Influence of the Cold Rolling Reduction on the Texture Development and r-Value Anisotropy in Ti-Stabilized 18% Cr Ferritic Stainless Steel

2010 ◽  
Vol 160 ◽  
pp. 129-134 ◽  
Author(s):  
I. Jung ◽  
D. Chae ◽  
Bruno C. De Cooman
Keyword(s):  
Stainless Steel ◽  
Cold Rolling ◽  
Ferritic Stainless Steel ◽  
Texture Component ◽  
Recrystallization Texture ◽  
Rolling Reduction ◽  
Cold Reduction ◽  
Planar Anisotropy ◽  
Cold Rolling Reduction ◽  
Hot Band

Ti stabilized AISI 439 type 18% Cr ferritic stainless steel offers an attractive alternative for replacing Ni-containing austenitic steels. The influence of the cold rolling reduction on texture development and the planar anisotropy of Ti-stabilized 18% Cr ferritic stainless steel have been studied in order to find an optimized processing route to obtain improved formability properties. In the present study, both annealed and un-annealed hot strips were given different cold rolling reductions up to 86%, and recrystallization annealed. The recrystallization texture was analyzed by means of XRD. Tensile tests were carried out on cold rolled and annealed samples oriented in seven different directions to the rolling direction to evaluate the planar anisotropy in detail. The mean normal anisotropy rm increased with increasing cold reduction for both annealed hot band and un-annealed hot band. The planar anisotropy revealed a behavior related to the development of the recrystallization texture component in the annealed hot band and the texture component in the un-annealed hot band, with increasing cold reduction.

Influence of Cold Working and Grain Size on Pitting Corrosion Resistance of Ferritic Stainless Steel

2011 ◽  
Vol 217-218 ◽  
pp. 1180-1184 ◽  
Author(s):  
Hua Bing Li ◽  
Zhou Hua Jiang ◽  
Qi Feng Ma ◽  
Zhen Li
Keyword(s):  
Grain Size ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Cold Rolling ◽  
Ferritic Stainless Steel ◽  
Pitting Corrosion ◽  
Cold Working ◽  
Rolling Reduction ◽  
Pitting Corrosion Resistance ◽  
Cold Rolling Reduction

The influence of cold working and grain size on the pitting corrosion resistance of Fe-Cr-Nb-Mo ferritic stainless steel is investigated using optical microscope and electrochemical methods. The pitting corrosion resistance firstly decreases with increasing the cold-rolling reduction from 0% to 30% due to the number of nucleation site increasing. With increasing the cold-rolling reduction from 40% to 60%, the disappearance of grain boundaries, stacked dislocation and uniform microstructure results in the pitting corrosion resistance of the steel. With prolonging the annealing time, the grain size of the steel grows, and the pitting potential of the steel decrease. The smaller grain size promotes the formation of compact passive film and improves the pitting corrosion resistance.

scholarly journals Influence of Grain Refinement of Hot Band and Cold Rolling Reduction on the Formation of Textures and R-Value of Cold Rolled Plain Extralow-Carbon Steel Sheets

1997 ◽  
Vol 30 (1-2) ◽  
pp. 97-123 ◽  
Author(s):  
Takehide Senuma ◽  
Natsuko Hashimoto
Keyword(s):  
Carbon Steel ◽  
Cold Rolling ◽  
Textural Analysis ◽  
Rolling Reduction ◽  
Planar Anisotropy ◽  
Steel Sheets ◽  
Cold Rolling Reduction ◽  
Hot Band ◽  
Cold Rolled ◽  
R Value

A textural analysis was carried out to explain the cause of the planar anisotropy of r-value of cold rolled plain extralow-carbon steel sheets. For a detailed analysis, a model for calculating r-values from ODF-data of texture was applied and the influence of each or a group of crystal orientations of the recrystallization texture on the planar anisotropy of r-values was studied. The following results were obtained:A development of {111}〈110〉−{443}〈110〉−{332}〈110〉−{221}〈110〉 enhanced the V-type planar anisotropy of r-values. A decrease in the intensity of these orientations by increasing the cold rolling reduction or the refinement of the hot band microstructure reduced the r-values in L and C directions and hardly affected the r-value in D direction, and as a result, the V-type planar anisotropy of r-values was improved. On the other hand, an increase in the intensity of {111}, {334} orientation by increasing the cold rolling reduction or the refinement of the hot band microstructure raised r-values in sequence of L < D < C directions and contributed to the reduction of V-type planar anisotropy of r-values as a whole.

Influence of Cold Rolling Reduction on Microstructure and Mechanical Properties in 204C2 Austenitic Stainless Steel

2019 ◽  
Vol 944 ◽  
pp. 193-198
Author(s):  
Tian Yi Wang ◽  
Ren Bo Song ◽  
Heng Jun Cai ◽  
Jian Wen ◽  
Yang Su
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Cold Rolling ◽  
Stainless Steels ◽  
Rolling Reduction ◽  
Cold Rolling Reduction

The present study investigated the effect of cold rolling reduction on microstructure and mechanical properties of a 204C2 Cr–Mn austenitic stainless steel which contained 16%Cr, 2%Ni, 9%Mn and 0.083 %C). The 204C2 austenitic stainless steels were cold rolled at multifarious thickness reductions of 10%, 20%, 30%,40% and 50%, which were compared with the solution-treated one. Microstructure of them was investigated by means of optical microscopy, X-ray diffraction technique and scanning electron microscopy. For mechanical properties investigations, hardness and tensile tests were carried out. Results shows that the cold rolling reduction induced the martensitic transformation (γ→α ́) in the structure of the austenitic stainless steel. With the increase of the rolling reduction, the amount of strain-induced martensite increased gradually. Hardness, ultimate tensile strength and yield strength increased with the incremental rolling reduction in 204C2 stainless steels, while the elongation decreased. At the thickness reduction of 50%, the specimen obtained best strength and hardness. Hardness of 204C2 stain steel reached 679HV. Ultimate tensile strength reached 1721 MPa. Yield strength reached 1496 MPa.

Effect of cold rolling reduction on texture, recrystallization and mechanical properties of UNS S32304 Lean Duplex stainless steel

2021 ◽  
Vol 802 ◽  
pp. 140577
Author(s):  
Ariane Neves de Moura ◽  
Cláudio Moreira de Alcântara ◽  
Tarcísio Reis de Oliveira ◽  
Marco Antônio da Cunha ◽  
Marcelo Lucas Pereira Machado
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Cold Rolling ◽  
Duplex Stainless Steel ◽  
Rolling Reduction ◽  
Lean Duplex Stainless Steel ◽  
Cold Rolling Reduction

Modification of the Recrystallization Texture by Means of Cross Rolling in Ferritic Stainless Steel Sheets

2004 ◽  
Vol 449-452 ◽  
pp. 113-116 ◽  
Author(s):  
Jong Heun Lee ◽  
Soo Ho Park ◽  
Moo Young Huh
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Recrystallization Texture ◽  
Recrystallization Annealing ◽  
Deformation Model ◽  
Center Layer ◽  
Cross Rolling ◽  
Steel Sheets ◽  
Hot Band ◽  
Rolling Deformation

In order to optimize the recrystallization texture of ferritic stainless steel sheets, the crystallographic texture was modified by means of cross rolling. The as-received hot band displayed pronounced through-thickness texture gradients with a strong rotated cube orientation in the sheet center layer. After the conventional normal rolling, the strong initial texture was retained. Pronounced{001}<110> in the rolling textures led to the formation of {334}<483> in the final recrystallization texture. Cross rolling in the present work was performed by a 45° rotation of RD around ND. Cross-rolling led to a weakening of {001}<110> orienations. After recrystallization annealing the cross-rolled samples displayed stronger {111}//ND orientations. The orientation stability during the rolling deformation was tackled by means of Taylor deformation model.

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