scholarly journals Application of Recrystallization Texture Evolution Model to Type 430 Stainless-Steel Strip Production

2013 ◽  
Vol 77 (9) ◽  
pp. 339-347
Author(s):  
Toshiharu Morimoto ◽  
Fuyuki Yoshida ◽  
Yuji Kusumoto ◽  
Masahiko Oda ◽  
Jun Yanagimoto
2012 ◽  
Vol 53 (11) ◽  
pp. 1837-1846 ◽  
Author(s):  
Toshiharu Morimoto ◽  
Fuyuki Yoshida ◽  
Yuji Kusumoto ◽  
Masahiko Oda ◽  
Jun Yanagimoto

2007 ◽  
pp. 4926-4931
Author(s):  
A. Ferreira Filho ◽  
C. Herrera ◽  
Nelson Batista de Lima ◽  
R.L. Plaut ◽  
Angelo Fernando Padilha

2014 ◽  
Vol 783-786 ◽  
pp. 1954-1960
Author(s):  
Toshiharu Morimoto ◽  
Y. Fuyuki ◽  
A. Yanagida ◽  
Jun Yanagimoto

T.M.C.P.(Thermo Mechanical Control Processing) has been widely used to improveplastic formability in steel strips. We have produced interstitial free steel(IF steel) strips and ferriticstainless-steel strips through T.M.C.P. rolling method. Optimizing conditions of hot rolling, hotrolled annealing, cold rolling and cold rolled annealing, we developed texture prediction model. Wecan predict rolling texture accurately using the conventional Taylor model. Moreover, we preciselypredict recrystallization texture classifying the total number of microscopic􀀁 slips which arecalculated using the Taylor model. We consider that these calculated results provednucleation-oriented model and two types of recrystallization and grain growth mechanisms exit inour studies. One mechanism is that grains which had the small total number of microscopic slips arepreferred orientation for the hot rolled and annealed ferritic stainless-steel strip. The othermechanism is that grains which had the high total number of microscopic slips are preferredorientation for the cold rolled and annealed IF steel strip.


2007 ◽  
Vol 539-543 ◽  
pp. 4926-4931 ◽  
Author(s):  
A. Ferreira Filho ◽  
C. Herrera ◽  
Nelson Batista de Lima ◽  
R.L. Plaut ◽  
Angelo Fernando Padilha

The evolution of the crystallographic texture of ferritic stainless steels, starting from the as received (hot rolled) condition from the steel mill, going through cold rolling, annealing and final stamping is analyzed in this paper. Two ferritic stainless steels (Nb stabilized) having a thickness of 3.0 and 0.7mm, have been employed. The thicker one has been cold rolled to 40 and 73% thickness reduction, annealed at 750 and 850°C for 1 hour. The thinner one, with a similar composition, has been 77% cold rolled and annealed at 870°C at the steel plant and subsequently submitted to deep drawing in order to evaluate texture and drawability. Texture has been evaluated using DRX in the as received, cold rolled, annealed and after drawing conditions. Drawability has been evaluated using tensile testing in order to obtain the FLC curves. AISI 430 stainless steel, in the as received condition presented a strong {100} texture in the <110> and <120> directions and the gamma fiber. After cold rolling, the material presented stronger gamma and weaker alpha fibers. Annealing of the cold rolled samples conduced to the vanishing of the alpha and strengthening of the gamma fiber, adequate for deep drawing operations. In spite of the AISI 430 of 0.7mm having presented a strong gamma fiber, other deep drawing properties were not adequate and the material cracked during stamping.


2016 ◽  
Vol 879 ◽  
pp. 1656-1661
Author(s):  
Paula Oliveira Malta ◽  
Iane Dutra Moutinho ◽  
Davi Silva Alves ◽  
Aline Vasconcelos Ferreira ◽  
Dagoberto Brandão Santos

The ferritic stainless steel type 430 stabilized with Nb, with and without annealing after hot rolling, was cold rolled and subjected to isothermal annealing at temperatures 650, 700 and 750°C for times ranging between 10 to 86400 s. The recrystallization kinetics was evaluated by JMAK model through microhardness measurements and KAM and GOS parameters. The Avrami exponent data indicate the occurrence of an unidimensional grain growth due only to high angle boundaries migration, with values ranging between 0.9 and 1.2. The nucleation rate and grain growth decreased continuously with time. The evolution of the texture was analyzed via EBSD analysis by ODF maps. The steel recrystallization is based on combination of ON and SG theories, due to presence of {111}<121>, {554}<225> and {111}<112> related to γ fiber. The rotated cube component, feature of the hot rolled steel, decreased with annealing time.


1991 ◽  
Vol 13 (4) ◽  
pp. 227-241 ◽  
Author(s):  
C. D. Singh ◽  
V. Ramaswamy ◽  
C. Suryanarayana

The ODF analysis of the surface texture of the hot band of austenitic stainless steel reveals the presence of orientations of shear texture. These orientation elements are mainly distributed along two limited tubes of preferred orientations. The fibre of the first tube has its axis 〈110〉 ‖ RD and runs from {001} 〈110〉 to an orientation near {112}〈110〉 whereas the fibre of the second tube is inclined 30° from ND towards RD (i.e. 〈110〉 30° ND fibre) and stretches from {111}〈112〉 + 5° to the orientation near {112}〈110〉. The shear texture components are formed at the surface by shearing during hot rolling. Once they are formed, they get partly recrystallized by dynamic in situ recrystallization. On the other hand a duplex texture (i.e. retained copper type and recrystallization type) is present at the centre level of the hot band. The orientation elements of copper type (i.e. 〈110〉 60° ND fibre) are {011}〈112〉, ≈ {123}〈634〉 and {112}〈111〉 whereas the recrystallization texture components are dominated by cube {001}〈100〉 orientation and other RD rotated cubes through oriented nucleation during dynamic recrystallization.


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