EP1114875A1 - Procédé de production alliage d'mère aluminium-titanium-boron destiné à l'affinage du grain - Google Patents

Procédé de production alliage d'mère aluminium-titanium-boron destiné à l'affinage du grain Download PDF

Info

Publication number
EP1114875A1
EP1114875A1 EP99811137A EP99811137A EP1114875A1 EP 1114875 A1 EP1114875 A1 EP 1114875A1 EP 99811137 A EP99811137 A EP 99811137A EP 99811137 A EP99811137 A EP 99811137A EP 1114875 A1 EP1114875 A1 EP 1114875A1
Authority
EP
European Patent Office
Prior art keywords
master alloy
melt
al3ti
particles
aluminum
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Withdrawn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
EP99811137A
Other languages
German (de)
English (en)
Inventor
Walter Hotz
Heinrich Homberger
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
Alusuisse Technology and Management Ltd
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 Alcan Technology and Management Ltd, Alusuisse Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP99811137A priority Critical patent/EP1114875A1/fr
Priority to CA002394485A priority patent/CA2394485A1/fr
Priority to PCT/EP2000/012015 priority patent/WO2001042521A1/fr
Priority to DE50005366T priority patent/DE50005366D1/de
Priority to US10/148,659 priority patent/US20030075020A1/en
Priority to EP00983193A priority patent/EP1242641B1/fr
Publication of EP1114875A1 publication Critical patent/EP1114875A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • 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
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys

Definitions

  • the invention relates to a process for producing a grain refining agent based on an aluminum-titanium-boron master alloy by introducing Ti and B-containing starting materials into an aluminum melt to form TiB 2 particles and allowing this master alloy melt to solidify.
  • EP-A-0396389 describes a process for the continuous production of a Al-Ti-B grain refining alloy discloses in which Ti and B-containing starting materials added in a reaction zone of an aluminum melt be, the melt being stirred in the reaction zone. A mixture the alloy formed becomes continuous together with the reaction products fed to a cleaning zone in which the slag with reaction products is collected on the surface of the melt and removed. The grain refining alloy formed is continuously removed from the cleaning station led to a casting station, in which the melt continuously is cast in one strand.
  • the cast strand can either directly have the desired strand or wire thickness, or it can be further Processing by rolling or extrusion to the desired grain refining material are processed.
  • the TiB 2 particles in the AI-Ti-B grain refining agents known today have a strong tendency to form agglomerates. This results in a reduced effect of the grain refining agent. Further disadvantages result from agglomerates and inclusions, which can lead to errors in the end product. Examples include gray lines, holes, material separations and stringers.
  • agglomerates occur preferentially on low-melting salts such as KF and NaCl as well as on oxide skins and can thereby further enlarge. As such, the agglomerates are "soft", can force themselves through filters and as such end up in a cast strand.
  • the invention is therefore based on the object of providing a process for the preparation of an Al-Ti-B grain refining agent with which the formation of agglomerates of TiB 2 particles can be largely prevented and existing agglomerates can be deagglomerated.
  • the object is achieved in a method of the type mentioned at the outset in that the master alloy between the liquidus temperature of the Al 3 Ti phase and the solidus temperature of the master alloy is set in motion for a sufficient period of time for the dispersion of the TiB 2 particles and simultaneously with a first cooling rate is cooled, so that the TiB 2 particles act as nuclei for the Al 3 Ti phase that forms below the liquidus temperature and the surface of the TiB 2 particles are at least partially covered with a coating of Al 3 Ti, and that the Sub-alloy is subsequently cooled below the solidus temperature of the master alloy with a second cooling rate that is higher than the first cooling rate.
  • moving the melt is understood to mean all process steps which are suitable for largely preventing the formation of agglomerates of TiB 2 particles and for deagglomerating existing agglomerates. These include mechanical stirring and vibrating processes with high revolutions of the agitator as well as the generation of cavitation, ie the formation of bubbles, the implosion of which generates shock waves that lead to the deagglomeration of agglomerated particles.
  • the latter methods include, for example, ultrasound treatment and vibration using a magnetohydrodynamic resonator.
  • the grain refining agent produced by the process according to the invention brings about an improved and more homogeneous effect of the grain refining agent, particularly in the grain refining of cast formats made of aluminum alloys, through a more homogeneous distribution of the individual TiB 2 particles, a better one
  • the master alloy is preferably set in motion before the liquidus temperature of the Al 3 Ti phase is undershot.
  • the effect of the grain refining agent produced according to the invention is shown by the fact that the individual, approximately 0.5 to 5 ⁇ m large TiB 2 particles have an excellent germination effect as a result of a coating formed from a thin Al 3 Ti layer, and the particles are isolated and not as agglomerates act, so that a comparable grain refinement can be achieved with a significantly smaller amount of grain refining agent than with grain refining agents according to the prior art.
  • the liquidus temperature of the Al 3 Ti phase is dropped below prematurely. This is especially the case if a master alloy with a high Ti content and a correspondingly higher liquidus temperature is produced or if it is already solidified
  • the second cooling rate is preferably greater than 1 ° C / sec, in particular greater than 5 ° C / sec and particularly preferably greater than 10 ° C / sec.
  • the master alloy melt can be cast into any format. However, preference is given to casting by vertical or horizontal continuous casting continuously produced strand. This strand can either already in the format of the rod or as desired grain refinement Cast wire material or in a further operation by rolling or presses to be processed into bar or wire material. Vertically cast, large-sized strands are mainly processed by extrusion. Horizontal continuous casting of formats is preferred relatively small diameter because this process is continuous Manufacturing allowed. The horizontally cast continuous casting formats are preferably by rolling to the desired bar or wire material processed.
  • a master alloy produced using the method according to the invention has a composition whose total titanium content exceeds the stoichiometric ratio of TiB 2 .
  • a preferred alloy used contains titanium and boron in a weight ratio of 5: 2 to 10: 1.
  • the process is suitable for producing master alloys with 0.15 to 20% by weight of titanium and 0.01 to 4% by weight of boron, it has proven to be advantageous if the master alloy contains 0.3 to 5, preferably 0.5 to 2,% by weight. % Ti and 0.02 to 1, preferably 0.05 to 0.5 wt .-% B contains.
  • the method according to the invention is particularly suitable for production of grain refining agents for the grain refining of aluminum and aluminum alloys.
  • Fig. 1 is the schematic Process flow shown for the production of an Al-Ti-B master alloy drawn in for grain refinement of aluminum alloys.
  • the illustration A of the alloy phases to the left of the 0.5% Ti line shows the processes during the preparation of an already solidified master alloy, the illustration B to the right of the 0.5% Ti line shows the processes during the solidification of the master alloy.
  • the master alloy melt contains TiB 2 particles in partially agglomerated form. Even before the liquidus temperature T L Al3Ti is undershot and until shortly before the solidus temperature T S v of the pre-alloy of the Al 3 Ti phase is reached, the partially agglomerated TiB 2 particles are deagglomerated by a strong melt movement using ultrasound treatment at a frequency of, for example, 25 kHz and distributed homogeneously. Simultaneous controlled cooling with a first cooling rate v 1 of, for example, 0.5 ° C./sec, causes the deposition of a thin layer of the Al 3 Ti phase on the parallel surfaces of the TiB 2 particles and at the same time the formation of coarse-grained Al 3 Ti particles prevented.
  • a first cooling rate v 1 of, for example, 0.5 ° C./sec
  • a system 10 shown in FIG. 2 for producing an Al-Ti-B master alloy for refining aluminum alloys comprises a reaction vessel 12 with an inlet channel 14 in its upper region and an outlet channel 16 in its lower region.
  • the reaction vessel 12 is surrounded by an induction motor 18 as an electromagnetic stirring device with which the aluminum melt 20 located in the reaction vessel 12 is stirred vigorously to form a vortex 22.
  • Ti- and B-containing salts such as K 2 TiF 6 and KBF 4 are guided in the direction of arrow 24 into the vortex 22, which draws the salts into the aluminum melt 20.
  • the aluminum melt 20 with the reaction products is shown below through the outlet duct 16 via a further inlet duct 26 into the upper one Area of an aftertreatment boiler 28 out.
  • Another electromagnetic Stirring device 30 in the lower area of the aftertreatment boiler 28 leads to a lower turbulent zone 32 and an upper calm Zone 34.
  • the slag 36 formed by reaction products is over the removal opening 38 is removed from the aftertreatment boiler 28.
  • the cleaned aluminum melt 20 with the elements titanium and boron contained therein is fed as a pre-alloy in the lower region of the aftertreatment boiler 28 via a casting trough 38 to a mold, not shown in the drawing, of a horizontal continuous casting machine.
  • Two ultrasonic transmitters 40, 42 are arranged in the region of the casting trough 38, the sonotrodes 44, 46 of which are immersed in the melt.
  • An induction heater 48 arranged below the casting trough 38 serves to heat the melt if its temperature should have already dropped below the liquidus temperature T L Al3Ti of the Al 3 Ti phase when the melt flows from the aftertreatment boiler 28 into the casting trough 38.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
EP99811137A 1999-12-10 1999-12-10 Procédé de production alliage d'mère aluminium-titanium-boron destiné à l'affinage du grain Withdrawn EP1114875A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP99811137A EP1114875A1 (fr) 1999-12-10 1999-12-10 Procédé de production alliage d'mère aluminium-titanium-boron destiné à l'affinage du grain
CA002394485A CA2394485A1 (fr) 1999-12-10 2000-11-30 Procede de fabrication d'un prealliage d'aluminium-titane-bore en tant que moyen d'affinage du grain
PCT/EP2000/012015 WO2001042521A1 (fr) 1999-12-10 2000-11-30 Procede de fabrication d'un prealliage d'aluminium-titane-bore en tant que moyen d'affinage du grain
DE50005366T DE50005366D1 (de) 1999-12-10 2000-11-30 Verfahren zur herstellung einer aluminium-titan-bor-vorlegierung als kornfeinungsmittel
US10/148,659 US20030075020A1 (en) 1999-12-10 2000-11-30 Method for producing an aluminum-titanium-boron prealloy for use as a grain refiner
EP00983193A EP1242641B1 (fr) 1999-12-10 2000-11-30 Procede de fabrication d'un prealliage d'aluminium-titane-bore en tant que moyen d'affinage du grain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99811137A EP1114875A1 (fr) 1999-12-10 1999-12-10 Procédé de production alliage d'mère aluminium-titanium-boron destiné à l'affinage du grain

Publications (1)

Publication Number Publication Date
EP1114875A1 true EP1114875A1 (fr) 2001-07-11

Family

ID=8243179

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99811137A Withdrawn EP1114875A1 (fr) 1999-12-10 1999-12-10 Procédé de production alliage d'mère aluminium-titanium-boron destiné à l'affinage du grain
EP00983193A Expired - Lifetime EP1242641B1 (fr) 1999-12-10 2000-11-30 Procede de fabrication d'un prealliage d'aluminium-titane-bore en tant que moyen d'affinage du grain

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00983193A Expired - Lifetime EP1242641B1 (fr) 1999-12-10 2000-11-30 Procede de fabrication d'un prealliage d'aluminium-titane-bore en tant que moyen d'affinage du grain

Country Status (5)

Country Link
US (1) US20030075020A1 (fr)
EP (2) EP1114875A1 (fr)
CA (1) CA2394485A1 (fr)
DE (1) DE50005366D1 (fr)
WO (1) WO2001042521A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022984A1 (fr) * 2010-02-05 2011-03-03 新星化工冶金材料(深圳)有限公司 Procédé de régulation de la variation de la capacité de raffinage des grains de l'alliage al-ti-b par régulation du taux compression
CN110157935A (zh) * 2019-06-28 2019-08-23 上海大学 铸造铝硅合金用Al-V-B细化剂、其制备方法及应用

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200504376A2 (tr) * 2005-11-02 2008-05-21 T�B�Tak-T�Rk�Ye B�L�Msel Ve Tekn�K Ara�Tirma Kurumu Tane küçültücü ön alaşım üretmek için bir proses
CN105671350A (zh) * 2015-03-19 2016-06-15 中信戴卡股份有限公司 一种铝合金细化剂、其制备方法及用途
EP3162460A1 (fr) 2015-11-02 2017-05-03 Mubea Performance Wheels GmbH Pièce coulée en alliage léger et procédé de sa fabrication
RU2625375C2 (ru) * 2015-12-03 2017-07-13 Федеральное государственное бюджетное учреждение науки Институт металлургии Уральского отделения Российской академии наук (ИМЕТ УрО РАН) Способ получения композиционных сплавов и установка для его осуществления
CN107377914A (zh) * 2017-08-04 2017-11-24 江西金世纪特种焊接材料有限公司 一种铝合金焊接材料熔炼连铸设备
FR3082763A1 (fr) * 2018-06-25 2019-12-27 C-Tec Constellium Technology Center Procede de fabrication d une piece en alliage d aluminium
CN109371277A (zh) * 2018-12-11 2019-02-22 徐州宁铝业科技有限公司 一种用于铝合金熔炼的精炼剂及制备方法
CN110195168B (zh) * 2019-07-12 2021-01-01 东北大学 一种铝-钛-硼细化剂板的制备工艺
CN114959348B (zh) * 2022-06-09 2023-12-05 上海大学 一种高分散度Al-xMB2细化剂的制备方法和应用方法
CN115558821B (zh) * 2022-12-06 2023-03-10 北京航空航天大学 一种实现TiB2尺寸可控的Al-Ti-B细化剂制备方法
CN115976373B (zh) * 2022-12-30 2024-09-06 中山瑞泰铝业有限公司 一种铝合金材料的加工工艺及其应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785807A (en) * 1970-04-28 1974-01-15 Graenges Aluminium Ab Method for producing a master alloy for use in aluminum casting processes
US4612073A (en) * 1984-08-02 1986-09-16 Cabot Corporation Aluminum grain refiner containing duplex crystals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230754A (en) * 1991-03-04 1993-07-27 Kb Alloys, Inc. Aluminum master alloys containing strontium, boron, and silicon for grain refining and modifying aluminum alloys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785807A (en) * 1970-04-28 1974-01-15 Graenges Aluminium Ab Method for producing a master alloy for use in aluminum casting processes
US4612073A (en) * 1984-08-02 1986-09-16 Cabot Corporation Aluminum grain refiner containing duplex crystals

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
BUNN, A.M. (SCIENCE MUSEUM (LONDON)) ET AL: "Grain refinement by Al-Ti-B alloys in aluminium melts: a study of the mechanisms of poisoning by zirconium.", MATERIALS SCIENCE AND TECHNOLOGY (1999) 15, (10), 1115-1123, NUMERICAL DATA, GRAPHS, PHOTOMICROGRAPHS, 40 REF. ISSN: 0267-0836, XP002134789 *
BUNN, A.M. (UNIVERSITY OF CAMBRIDGE) ET AL: "Effects of transition metals on the potency of Al-Ti-B grain refiners.", SOLIDIFICATION PROCESSING 1997 (JULY 1997), 264-267, GRAPHS, 23 REF. UNIVERSITY OF SHEFFIELD. MAPPIN STREET, SHEFFIELD, S1 3JD, UK CONFERENCE: 4TH DECENNIAL INTERNATIONAL CONFERENCE ON SOLIDIFICATION PROCESSING, SHEFFIELD, UK, 7-10 JULY 1997 ISBN: 0-, XP002134788 *
BUNN, A.M. (UNIVERSITY OF CAMBRIDGE) ET AL: "Modelling of the effectiveness of Al-Ti-B refiners in commercial purity aluminium.", LIGHT METALS 1998 (1998), 963-968, GRAPHS, PHOTOMICROGRAPHS, 11 REF. MINERALS, METALS AND MATERIALS SOCIETY/AIME. 420 COMMONWEALTH DR., P.O. BOX 430, WARRENDALE, PA 15086, USA CONFERENCE: LIGHT METALS 1998, SAN ANTONIO, TX, USA, 15-19 FEB. 1998 ISBN:, XP002134790 *
SCHUMACHER, P. (UNIVERSITY OF OXFORD) ET AL: "New studies of nucleation mechanisms in aluminium alloys: implications fo grain refinement practice.", MATERIALS SCIENCE AND TECHNOLOGY (1998) 14, (5), 394-404, GRAPHS, PHOTOMICROGRAPHS, DIFFRACTION PATTERNS, 46 REF. ISSN: 0267-0836, XP002134787 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022984A1 (fr) * 2010-02-05 2011-03-03 新星化工冶金材料(深圳)有限公司 Procédé de régulation de la variation de la capacité de raffinage des grains de l'alliage al-ti-b par régulation du taux compression
GB2479852A (en) * 2010-02-05 2011-10-26 Sun Xing Chemical & Metallurg Materials Method for controlling variation of grain refining ability of al-ti-b alloy by controlling compression ratio
GB2479852B (en) * 2010-02-05 2012-02-08 Sun Xing Chemical & Metallurg Materials Shenzhen Co Ltd Method for controlling variations of Al-Ti-B alloy grain refinement ability through controlling compression ratio
CN110157935A (zh) * 2019-06-28 2019-08-23 上海大学 铸造铝硅合金用Al-V-B细化剂、其制备方法及应用
CN110157935B (zh) * 2019-06-28 2021-05-07 上海大学 铸造铝硅合金用Al-V-B细化剂、其制备方法及应用

Also Published As

Publication number Publication date
CA2394485A1 (fr) 2001-06-14
EP1242641B1 (fr) 2004-02-18
WO2001042521A8 (fr) 2001-07-12
US20030075020A1 (en) 2003-04-24
WO2001042521A1 (fr) 2001-06-14
DE50005366D1 (de) 2004-03-25
EP1242641A1 (fr) 2002-09-25

Similar Documents

Publication Publication Date Title
DE2119516C3 (de) Verfahren zur Herstellung einer Vorlegierung, die einer Aluminiumschmelze zum Zweck der Kornfeinung zugesetzt wird
DE3883087T2 (de) Aluminiumverbundlegierungen.
EP1242641B1 (fr) Procede de fabrication d'un prealliage d'aluminium-titane-bore en tant que moyen d'affinage du grain
DE69705917T2 (de) Verfahren zum Formen halbfester Metalle
DE2853202A1 (de) Verbessertes verfahren zur herstellung thixotroper aufschlaemmungen
DE69502867T2 (de) Hochfeste Aluminiumlegierung
DE69303417T2 (de) Metallmatrixverbundwerkstoff auf Aluminiumbasis
CH682402A5 (de) Verfahren zum Herstellen einer Flüssig-Fest-Metallegierungsphase mit thixotropen Eigenschaften.
DE69221117T2 (de) Verfahren zur herstellung einer giessbaren aluminium-basis-verbundlegierung
DE69014254T2 (de) Verfahren zur Herstellung einer Silicium enthaltenden Aluminiumlegierung.
DE4110145C2 (fr)
DE2514386A1 (de) Verfahren zur verbesserung der umformbarkeit von leichtmetall-legierungen
EP0554808B1 (fr) Procédé de fabrication des pièces métalliques
DE2229453C3 (de) Verfahren zur Herstellung einer zu vergießenden Flüssig-Fest-Metallphase
DE69708486T2 (de) Hochfeste und hochduktile Legierung auf Aluminiumbasis
DE69306453T2 (de) Hochfestes, gewalztes Blech aus Aluminiumlegierung und Verfahren zu seiner Herstellung
DE69020636T2 (de) Verfahren zur Herstellung einer Aluminium-Kornverfeinerer-Vorlegierung.
DE69314308T2 (de) Hochfeste und wärmebeständige Aluminiumlegierung, verdichteter und verfestigter Werkstoff daraus und Verfahren zur Herstellung
DE69215156T2 (de) Übereutektische Aluminium-Silicium Legierungen
DE69410952T2 (de) Verfahren zur Herstellung thixotroper Metalllegierungen
DE2041476A1 (de) Verfahren zur Erzeugung eines Festkoerpers aus einer fluessigen Masse durch in einer Richtung erfolgendes Erstarren
DE69301365T2 (de) Verdichteter und verfestigter Werkstoff aus einer hochfesten, hitzebeständigen Legierung auf Aluminiumbasis und Verfahren zu seiner Herstellung
DE2339747B2 (de) Verfahren zur herstellung einer fluessig-fest-legierungsphase ausserhalb der giessform fuer giessprozesse
DE10352453A1 (de) Verfahren zur Herstellung von Metall-Matrix-Verbundwerkstoffen
DE69223950T2 (de) Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Metallmatrixverbundmaterial

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALCAN TECHNOLOGY & MANAGEMENT AG

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20020112