Effect of Texture Components on the Lankford Parameters in Ferritic Stainless Steel Sheets

Lee, Kye Man; Huh, Moo Young; Park, Sooho; Engler, Olaf

doi:10.2355/isijinternational.52.522

Cited by 25 publications

(17 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During recrystallization is expected a reduction of α fiber level and a consequent increase in γ fiber level. In the annealed sample, Figure 7 (f), there is almost none component related to Rotated Cube, which was predicted by Lee et al 8 due to intermediate annealing treatment, which was applied in this steel after hot rolling, and is able to reduce the development of Rotated Cube component after final annealing. It highlights the importance and the effect of previous texture on the final recrystallized texture.…”

Section: Texture Analysissupporting

confidence: 48%

“…Some studies have shown that elevated values of the average normal anisotropy coefficient, R, and lower planar anisotropy coefficient, ΔR, promote good deep drawability and are related to a good development of gamma texture. 7,8 Drawability is one of the major requirements for the main applications of FSS 1 and can be achieved increasing the texture levels of gamma fiber and lowering the levels of alpha and theta fibers. 9 The FSS ASTM 430 stabilized with niobium, 430Nb, present a good combination of mechanical properties and drawability which make them suitable for use that requires good drawability and good superficial finishing.…”

Section: 2mentioning

confidence: 99%

See 1 more Smart Citation

Microstructure, Texture and Microhardness Evolution during Annealing Heat Treatment and Mechanical Behavior of the Niobium-Stabilized Ferritic Stainless Steel ASTM 430 and Niobium-Titanium-Stabilized Ferritic Stainless Steel ASTM 439: a Comparative Study

Tanure

Alcântara²,

Oliveira³

et al. 2017

Mat. Res.

View full text Add to dashboard Cite

A comparison of the influence of microstructure and texture on mechanical behavior between the niobium-stabilized ferritic stainless steel type ASTM 430, 430Nb, and the niobium-titanium-stabilized ferritic stainless steel type ASTM 439 was performed. The two steels were supplied as cold rolled thin sheets and the annealing was interrupted in different temperatures aiming the characterization of the microstructure and texture in different stages of recrystallization using optical microscopy, Vickers microhardness and Electron Backscatter Diffraction. The annealed samples were tensile tested to determine the mechanical properties and undergone to Swift test to evaluate the drawability. The steel 430Nb showed smaller grain size and greater yield stress. The steel ASTM 439 presented higher normal anisotropy coefficient, R, and higher Limit Drawing Ratio due to greater proportion of γ fiber. These results are presented and discussed in terms of precipitates and crystallographic texture developed in the recrystallization of both steels.

show abstract

Section: Texture Analysissupporting

confidence: 48%

Section: 2mentioning

confidence: 99%

Microstructure, Texture and Microhardness Evolution during Annealing Heat Treatment and Mechanical Behavior of the Niobium-Stabilized Ferritic Stainless Steel ASTM 430 and Niobium-Titanium-Stabilized Ferritic Stainless Steel ASTM 439: a Comparative Study

Tanure

Alcântara²,

Oliveira³

et al. 2017

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…The crystallographic texture control is essential for optimizing the formability of these steels, and the formation of the texture is governed by the thermomechanical processes involved in the production of ferritic steel grades . The formability of ferritic stainless steels is lower than that of low‐carbon steels and austenitic stainless steels .…”

Section: Introductionmentioning

confidence: 99%

Effects of Annealing Conditions on Recrystallization, Texture, and Average Normal Anisotropy Coefficient of a Niobium‐Stabilized Ferritic Stainless Steel

Rodrigues

Alcântara²,

Santos

et al. 2017

steel research int.

View full text Add to dashboard Cite

The present study investigates the influence of the heating rate on annealing, microstructure, recrystallization, texture, and the average normal anisotropy coefficient, r value, of a niobium-stabilized ferritic stainless steel (i.e., an ASTM 430-type steel). Experiments with 0.10 and 41.5 8C s À1 heating rates are performed after 85% cold rolling. The sample's characterization is performed by optical microscopy, transmission electron microscopy, electron backscatter diffraction, and hardness tests. The tensile tests are performed to determine the r value and the Dr value. The results show that the extent of recrystallization and the average grain size decreases significantly when the heating rate is raised. This increased heating rate causes a weakening of g-fiber and of the 334 f gh483i and 554 f gh225i components, and leads to an even more randomized recrystallization texture. The r value after having achieved full recrystallization is improved when the heating rate is reduced. The r ¼ 1:99 is obtained for g=u ¼ 5:11 with a lower heating rate. These observed differences in recrystallization, grain size, and recrystallization texture are mainly related to the nucleation rate during annealing. The high intensity of the g-fiber is attributed to the number advantage of g-fiber grains after full recrystallization.[ Ã ] Dr.

show abstract

“…Based on the previous studies and due to the weak texture in the γ phase, the r ‐value is greatly dependent on the texture of the α phase in DSSs . Lee also found that the r ‐value of the sheet was determined by the main texture type of the material. Since the texture intensity in the α phase is much larger than that in the γ phase, the texture in the α phase is analyzed emphatically.…”

Section: Resultsmentioning

confidence: 93%

The Crystallographic Textures and Anisotropy in 2507 Super Duplex Stainless Steel

Gao

Wang

2018

steel research int.

View full text Add to dashboard Cite

In this work, the annealing textures in different thickness layers and the Lankford parameter (r‐value) in 2507 duplex stainless steel (DSS) are studied via tensile testing, X‐ray diffraction (XRD), and electron backscatter diffraction (EBSD). The results show that 2507 DSS has poor formability, especially poor deep drawability and noticeable planar anisotropy after cold‐rolling with an average r‐value of 0.86, a planar anisotropy △r of −0.38, and an earring ratio of 7.43. The orientation distribution functions (ODFs) from the different thickness layers show that the texture mainly exists in the ferrite (α) phase, and there is a significant texture gradient in the thickness direction. The texture of the α phase has a strong α‐fiber texture (<110>//RD) and an undeveloped γ‐fiber recrystallization texture (<111>∥ND). The texture intensity of the austenite (γ) phase is weak and is mainly composed of Copper {112}<111>, Brass {110}<112>, Goss {110}<001>, and S {123} <634>. The {001}<110> texture component is highly intense in the α phase and is the dominant reason for the low Lankford parameter (r‐value), whereas the {112}<110> orientation is the main factor for the high planar anisotropy (Δr). The results of the grain orientations after tensile deformation in different directions show that the maximum volume fraction ratios for the {001} and {111} orientations are the root cause of the largest r‐value in the 45° direction.

show abstract

Effect of Texture Components on the Lankford Parameters in Ferritic Stainless Steel Sheets

Cited by 25 publications

References 29 publications

Microstructure, Texture and Microhardness Evolution during Annealing Heat Treatment and Mechanical Behavior of the Niobium-Stabilized Ferritic Stainless Steel ASTM 430 and Niobium-Titanium-Stabilized Ferritic Stainless Steel ASTM 439: a Comparative Study

Microstructure, Texture and Microhardness Evolution during Annealing Heat Treatment and Mechanical Behavior of the Niobium-Stabilized Ferritic Stainless Steel ASTM 430 and Niobium-Titanium-Stabilized Ferritic Stainless Steel ASTM 439: a Comparative Study

Effects of Annealing Conditions on Recrystallization, Texture, and Average Normal Anisotropy Coefficient of a Niobium‐Stabilized Ferritic Stainless Steel

The Crystallographic Textures and Anisotropy in 2507 Super Duplex Stainless Steel

Contact Info

Product

Resources

About