WO2010068009A3 - Method of suppressing grain growth in al-zn-mg-based aluminum alloy billet for thixoextrusion - Google Patents

Method of suppressing grain growth in al-zn-mg-based aluminum alloy billet for thixoextrusion Download PDF

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Publication number
WO2010068009A3
WO2010068009A3 PCT/KR2009/007298 KR2009007298W WO2010068009A3 WO 2010068009 A3 WO2010068009 A3 WO 2010068009A3 KR 2009007298 W KR2009007298 W KR 2009007298W WO 2010068009 A3 WO2010068009 A3 WO 2010068009A3
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum alloy
grain growth
billet
alloy billet
thixoextrusion
Prior art date
Application number
PCT/KR2009/007298
Other languages
French (fr)
Korean (ko)
Other versions
WO2010068009A2 (en
Inventor
임수근
김태훈
심성용
Original Assignee
경상대학교 산학협력단
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 경상대학교 산학협력단 filed Critical 경상대학교 산학협력단
Publication of WO2010068009A2 publication Critical patent/WO2010068009A2/en
Publication of WO2010068009A3 publication Critical patent/WO2010068009A3/en

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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
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
    • B22D21/04—Casting aluminium or magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/003—Aluminium alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/007—Semi-solid pressure die casting
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Of Metal (AREA)

Abstract

The present invention relates to a method of suppressing grain growth in an AL-ZN-MG-based aluminum alloy billet for thixoextrusion which is characterized by comprising a Sc-adding step of adding Sc of 0.05~0.15% to molten metal, and a heating step including more than 3 steps of heating treatment processes for the billet moulded from the molten metal. Here, Sc may be added to the molten metal as a master alloy of Al-2 weight percent, and there may be 5 to 10 minutes of sustain time after completion of each heating process. The grain growth rate of the aluminum alloy billet manufactured according to the method of the present invention is below 10% based on the area of the initial grain. Therefore, the method of the present invention is economical because the AL-ZN-MG-based aluminum alloy billet having the low grain growth rate can be manufactured without an additional equipment or cost. Besides, the method offers a billet that has a fine and uniform grain on the inside and the outside.
PCT/KR2009/007298 2008-12-09 2009-12-08 Method of suppressing grain growth in al-zn-mg-based aluminum alloy billet for thixoextrusion WO2010068009A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0124740 2008-12-09
KR1020080124740A KR101102139B1 (en) 2008-12-09 2008-12-09 Method for Inhibiting Grain Growth of Al-Zn-Mg Based Aluminiun Alloyed Billet for Thixo-Extrusion

Publications (2)

Publication Number Publication Date
WO2010068009A2 WO2010068009A2 (en) 2010-06-17
WO2010068009A3 true WO2010068009A3 (en) 2010-09-23

Family

ID=42243196

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/007298 WO2010068009A2 (en) 2008-12-09 2009-12-08 Method of suppressing grain growth in al-zn-mg-based aluminum alloy billet for thixoextrusion

Country Status (2)

Country Link
KR (1) KR101102139B1 (en)
WO (1) WO2010068009A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102266847B1 (en) 2019-04-15 2021-06-21 부경대학교 산학협력단 Method for manufacturing billet for plastic working used for preparing composite material and billet manufactured thereby

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040025981A1 (en) * 2000-12-22 2004-02-12 Tack William Troy Method for producing lightweight alloy stock for impact extrusion
JP2006348358A (en) * 2005-06-17 2006-12-28 Mitsubishi Alum Co Ltd Aluminum-alloy extruded material for heat-exchanger, and flat tube with multi-holes for heat-exchanger and header for heat-exchanger using the same
KR20080018571A (en) * 2006-08-25 2008-02-28 경상대학교산학협력단 High performamce al alloy for extrusion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040025981A1 (en) * 2000-12-22 2004-02-12 Tack William Troy Method for producing lightweight alloy stock for impact extrusion
JP2006348358A (en) * 2005-06-17 2006-12-28 Mitsubishi Alum Co Ltd Aluminum-alloy extruded material for heat-exchanger, and flat tube with multi-holes for heat-exchanger and header for heat-exchanger using the same
KR20080018571A (en) * 2006-08-25 2008-02-28 경상대학교산학협력단 High performamce al alloy for extrusion

Also Published As

Publication number Publication date
KR20100066089A (en) 2010-06-17
KR101102139B1 (en) 2012-01-02
WO2010068009A2 (en) 2010-06-17

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