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 details contact the Training Manager.