EP2295608A1 - Auf aluminium basierendes kornverfeinerungsmittel - Google Patents

Auf aluminium basierendes kornverfeinerungsmittel Download PDF

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Publication number
EP2295608A1
EP2295608A1 EP09765942A EP09765942A EP2295608A1 EP 2295608 A1 EP2295608 A1 EP 2295608A1 EP 09765942 A EP09765942 A EP 09765942A EP 09765942 A EP09765942 A EP 09765942A EP 2295608 A1 EP2295608 A1 EP 2295608A1
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EP
European Patent Office
Prior art keywords
aluminium
titanium
grain refiner
zinc
content
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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.)
Granted
Application number
EP09765942A
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English (en)
French (fr)
Other versions
EP2295608B1 (de
EP2295608A4 (de
Inventor
Abinash Banerji
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.)
Asturiana de Aleaciones SA
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Asturiana de Aleaciones SA
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Application filed by Asturiana de Aleaciones SA filed Critical Asturiana de Aleaciones SA
Publication of EP2295608A1 publication Critical patent/EP2295608A1/de
Publication of EP2295608A4 publication Critical patent/EP2295608A4/de
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—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
    • 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
    • C22C21/00—Alloys based on aluminium
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent

Definitions

  • the invention refers to an aluminium-based grain refiner or refining agent.
  • the purpose of the invention focuses on a new aluminium alloy (also called “master alloy”) that contains aluminium, zinc, titanium and carbon, which is obtained or synthesized by means of aluminium fusion and the subsequent addition of titanium, zinc and carbon.
  • master alloy a new aluminium alloy
  • the melted alloy is moulded by casting into the desired shape.
  • the microstructure of the master alloy is comprised of a matrix of alpha aluminium, intermetallic phase of TiAl 3 and fine particles (particle size within the interval between nm and a few ⁇ m) of a ternary compound of titanium-zinc-carbon.
  • This quaternary master alloy is to refine the grain of the aluminium and its alloys.
  • aluminium grain refining and that of its alloys is a widely used industrial practice.
  • the refiner of standard commercial grain is the master alloy of AI-Ti-B, which contains particles of TiB 2 and which is available commercially with different contents of Ti and of B.
  • the most commonly used master alloy is the Al-5%Ti-1%B in the form of rods (percentage compositions in weight unless otherwise indicated).
  • Dr. Abinash Banerji developed a boron-free ternary grain Al-Ti-C refiner that contains particles of TiC, which form nuclei of aluminium grains (Dr. Abinash Banerji, Doctoral Thesis at the Technical University of Berlin, 1987).
  • the Al-Ti-C grain refiner has been produced commercially worldwide by various manufacturers, although the Al-Ti-C master alloys are available with different contents of Ti and C.
  • the commonly used master alloy however, has an approximate composition of Al-3%Ti-0.2%C.
  • the Al-Ti-C grain refiner available up to now has not been capable of solving effectively the problems associated with the conventional Al-Ti-B grain refiner, since greater quantities are needed to be added to obtain a grain size level similar to that obtained with the commercial Al-Ti-B grain refiner.
  • the purpose of this invention is focused on developing another refiner that exceeds the performance of the Al-Ti-C grain refiners commercially available up to now, and that efficiently solves the well-known problems associated with the conventional Al-Ti-B grain refiner, having to point out that the applicant does not know of any alloy or any aluminium-based master alloy that has been produced that contains zinc, titanium and carbon and that shows the capacity of refining the grain, such as that which is claimed in this invention.
  • the grain refiner that is subject of the invention is produced as follows:
  • pure zinc or an alloy that contains zinc is added to the melted mass followed by carbon powder which can be graphite or amorphous carbon.
  • the usual process is for the addition of the titanium to be followed by zinc and carbon, although the sequence of the addition of the elements is not a limitation for the invention.
  • the addition can be of the three elements together or of one after the other.
  • the holding time needed for the alloy in the furnace after all the elements have been added is usually between 30 and 60 minutes so that the complete reaction of the three elements produces the ternary carbide particles of titanium, zinc and carbon.
  • the holding time will depend on the composition of the casing, on its volume, on the fusion temperature and the type of furnace. In the case of fusion by induction, a stirring effect can reduce the holding time.
  • the master alloy obtained is cast with the usual procedure in "waffles", blocks or bars that can be subsequently processed in the form of rods or wire. In accordance with the state of the art, continuous casting equipment can be used directly along with a rolling device in order to process directly the master alloy in rolls of bars or wire.
  • the master alloy is apt for use in grain refining of aluminium and of its alloys. It can be used in the form of ingots, bars or rods according to the grain refining techniques.
  • microstructure of the master alloy obtained by means of the described procedure contains the three following phases:
  • the titanium content is at least 1% and at the most 20%
  • the carbon content is at least 0.01% (100 ppm) and at the most 3%
  • the zinc content is at least 1%.
  • Fig. 1 and 2 the standard microstructure is presented of an Al-6%Zn-3.5%Ti-0.4%C alloy obtained in form of a rod.
  • this descriptive report is accompanied by some photographs in which is illustrated, but not limited to the typical microstructure and the results obtained with a grain refiner with a composition of Al-6%Zn-3.5%Ti-0.4%C, such as that which is the subject of this invention, according to the principles of the claims.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP09765942.9A 2008-06-11 2009-06-10 Auf aluminium basierendes kornverfeinerungsmittel Not-in-force EP2295608B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200801768A ES2330713B2 (es) 2008-06-11 2008-06-11 Afinador de grano de base aluminio.
PCT/ES2009/000326 WO2009153369A1 (es) 2008-06-11 2009-06-10 Afinador de grano de base aluminio

Publications (3)

Publication Number Publication Date
EP2295608A1 true EP2295608A1 (de) 2011-03-16
EP2295608A4 EP2295608A4 (de) 2012-08-08
EP2295608B1 EP2295608B1 (de) 2015-01-07

Family

ID=41352383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09765942.9A Not-in-force EP2295608B1 (de) 2008-06-11 2009-06-10 Auf aluminium basierendes kornverfeinerungsmittel

Country Status (6)

Country Link
US (1) US20110165014A1 (de)
EP (1) EP2295608B1 (de)
CN (1) CN102066593B (de)
BR (1) BRPI0915361A2 (de)
ES (1) ES2330713B2 (de)
WO (1) WO2009153369A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105132744B (zh) * 2015-09-29 2017-03-08 济南大学 含有带孔洞或凹槽的锆‑钛‑铝‑锌四元化合物粒子的锌‑铝基中间合金及其制备方法
CN106591617A (zh) * 2016-12-22 2017-04-26 哈尔滨东盛金属材料有限公司 用于铝合金的锰添加剂及其制备方法
JP7062464B2 (ja) * 2018-02-21 2022-05-06 Ｄｏｗａメタルテック株式会社 アルミニウム－セラミックス接合基板およびその製造方法
CN110129640B (zh) * 2019-06-28 2020-05-05 江西理工大学 一种增材制造用7000系铝合金线材及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050238529A1 (en) * 2004-04-22 2005-10-27 Lin Jen C Heat treatable Al-Zn-Mg alloy for aerospace and automotive castings

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8505904D0 (en) * 1985-03-01 1985-04-11 London Scandinavian Metall Producing titanium carbide
DE3679263D1 (de) 1985-03-01 1991-06-20 London Scandinavian Metall Verfahren zur herstellung einer titankarbidpartikel enthaltenden legierung.
CA1289748C (en) 1985-03-01 1991-10-01 Abinash Banerji Producing titanium carbide
JPH02121452A (ja) 1988-10-31 1990-05-09 Toshiba Corp 電子交換機システム
GB9701819D0 (en) * 1997-01-29 1997-03-19 Alpha Fry Ltd Lead-free tin alloy
WO1999027146A1 (en) * 1997-11-20 1999-06-03 Tübitak-Marmara Research Center In situ process for producing an aluminium alloy containing titanium carbide particles
US20100221141A1 (en) * 2005-06-07 2010-09-02 Babette Tonn Aluminum plain bearing alloy
CN101294247B (zh) * 2007-04-26 2010-11-24 中南大学 铝合金细化剂及用该细化剂制备的铝合金

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050238529A1 (en) * 2004-04-22 2005-10-27 Lin Jen C Heat treatable Al-Zn-Mg alloy for aerospace and automotive castings

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009153369A1 *
YU L ET AL: "Instability of TiC and TiAl3 compounds in Al-10Mg and Al-5Cu alloys by addition of Al-Ti-C master alloy", JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, MINERAL, METALLURGY, MATERIAL,, vol. 13, no. 2, 1 April 2006 (2006-04-01), pages 144-148, XP022934593, ISSN: 1005-8850, DOI: 10.1016/S1005-8850(06)60032-7 [retrieved on 2006-04-01] *

Also Published As

Publication number Publication date
EP2295608B1 (de) 2015-01-07
WO2009153369A1 (es) 2009-12-23
BRPI0915361A2 (pt) 2015-11-03
CN102066593A (zh) 2011-05-18
EP2295608A4 (de) 2012-08-08
CN102066593B (zh) 2013-08-07
ES2330713A1 (es) 2009-12-14
ES2330713B2 (es) 2010-04-19
US20110165014A1 (en) 2011-07-07

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