearrangement…
Particle strengthening by precipitation and precipitation reactions
As explained in an earlier chapter (chapter-6: Dislocations and Strengthening Mechanisms), by obstructing dislocation motion in different means, material’s strength can be increased. One of the methods that are applicable…
Intermediate phases:
An intermediate phase may occur over a composition range (intermediate solid solution) or at a relatively fixed composition (compound) inside the phase diagram and are separated from other two phases…
Eutectic system:
Many binary systems have components which have limited solid solubility, e.g.: Cu-Ag, Pb-Sn. The regions of limited solid solubility at each end of a phase diagram are called terminal solid…
Binary diagrams:
These diagrams constitutes two components, e.g.: two metals (Cu and Ni), or a metal and a compound (Fe and Fe3C), or two compounds (Al2O3 and Si2O3), etc. In most engineering applications,…
Equilibrium Phase Diagrams
A diagram that depicts existence of different phases of a system under equilibrium is termed as phase diagram. It is also known as equilibrium or constitutional diagram. Equilibrium phase diagrams…
Phase Diagrams
Many of the engineering materials possess mixtures of phases, e.g. steel, paints, and composites. The mixture of two or more phases may permit interaction between different phases, and results in…
Why compact spinning?
In conventional ring spinning, fibres in the selvedge of strand emerging from front roller nip do not get fully integrated into the yarn because of the restriction to twist flow…
Accessories for Ring Spinning
In the course of processing staple fibers on spinning machines, many short fibers are lost as fly and a considerable quantity of fiber particles and dust is released. Dust and…
