International School of Aerospace NDT Limited
Metallurgy for NDT
(40 hour/5 day Course)
This Course Comprises:
Atomic Nature of Materials: The crystal structure of metals, the growth of grains, the importance of grain size and the control of grain size.
Materials Processing: Casting: shrinkage, gas evolution, grain growth and equilibrium phase diagrams. Engineering castings, feeding moulds, summary of casting defects. Forging: Open die forging, closed die forging, directionality, finishing, defects in forging. Rolling: Blooms, slabs and billets. The rolling process, oxidation, dimensional accuracy, finishing and defects in rolling. Extrusion and drawing: drawing, deep drawing, extruding, drawing and extruding effects. Powder metallurgy: Competitive method, improvements over the other methods, methods, method production, powder, powder mixing, sintering, and isotatic pressure. Finish process: Machining processes, heat treatments and protective coatings.
Material Science: Material testing and fracture mechanics. Crack initiation: Stress raisers, slip bands, grain boundaries and second phase particles. Fatigue: ork hardening. Overload, fracture in compression - brittle. Fracture in shear - ductile, fracture in shear - brittle. Fracture in torsion - ductile, fracture in torsion - brittle. Fracture in bending - ductile, fracture in bending brittle.
Corrosion: Electro chemical reactions. Dissimilar metal cells, local action cells, corrosion rate. The aggressive environment. Types of corrosion: General corrosion, pitting corrosion, intergranular corrosion, stress corrosion, corrosion fatigue and hydrogen embrittlement.
Welding: Principle of welding. Methods of welding: Chemical reaction heating, electric arc heating, electric resistance heating, radiant energy beams and other welding processes. Preparation for materials for welding. Defects in welds. Residual stress. Inspection of welds.
For further information please contact the Training Manager.