Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 212, Issue 1, Pages 59-65Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2011.08.004
Keywords
Ferritic stainless steel; Dual stabilization; Grain size; Texture; Forming limit diagram (FLD)
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In order to better understand the grain size, texture evolution and forming limit major strain of ferritic stainless steel, two kinds of ultrapure ferritic stainless steels (Nb single stabilization and Nb + Ti dual stabilization) with 15 wt%Cr content of the same thickness processed by the same annealing treatment have been studied in this work. Ti addition does not improve the r-value as much, but it appears to refine the grain size of the ferrite and increase the {1 1 1} < 1 1 2 > texture component in the gamma-fiber, especially reduce the planer anisotropy value. The enhancement of the formabilities especially the drawability in forming limit diagram of Nb + Ti dual stabilization 15%Cr ferritic stainless steel mainly due to the refinement of the grain size, higher average r-value and lower planer anisotropy value. (C) 2011 Elsevier B.V. All rights reserved.
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