Mechanical engineering

Mechanical engineering

Terms related to the discipline of engineering that applies the principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems.

Industry: Engineering

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Mechanical engineering

Extrinsic Defects

Materials science; Metallurgy

The extrinsic point defects are foreign atoms, which are called solutes if they are intentionally added to the material and are called impurities if they are not. The foreign atom may occupy a ...

Screw Dislocations

Materials science; Metallurgy

Dislocations in which the Burgers vector is perpendicular to the dislocation line. Dislocations in real crystals rarely have a pure edge character. Their Burgers vectors lie at various angles to ...

Surface Defects

Materials science; Metallurgy

Surface defects plastically deform the surface of the material. Surface defects are as follows. cracks , grooves , damages , slags , scabs and corrosion.

Intrinsic Defects

Materials science; Metallurgy

An intrinsic defect is formed when an atom is missing from a position that ought to be filled in the crystal, creating a vacancy, or when an atom occupies an interstitial site where no atom would ...

Line Defects

Materials science; Metallurgy

Line defects, or dislocations, are lines along which whole rows of atoms in a solid are arranged anomalously. The resulting irregularity in spacing is most severe along a line called the line of ...

Point defects are where an atom is missing or is in an irregular place in the lattice structure. Point defects include self interstitial atoms, interstitial impurity atoms, substitutional atoms and ...

Isothermal Annealing

Materials science; Metallurgy

In this process,hypoeutectoid steel is heated above the upper critical temperature and held for some time at this temperature.This is done in order to get a completely austenitic structure and to ...