Textures of strip cast Fe16%Cr

Raabe, Dierk; Reher, F.; Hölscher, M.; Lücke, K.

doi:10.1016/0956-716x(93)90264-s

Cited by 25 publications

(13 citation statements)

References 4 publications

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“…The fully columnar strips exhibited remarkable ͗001͘//ND fiber texture. The fully equi-axed strips revealed weak and nearly random texture, which was in good agreement with the results given by Raabe et al 13) Figure 6 shows the cold rolling and annealing textures in both fully columnar strips and equi-axed cast strips. In the cold rolled sheet of the columnar strip, the texture was dominated by the {001}͗010͘ cube texture.…”

Section: Texture Developments Of Fully Columnar and Equi-axed Cast Stsupporting

confidence: 81%

“…[6][7][8][9] Strip casting, a "near-net-shape" forming process to bypass hot rolling, is considered to be able to compete with sheet production with conventional continuous casting and thermo-mechanical processing. 10) Extensive work on texture development of strip cast stainless steels has been carried out by Raabe and co-workers, [11][12][13] which indicated that initial textures in the cast strip were nearly random and homogenous through thickness. The final cold rolled and annealed sheet of strip cast FSS was also shown to exhibit good deep drawability, and could avoid surface ridging phenomenon.…”

Section: Introductionmentioning

confidence: 99%

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Texture Development and Formability of Strip Cast 17% Cr Ferritic Stainless Steel

Liu¹,

Liu²,

Guo-dong³

2009

ISIJ Int.

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In order to optimize the formability of ferritic stainless steel (FSS), control of the crystallographic texture is essential. In the present work, texture development of cast strips with different initial solidification structure during rolling and subsequent annealing and the formability of final sheets were investigated. Fully equiaxed and columnar grained cast strips of Fe17%Cr FSS were fabricated by a pilot twin-roll strip caster. The equi-axed and columnar grained bars cut from a conventional continuous cast slab were used as comparable specimens. It was shown that in the cold rolled and annealed sheet of fully equi-axed cast strip, uniform and strong g-fiber recrystallization texture was formed and {001}͗110͘ component was almost eliminated. By contrast, the recrystallization texture in the conventional sheets with equi-axed and columnar initial solidification structures exhibited typical shift towards high-index {334}͗483͘, which led to a reduced r-value as compared to that of the equi-axed cast strip. The final annealed sheet of fully columnar cast strip, however, showed weaker g-fiber recrystallization texture and lower r-value than those of conventional sheets. It is, therefore, believed that twin-roll strip casting can improve the formability of 17 % Cr FSS only under the precondition that appropriate solidification structure is obtained.KEY WORDS: ferritic stainless steel; twin-roll strip casting; solidification structure; texture; formability. ent strips in cold rolling and annealing were studied. Equiaxed and columnar bars were cut from a continuous cast slab, and hot rolling, hot band annealing, cold rolling and final recrystallization annealing were performed for both bars to simulate the industrial processes. The texture developments of the two bars were also studied and compared with those of cast strips to understand the evolutions of microstructure, texture and properties in the cast strips. Experimental ProceduresFe17%Cr FSS with a composition of Cr, 16.9; Ni, 0.114; C, 0.03; Mn, 0.154; Si, 0.243; P, 0.016; S, 0.004 (in mass%) was used. Cast strips were produced by using a pilot twinroll strip caster, in which the molten steel was poured into a preheated tundish under Ar shield to flow through a nozzle into the rotated water-cooled rolls.15) The casting speed was set up to be 0.25 m/s and the initial roll gap was set to be 1.5 mm to produce strips with thickness of about 1.8 mm. The pool melt temperature was measured by a thermo-detector installed above the melting pool. In the present work, pool melt superheats were controlled to be about 140 K and 20 K, respectively, to produce fully columnar and fully equi-axed cast strips, Fig. 1. The average diameters of columnar and equi-axed grains were about 400 mm and 200 mm, respectively. Both strips were cold rolled by using a laboratory rolling mill with a thickness reduction of 80 %, and were annealed at 860°C for 2 min.Columnar and equi-axed bars in the size of 250 Lϫ 110 Wϫ45 T (mm) were cut from a cast slab of Cr17 FSS, Fig. 2. The average...

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Section: Texture Developments Of Fully Columnar and Equi-axed Cast Stsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Texture Development and Formability of Strip Cast 17% Cr Ferritic Stainless Steel

Liu¹,

Liu²,

Guo-dong³

2009

ISIJ Int.

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“…For some steel grades, higher scrap fractions and higher contaminant content can be tolerated when casting thin slabs, owing to the high solidification rates (resulting in less segregation and fewer intermetallics forming). The next step is thinstrip steel casting 30,31 . In this approach, liquid steel is cast between two rolls and exposed to a hot reduction step to manufacture strips 2-3 mm thick that are directly coilable.…”

Section: Review Existing Blast Furnaces and Downstream Chemical Convementioning

confidence: 99%

Strategies for improving the sustainability of structural metals

Raabe

Taşan

Olivetti

2019

Nature

382

143

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Metagoods 16% Vehicles 13% Industrial equipment 16% Construction 55% Re ne Smelter Mine Fabrication Manufacture Use New Scrap Old Scrap Land ll Carbon scrap/nickel to other scrap markets Stock End-of-life products c Transportation 19% Electronics 5% Chemicals 1% Industrial machinery 30% Household appliances and metal goods 28% Building and infrastructure17% Mine Rutile Mill product Ti ingot Manufacturing scrap Mill scrap End-of-life products Use Ferrotitanium Ti sponge TiO 2 feed TiCl 4

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“…Previous studies reported that after the hot and the cold rolling process stainless steel showed preferential crystallographic textures [2][3][4][5][6][7][8] . In particular, Raabe and Lücke, 4 showed that ferritic steels, non-stabilised or stabilised with Nb or Ti, had a texture gradient through the thickness of the samples.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Crystallographic Texture and Niobium Stabilisation on the Corrosion Resistance of Ferritic Stainless Steel

2017

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The objective of this work is to investigate the influence of the crystallographic texture on the corrosion resistance of 16% Cr ferritic stainless steel. Samples of ASTM S43000 ferritic stainless steel, both niobium-stabilised and non-stabilised, were used. The samples were subjected to crystallographic characterisation (EBSD) and analysed using an inverse pole figure (IPF) and a crystalline orientation distribution function (CODF). The samples also underwent anodic potentiodynamic polarisation tests (deaeration by high-purity argon gas) in 3.56% NaCl and 1N H 2 SO 4 solutions, and the surface was examined by SEM after the tests. The results showed a clear influence of the crystallographic texture on the corrosion resistance. The niobium decreases the amount of the preferred orientation and thus the influence of the texture on the corrosion resistance, although the corrosion resistance of the stainless steel is increased as niobium carbides are formed.

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Textures of strip cast Fe16%Cr

Cited by 25 publications

References 4 publications

Texture Development and Formability of Strip Cast 17% Cr Ferritic Stainless Steel

Texture Development and Formability of Strip Cast 17% Cr Ferritic Stainless Steel

Strategies for improving the sustainability of structural metals

The Influence of Crystallographic Texture and Niobium Stabilisation on the Corrosion Resistance of Ferritic Stainless Steel

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