Does diffusion annealing is followed by normalizing before hardening treatment?
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Diffusion annealing is used in the case of heavy casting, for the removal of heterogeneity in the composition. The austenite grains are homogenized when heated above the upper critical point . But the process of diffusion annealing is followed by full annealing to obtain fine graoned structure in caRead more
Diffusion annealing is used in the case of heavy casting, for the removal of heterogeneity in the composition. The austenite grains are homogenized when heated above the upper critical point . But the process of diffusion annealing is followed by full annealing to obtain fine graoned structure in castings. Normalisation is done on steels for grain refinement and improvement of mechanical properties.
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