Recrystallisation at Intercritical Annealing in Low Carbon Steels-Reference-Cited by-同舟云学术

Recrystallisation at Intercritical Annealing in Low Carbon Steels

Published:2007-10 Issue: Volume:558-559 Page:247-252
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Maruyama Naoki¹,Ogawa T.¹,Takahashi M.²

Affiliation:

1. Nippon Steel and Sumitomo Metal Corporation

2. Nippon Steel Corporation

Abstract

Subgrain growth in deformed ferrite and incomplete recrystallisation during intercritical annealing in low carbon (LC) steels was investigated by EBSD and FEGTEM/EDS. It was confirmed that fine dual phase (α+γ) microstructures could be obtained even without the addition of microalloying elements such as Nb and Ti, if the steels were heated above Ac1 temperature before the completion of primary recrystallisation and then intercritically annealed. The fine microstructure was found to be mainly due to the inhibition of primary recrystallisation, and also due to the inhibition of subgrain growth in deformed matrix by finely dispersed γ phase formed during heating. Mn segregation at α/γ interfaces seems to indicate that the kinetics of boundary migration in the existence of γ is controlled by the volume diffusion of substitutional alloying elements across the α/γ interfaces.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.558-559.247.pdf

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