Salzgitter Flachstahl Gmbh

Sms Siemag Aktiengesellschaft

Salzgitter Glachstahl Gmbh

Sms Group Gmbh

Bianca Springub

Zacharias Georgeou

Thomas Evertz

Manuel Otto

Hellfried Eichholz

Rune Schmidt-Jürgensen

Karl-Heinz Spitzer

Michael Braun

Joachim Konrad

Markus Schäperkötter

Wilko Flügge

Matthias Höfemann

Daniela John

An energy-storing container is made of a lightweight steel having the following chemical composition (in wt %): C 0.04-2%; Mn 14-30%; Al 1.5-12%; Si 0.3-3%; Cr 0.12-6%, and additionally one or more of the following elements: Ti, V, Nb, B, Zr, Mo, Ni, Cu, W, Co, P, N, each at up to 5% and in total at up to 10%, wherein the remainder is Fe including common steel tramp elements, wherein the concrete alloy composition is selected in order to limit the &#x3b1;'-martensite fraction before or after a forming process to no more than 3%, with the stipulation that the &#x3b1;&#x2032;-martensite equivalent according to 0.1*wt % Mn+wt % C+0.05*wt % Si is between 3.4 and 10.5.

Method for producing an energy-storing container made of lightweight steel

A method is disclosed for producing components from an austenitic lightweight steel which is metastable in its initial state, by forming of a sheet, a circuit board or a pipe in one or more steps, exhibiting a temperature-dependent TRIP and/or TWIP effect during forming. To obtain a component with, in particular, high toughness, the forming is carried out at a temperature above room temperature, at 40 to 160&#xb0; C., which avoids the TRIP/TWIP effect, and to achieve in particular high component strength, the forming is carried out at a temperature below room temperature, at &#x2212;65 to 0&#xb0; C., which enhances the TRIP/TWIP effect.

Method for producing components from lightweight steel

A welding additive for electric arc welding and laser beam welding of mixed joins composed of austenitic and high-manganese-containing and ferritic steel, where the high-manganese-containing steel has a manganese content of at least 7-30% by weight includes the following alloy elements in % by weight: C 0.04-1.0; Mn 7-30; Si&#x2266;6; Al&#x2266;4; Mo&#x2266;2; Ti&#x2266;0.5; Zr 0.01-01; B 0.001-0.01; P&#x3c;0.005; S&#x3c;0.002; N&#x3c;0.008; balance iron and unavoidable steel accompanying elements.

Welding additive for electric arc welding and laser beam welding of mixed joins made of austenitic and ferritic steel

A method for producing a workpiece having properties which are adjustable across a wall thickness or strip thickness of the workpiece, includes the steps of subjecting the workpiece to a decarburizing annealing treatment under an oxidizing atmosphere and to an accelerated cooling and/or a cold forming for generating a property gradient of the workpiece, wherein the workpiece is made of an austenitic lightweight steel which has an alloy composition which includes by weight percent 0.2% to 1% carbon, 0.05% to&#x3c;15% aluminum, 0.05% to 6.0% silicon, 9% to&#x3c;30% manganese, and at least one element selected from the group consisting of chromium, copper, boron, titanium, zirconium, vanadium and niobium, wherein chromium=4.0%; titanium+zirconium=0.7%; niobium+vanadium=0.5%, boron=1%, the remainder iron including common steel companion elements.

Method for producing workpieces from lightweight steel having material properties that are adjustable across the wall thickness

A method for producing a cast strip from steel with properties that can be adjusted across a cross section and a length of the strip, includes applying a coating mass including a carrier liquid with additives contained therein to a side of a rotating cast band of a horizontal strip cast system, drying the coating mass for removing liquid components of the coating mass, applying a steel melt to the side of the rotating cast band via a melt container, wherein the dried coating mass is materially united with the applied steel melt; and allowing the steel melt to solidifiy to a pre-strip.

Process and device for producing a cast strip with material properties which are adjustable over the strip cross section

The invention relates to a method for producing a hot strip from transformation-free ferritic steel, wherein a melt is cast into a roughed strip and the latter is subsequently rolled into a hot strip. For this purpose, it is provided that the melt is cast in a horizontal strip casting facility under conditions of a calm flow and free of bending into a roughed strip in the range between 6 and 20 mm and is subsequently rolled into hot strip having a degree of deformation of at least 50%.

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Hannover, Germany

Bianca Springub