Transformation behaviour in thermomechanically processed C–Mn–Si TRIP steels with and without Nb
作者： E.V Pereloma , I.B Timokhina , P.D Hodgson
DOI: 10.1016/S0921-5093(99)00325-1
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摘要: Abstract Two 0.2wt.% C–1.55wt.% Mn–1.5wt.% Si steels with and without the addition of 0.039 wt.% Nb were studied by laboratory simulations controlled thermomechanical processing in a quench deformation dilatometer. The microstructures characterised using optical metallography, image analysis scanning electron microscopy techniques. effects recrystallised non-recrystallised austenite discontinuous paths on final microstructure studied. results have shown that highest volume fraction retained is associated 400°C isothermal bainite transformation temperature presence approximately 50% polygonal ferrite acicular as dominant second phase.
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