EP1611980A1 - Procédé de production d'un affineur de grains pour métaux, affineur de grains et métal ou alliage métallique - Google Patents

Procédé de production d'un affineur de grains pour métaux, affineur de grains et métal ou alliage métallique Download PDF

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Publication number
EP1611980A1
EP1611980A1 EP05013728A EP05013728A EP1611980A1 EP 1611980 A1 EP1611980 A1 EP 1611980A1 EP 05013728 A EP05013728 A EP 05013728A EP 05013728 A EP05013728 A EP 05013728A EP 1611980 A1 EP1611980 A1 EP 1611980A1
Authority
EP
European Patent Office
Prior art keywords
metal
grain refining
metallic
refining agent
melt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05013728A
Other languages
German (de)
English (en)
Inventor
Norbert Hort
Karl Ulrich Prof. Dr. Kainer
Hans Priv.-Doz. Dr. Rer. Nat. Ferkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GKSS Forshungszentrum Geesthacht GmbH
Technische Universitaet Clausthal
Original Assignee
GKSS Forshungszentrum Geesthacht GmbH
Technische Universitaet Clausthal
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GKSS Forshungszentrum Geesthacht GmbH, Technische Universitaet Clausthal filed Critical GKSS Forshungszentrum Geesthacht GmbH
Publication of EP1611980A1 publication Critical patent/EP1611980A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the invention relates to a process for the preparation of a grain refining agent for metallic materials, in particular for the casting production of products made of metallic materials, a grain refining agent and a metal or metal alloy material.
  • metal materials or metallic materials are here meant materials of elemental metal and metal alloys.
  • Metallic materials in this sense and within the meaning of the invention are also starting materials for certain metallic materials for subsequent forming, for example. Wrought alloys, as they are prefabricated in particular magnesium materials.
  • the homogeneity of the metallic material In order to achieve high quality castings (primary products, semi-finished products, end products), the homogeneity of the metallic material must be sufficiently large and it must be achieved a very fine grain in order to achieve the desired high homogeneity can.
  • a grain refining agent with which the metallic materials can be influenced in the aforesaid sense in order to achieve a desired homogeneity.
  • no generally effective grain refining agent has been found for metallic materials which has the desired properties, thus far.
  • zirconium has been used for magnesium alloys as a grain refining agent, but these alloys must not contain Al, Si, Mn, Sn, Sb, Ni, Fe or Co.
  • C in the form of C 6 Cl 6 was also added to the metallic material in the melt. This component decomposes to form C and chlorine gas, where C then acts as a grain refining agent.
  • the advantage of the method according to the invention consists essentially in the fact that such a grain refining agent, since the nanoscale particles have been wetted with the metallic powder during the grinding process, the need for a first-time wetting of the refractory nanoparticles by the melt in a crucible and so far accompanying formation of an interface is complete deleted, since the particles are so to speak in the "pre-material" zwbenverbetzt already in advance.
  • the high-melting nanoparticles act as heterogeneous nucleators and thus cause a grain refinement. Their effect occurs essentially during the cooling of the melt, i. during and after pouring the melt on.
  • the resulting ground material (precursors, starting material) is subjected to a nanoscale particle wetted with the metallic powder a consolidation step in order to prepare this suitable for use in the various casting processes.
  • the pulverulent millbase produced according to the invention can also be used already in this form for certain casting processes, without being subjected to a subsequent consolidation step before addition to the metallic melt.
  • the consolidation can be carried out by pressing the ground material, advantageously by means of Pressing the ground material can be pressed in the form of pellets or rods.
  • These units of ground material consolidated in this way can then be packaged in a controlled manner but can also be measured and can thus be suitably dimensioned with regard to their weight and thus also be quantified in a suitable manner in a simple manner to the metallic melt.
  • the nanoscale particles can be chosen to be different in size, for example. In diameter in a range of 1 nm to 300 nm. Basically, gem. the invention, any material forming the nanoscale particles suitable, in particular nanoscale ceramic particles.
  • a predeterminable amount of a first agent can always be co-milled with a predeterminable amount of the metallic powder to selectively produce a configuration agent targeted for the subsequent metallic melt to which it is added should be trained.
  • the method can be carried out with nanocrystalline particles, which are also reactive with respect to the metal of the metallic powder, which thus react with the elements of the metallic materials or undergo reactions with the matrix of the elements of the metallic materials.
  • inert particles as nanoscale particles with the proviso that these are also suitable for acting as heterogeneous nucleators.
  • the grain refining agent produced by the process is capable of being added to the melt of a metal or metal alloy material to produce a large amount of material Homogeneity of the molten metal, as the task seeks to effect.
  • the grain refining agent may be added to the metallic melt in powdered and / or pellet form and / or in extruded form suitably and deposited quantified on the metallic material.
  • metal or metal alloy material homogeneously set with fine grain can not only be adjusted homogeneously by means of the grain refining agent according to the invention, but the introduction of the grain refining agent into the melt of the metal or metal alloy material also causes dispersion hardening of the melt, thus also according to the invention new dispersion materials can be produced.
  • the grain refining agent for metallic materials is prepared by initially nanoscale particles of a first agent are provided.
  • a metallic powder which may be any elemental metal or a metal alloy powder, is also provided.
  • the first agent with the metallic powder is subjected to a common grinding process. The grinding process is chosen continuously until the nanoscale particles are filled with the metallic powder.
  • the resulting regrind is the nanoscale grain refining agent obtained according to the invention.
  • This grain refining agent causes heterogeneous nucleation in the metallic melt to which the grain refining agent of the present invention is added to produce a homogeneous metal or metal alloy material.
  • nanoscale materials which form the nanoscale particles can be used, ie both metallic and nonmetallic.
  • Non-metallic, ie ceramic particles are, for example, Al 2 O 3 , Ce 2 O 3 , Y 2 O 3 or La 2 O 3 and nitrides such as TiN, BN (hexagonal) and carbides such as SiC.
  • the inventive method is particularly suitable for the production of a grain refining agent, which is added to Mg-containing metallic or metal alloy materials.
  • the grain refining agent produced according to the method can be portioned in a subsequent consolidation step, for example by pressing, in the form of pellets or strands.
  • both inert particles can be used, which do not react with the matrix of the metallic material, whether elemental metallic material or metal alloy material, and also particles which react with the matrix of the metallic material or the elements of the metal alloy material.
  • This can be stable products form that do not react. While in the former case an immediate grain refining by heterogeneous nucleation can be observed, heterogeneous nucleation in the case of reactive particles is due to newly formed nanoscale phases.
  • particle agglomeration is substantially completely avoided, so that by means of the grain refining agent according to the invention a new melting-metallurgical path is taken, which produces a grain-refined material as desired, and also a new dispersion material.
  • the grain refining agent according to the invention can in principle be used for all casting processes and is also excellently suitable for applications for the casting production of large-volume and thick-walled components. These are, for example, engine blocks or gearbox. Also, the configuration means according to the invention for the production of precursors, which are first prepared in a continuous casting process, which are then starting materials for wrought alloys.
  • b. shows the spectrum of the AZ91 starting material. The measurement was made on AZ91 powder. However, the use of AZ91 as cast would have been correct. This powder was produced by gas atomization. The individual particles have an average particle diameter of d 50 ⁇ 40 ⁇ m.
  • alloying components e.g. also use chips of the alloy.
  • the spectrum c. shows the spectrum of pure TiN nanopowder.
  • the spectrum d. shows the pelleted Vormatenal, which was melted and some time at a selected temperature of, for example. 700 ° C was maintained. It was then measured and cooled. TiN was not attacked by the melt, that is, the TiN remains stable.
EP05013728A 2004-06-28 2005-06-24 Procédé de production d'un affineur de grains pour métaux, affineur de grains et métal ou alliage métallique Withdrawn EP1611980A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410031367 DE102004031367A1 (de) 2004-06-28 2004-06-28 Verfahren zur Herstellung eines Kornfeinungsmittels für metallische Werkstoffe, Kornfeinungsmitel und Metall- oder Metallegerierungswerkstoff

Publications (1)

Publication Number Publication Date
EP1611980A1 true EP1611980A1 (fr) 2006-01-04

Family

ID=34937662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05013728A Withdrawn EP1611980A1 (fr) 2004-06-28 2005-06-24 Procédé de production d'un affineur de grains pour métaux, affineur de grains et métal ou alliage métallique

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Country Link
EP (1) EP1611980A1 (fr)
DE (1) DE102004031367A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018002714A1 (de) 2017-04-18 2018-10-18 Gabriele Trinkel Memristor Effekt System Netzwerk und Verfahren mit funktionalem Werkstoff
CN111014680A (zh) * 2019-12-12 2020-04-17 鼎镁（昆山）新材料科技有限公司 一种纳米粉末添加在有色金属与钢铁材料的方法
CN113441733A (zh) * 2021-06-29 2021-09-28 江苏飞跃机泵集团有限公司 一种保温硫磺泵叶轮增材制造过程中控形控性方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007058225A1 (de) 2007-12-03 2009-06-04 Volkswagen Ag Kornfeinungsmittel und Verfahren zum Herstellen des Kornfeinungsmittels

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033750A1 (fr) * 2001-10-15 2003-04-24 Groupe Minutia Inc. Agent de recuit d'affinage structural pour produits en fonte d'aluminium
WO2003095689A1 (fr) * 2002-05-14 2003-11-20 Groupe Minutia Inc. Agent d'affinage de grain pour produits coules en magnesium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033750A1 (fr) * 2001-10-15 2003-04-24 Groupe Minutia Inc. Agent de recuit d'affinage structural pour produits en fonte d'aluminium
WO2003095689A1 (fr) * 2002-05-14 2003-11-20 Groupe Minutia Inc. Agent d'affinage de grain pour produits coules en magnesium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018002714A1 (de) 2017-04-18 2018-10-18 Gabriele Trinkel Memristor Effekt System Netzwerk und Verfahren mit funktionalem Werkstoff
CN111014680A (zh) * 2019-12-12 2020-04-17 鼎镁（昆山）新材料科技有限公司 一种纳米粉末添加在有色金属与钢铁材料的方法
CN113441733A (zh) * 2021-06-29 2021-09-28 江苏飞跃机泵集团有限公司 一种保温硫磺泵叶轮增材制造过程中控形控性方法

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