Goldschmidt Ag

Honda Motor Co., Ltd.

Daimler Ag

Metallgesellschaft Aktiengesellschaft

Th. Goldschmidt Ag

Salzgitter Flachstahl Gmbh

Elektro-thermit Gmbh

Max-planck-institut Fur Eisenforschung Gmbh

Robert Zapp Werkstofftechnik Gmbh & Co. Kg

Volkswagen Ag

Georg Frommeyer

Wilfried Knott

Andreas Weier

Tilmann Haug

Karl-Heinz Spitzer

Dagmar Windbiel

Michael Steinhorst

Joachim Kroos

Yoshitaka Okitsu

Zacharias Georgeou

Masashi Ishii

Manfred Recksik

Volker Flaxa

Gerhardus Johannes Mulder

Eberhard E Schmid

Arndt Gerick

Wolfgang Kleinekathöfer

Sven Leonhardt

Jurij Weiss

Klaus Brokmeier

Kersten V Oldenburg

Michael Kulse

Udo Brüx

Klaus Brockmeier

Wieland Walz

Jürgen Kiese

A high-strength steel sheet comprises, by weight, not less than 0.25% and not more than 0.5% of C, not less than 4% and not more than 14% of Mn, not less than 6.5% and not more than 9.5% of Cr, and not less than 0.3% and not more than 3% of Si. The high-strength steel sheet satisfies formulas 1 and 2, formula (1) being 12&#x2266;2.0Si+5.5Al+Cr+1.5Mo&#x2266;25 and formula (2) being 13&#x2266;30C+0.5Mn+0.3Cu+Ni+25N&#x2266;17, and mainly consists of austenite, and the high-strength steel sheet has yield strength of not less than 1000 MPa and total elongation of not less than 20%. In formulas 1 and 2, each element in the above formulas indicates the content, in weight %, of the element.

High-strength steel sheet and the method for production therefor

In a method for making hot strips, a workable lightweight construction steel is used which in particular can easily be deep-drawn cold and includes the main elements Si, Al and Mn, with high tensile strength and good TRIP and/or TWIP characteristics. The mass % are as follows for C 0.04 to &#x3c;1.0, Al 0.05 to &#x3c;4.0, SI 0.05 to &#x2266;6.0; Mn 9.0 to &#x2266;30.0, the remainder being iron with the common incidental steel elements. The melt is cast in a horizontal strip casting unit, close to the final dimensions at calm flow and without bending to form a pre-strip in the range between 6 and 15 mm, and subsequently is fed for further processing.

Method for making hot strips of lightweight construction steel

A density reducing high carbon containing or UHC-steel and particular a superplastic steel, which besides iron and impurities conventionally accompanying steel, contains the following alloy components in wt. %:0.8 to 2.5% C3.5 to 15% Al0.5 to 4% Cr0.01 to 4% Siup to 4% Ni, Mn, Mo, Nb, Ta, V, and/or W,

High carbon steel with superplasticity

Production of large-area metallic integral foams

The present invention describes the use of zinc treated with metal hydride in organometallic synthesis.

Use of zinc treated with metal hydride in organometallic synthesis

A process for separating molten metals, the molten metals being treated with metal hydrides is provided. The molten metals employed are from Groups II-IV of the Periodic Table of Elements and the subgroups, including their alloys, and are distinguished by the fact that the metals or alloys are reacted with a metal hydride in a molten bath.

Process for separating molten metals

The invention relates to activated magnesium metal, to a method of activating magnesium metal and to its use for the preparation of organomagnesium compounds. The activated magnesium metal is obtainable by reacting molten magnesium metal with magnesium hydride; or by heating a mixture of magnesium metal and magnesium hydride until molten.

Activated magnesium metal

The invention relates to an aluminothermic mixture consisting of a finely particulate base portion of iron oxides and aluminum as well as metallic additives, wherein a master alloy, namely a ferrochromium alloy consisting of (in % by weight)

Aluminothermic mixture with ferrochromium alloy

In a fusion-metallurgical process of producing fine-grained hereogeneous, ductile alloys which contain Mg.sub.2 Si, the grain size of the Mg.sub.2 Si crystallites formed by primary solidification is kept below 30 .mu.m by doping the molten alloy with 0.05 to 2% by weight of phosphorus.

Process of producing Mg.sub.2 Si-containing alloys

In a process for making tools from medium and high alloy steels or stellites by superplastic precision forming a powder metallurgically produced starting material with an equiaxed structure and more than 30% by volume of carbidic and/or boridic precipitated phase of particle size 1 to 0.2 .mu.m is given a matrix grain size of 1 to 3 .mu.m by thermomechanical processing (hot forming) and formed in the superplastic state.

Process for the production of tools

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Erkrath, Germany

Georg Frommeyer