Vdm Metals International Gmbh

Vdm Metals Gmbh

Nicole De Boer

Heike Hattendorf

Stefan Gilges

Andreas Heckmann

Zülfükil Tas

Juergen Kiese

Karl-Heinz Appel

Zuelfuekil Tas

Jürgen Kiese

A high-temperature nickel-base alloy consists of (in wt. %): C: 0.04-0.1%, S: max. 0.01%, N: max. 0.05%, Cr: 24-28%, Mn: max. 0.3%, Si: max. 0.3%, Mo: 1-6%, Ti: 0.5-3%, Nb: 0.001-0.1%, Cu: max. 0.2%, Fe: 0.1-0.7%, P: max. 0.015%, Al: 0.5-2%, Mg: max. 0.01%, Ca: max. 0.01%, V: 0.01-0.5%, Zr: max. 0.1%, W: 0.2-2%, Co: 17-21%, B: max. 0.01%, O: max. 0.01%, with the rest being Ni, as well as melting-related impurities.

High-temperature nickel-base alloy

A method for producing a metal film from an over 50% nickel alloy melts more than one ton of the alloy in a furnace, followed by VOD or VLF system treatment, then pouring off to form a pre-product, followed by re-melting by VAR and/or ESU. The pre-product is annealed 1-300 hours between 800 and 1350&#xb0; C. under air or protection gas, then hot-formed between 1300 and 600&#xb0; C., such that the pre-product then has 1-100 mm thickness after the forming and is not recrystallized, recovered, and/or (dynamically) recrystallized having a grain size below 300 &#x3bc;m. The pre-product is pickled, then cold-formed to produce a film having 10-600 &#x3bc;m end thickness and a deformation ratio greater than 90%. The film is cut into 5-300 mm strips, annealed 1 second to 5 hours under protection gas between 600 and 1200&#xb0; C. in a continuous furnace, then recrystallized to have a high cubic texture proportion.

Method for producing a metal film

A method for producing a metal film from an over 50% nickel alloy melts more than one ton of the alloy in a furnace, followed by VOD or VLF system treatment, then pouring off to form a pre-product, followed by re-melting by VAR and/or ESU. The pre-product is annealed 1-300 hours between 800 and 1350&#xb0; C. under air or protection gas, then hot-formed between 1300 and 600&#xb0; C., such that the pre-product then has 1-100 mm thickness after the forming and is not recrystallized, recovered, and/or (dynamically) recrystallized having a grain size below 300 &#x3bc;m. The pre-product is pickled, then cold-formed to produce a film having 10-600 &#x3bc;m end thickness and a deformation ratio greater than 90%. The film is cut into 5-300 mm strips annealed 1 second to 5 hours under protection gas between 600 and 1200&#xb0; C. in a continuous furnace, then recrystallized to have a high cubic texture proportion.

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Altena, Germany

Nicole De Boer