Dependency of recrystallization mechanism to the initial grain size
Dehghan-Manshadi, A. and Hodgson, P. D. 2008, Dependency of recrystallization mechanism to the initial grain size, Metallurgical and materials transactions A - physical metallurgy and materials science, vol. 39, no. 12, pp. 2830-2840.
Title
Dependency of recrystallization mechanism to the initial grain size
Metallurgical and materials transactions A - physical metallurgy and materials science
Volume number
39
Issue number
12
Start page
2830
End page
2840
Publisher
Springer New York LLC
Place of publication
New York, N.Y.
Publication date
2008-12
ISSN
1073-5623 1543-1940
Summary
The effect of initial grain size on the recrystallization behavior of a type 304 austenitic stainless steel during and following hot deformation was investigated using hot torsion. The refinement of the initial grain size to 8 μm, compared with an initial grain size of 35 μm, had considerable effects on the dynamic recrystallization (DRX) and post-DRX phenomena. For both DRX and post-DRX, microstructural investigations using electron backscattered diffraction confirmed an interesting transition from conventional (discontinuous) to continuous DRX with a decrease in the initial grain size. Also, there were unexpected effects of initial grain size on DRX and post-DRX grain sizes.