Effect of particle pinning on recrystallization of a titanium-stabilized stainless steel

• Recent work has shown that maintenance of coherency between stable particles and matrix after the bypassing of grain boundaries during grain growth can occur to reduce the energy of the particle /matrix interface, and that this occurs by a diffusion controlled bodily rotation of the particle. Since coherent particles, in general, offer more resistance to migrating boundaries than incoherent ones, a particle rotation, if it occurs, should tend to help refine grain size following recrystallization. The recrystallization and early stages of grain growth of a deformed Ti-stabilized austenitic stainless steel (321) containing coherent and semicoherent TiC precipitates has been studied by light optical and transmission electron microscopy. Evidence for a particle rotation following recrystallization of this alloy is presented. A model explaining this behaviour is developed and discussed in terms of the likely effects phenomena such as this and particle reversion will have on the recrystallization behaviour of these steels

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Annan materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Other Materials Engineering (hsv//eng)

Nyckelord

Materialteknik

Engineering Materials

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