Siemens Aktiengesellschaft

Other

Seimens Aktiengesellschaft

Howmet Corporation

Winfried Esser

Peter Tiemann

Thomas Beck

Peter Schröder

Fathi Ahmad

Michael Ott

Robert Singer

Ralph Reiche

Andreas Böttcher

John J Corrigan

Georg Bostanjoglo

Eckart Schumann

Mirko Milazar

Tobias Buchal

Volker Vosberg

Oliver Schneider

Jürgen Preuhs

John R Mihalisin

Jan Münzer

Sascha Dungs

Russell G Vogt

Ralf Müsgen

Giuseppe Gaio

Ursula Pickert

Matthias Oechsner

Uwe Paul

Nicolas Savilius

Thorsten Mattheis

Dirk Goldschmidt

Der-Yan Frank Roan

Ralf Buergel

Stefan Krause

Rudolf Küperkoch

Andreas Volek

Torsten Koch

Christian Amann

Birgit Grüger

Katharina Bergander

Christopher R Hanslits

Rostislav Teteruk

Björn Beckmann

Oliver Lüsebrink

Jörn Grossmann

Burkhard Bischoff-Beiermann

Ralf Bürgel

Wolfgang Hermann

Hael Mughrabi

Florian Pyczak

Alfred Scholz

Michael Haendler

Adolf Donner

Jurgen Ewald

Peter Krug

Waldemar Socha

Russel G Vogt

Thorsten Koch

A layer system including a substrate and a layer is provided. The layer system has a hole at least in the layer, and wherein at least one recess is present in a surface of the layer in a vicinity around the hole or directly adjoining a boundary line of the hole.

Modified interface around a hole

During a solution heat treatment grain recrystallization may occur of a textured article, especially at the surface rim. The present invention provides a method for restoring the microstructure of a textured article, which comprises coating the surface of the article with a high temperature stable surface coating or by a controlled development of an oxide scale and subsequently performing a solution heat treatment, thereby maintaining said thermally stable surface coating.

Method for restoring the microstructure of a textured article and for refurbishing a gas turbine blade or vane

A high-temperature component made of a nickel super-alloy has the following composition in wt %: 11&#x2013;13% of Cr, 3&#x2013;5% of W, 0.5&#x2013;2.5% of Mo, 3&#x2013;5% of Al, 3&#x2013;5% of Ti, 3&#x2013;7% of Ta, 1&#x2013;5% of Re and a remainder formed of nickel. A corresponding component which is also provided is formed of an alloy having a composition essentially similar to that mentioned above, but with the rhenium proportion replaced with 0.1&#x2013;5 wt % of ruthenium.

High-temperature-resistant component and process for producing the high-temperature-resistant component

A metallic layer is cooled below room temperature, leading to an embrittlement. Subsequently, the metallic layer is stripped by performing a blasting process having a high efficiency because of the brittleness. Additionally, the substrate is prevented from being damaged by using a comparatively low blasting energy.

Method for removing a metallic layer of a layer-system

In a method of producing a turbine blade in hollow section, an especially low defect or scrap rate is to be ensured. To this end, a first core element is connected via a number of approximately cylindrical spacers to a further core element and/or to a casting mold, the cavities left in the casting mold by the core elements being filled by blade material, and the openings remaining in the turbine blade after the removal of the core elements and the spacers and produced by the spacers being closed by stopper elements.

Method of producing a turbine blade

During a solution heat treatment grain recrystallization may occur of a textured article, especially at the surface rim. The present invention provides a method for restoring the microstructure of a textured article, such as a gas turbine engine blade, which comprises coating the surface of the article with a high temperature stable surface coating or by a controlled development of an oxide scale and subsequently performing a solution heat treatment, thereby maintaining said thermally stable surface coating.

A turbine blade, in particular a gas-turbine blade, which extends along a main axis from a root region over a blade body region to a tip region. The turbine blade has a cavity in the blade body region, at least regions of the cavity being surrounded by a blade wall having a small wall thickness. The blade wall is formed of a metallic material having a small average grain size. In addition, a method of producing the turbine blade is further disclosed.

Turbine blade and method of producing a turbine blade

Machineable nickel base alloy casting, consisting essentially of, in weight %, about 12.5% to 15% Cr, about 9.00% to 10.00% Co, about 3.70% to 4.30% Mo, about 3.70% to 4.30% W, about 2.80% to 3.20% Al, about 4.80% to 5.20% Ti, about 0.005% to 0.02% B, up to about 0.10% Zr, and balance essentially Ni and carbon below about 0.08 weight % to improve machinability while retaining alloy strength properties after appropriate heat treatment.

Nickel base superalloy with improved machinability and method of making thereof

In a method for removing tin from a surface and/or from a region close to the surface of a component part, the component part has a concentrated aqueous sodium hydroxide or concentrated hydrochloric acid flowing in contact with it at a temperature which is distinctly higher than room temperature. Preferably, the temperature is approximately 220.degree. C., and the component part is moreover subjected to a positive pressure of 5.5 bar. The method is suitable for a component part fabricated through the use of unidirectional solidification and liquid-metal cooling, in particular a turbine blade.

Method for removing tin

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Bochum, Germany

Winfried Esser