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WO1996027686A1 - Alliages ameliores pour pieces coulees - Google Patents

Alliages ameliores pour pieces coulees Download PDF

Info

Publication number
WO1996027686A1
WO1996027686A1 PCT/US1996/002749 US9602749W WO9627686A1 WO 1996027686 A1 WO1996027686 A1 WO 1996027686A1 US 9602749 W US9602749 W US 9602749W WO 9627686 A1 WO9627686 A1 WO 9627686A1
Authority
WO
WIPO (PCT)
Prior art keywords
alloy
cast
iron
improved low
low iron
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.)
Ceased
Application number
PCT/US1996/002749
Other languages
English (en)
Inventor
James R. Van Wert
Judith A. Nemetz-Kelso
Donald P. Hill
Jen C. Lin
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.)
Alcoa Corp
Original Assignee
Aluminum Company of America
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 Aluminum Company of America filed Critical Aluminum Company of America
Priority to AU53007/96A priority Critical patent/AU5300796A/en
Publication of WO1996027686A1 publication Critical patent/WO1996027686A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent

Definitions

  • alloy composition does not address the independent limitation to die life caused by physical erosion from the flow of molten metal. Physical erosion is a separate problem that is best addressed through die design modifications and improvements to casting process parameters. A solution to the difficulties attendant physical erosion are beyond the scope of the instant invention.
  • This invention is concerned with: providing aluminum alloys ideally suited for use in metal mold operations, including, for example, squeeze casting and die casting operations; providing improved, low iron content aluminum alloys that enhance die tool life in a die casting operation; and providing improved cast products and components consisting of an improved low iron aluminum alloy cast members that ideally are suited for frames, subframes, and frame members in vehicle primary structures or secondary structures, as well as various component parts for a variety of applications, including transportation products.
  • the alloy composition is formulated to contain about 0.10 to 0.35 wt. % magnesium, preferably about 0.15 to 0.20 wt. % magnesium, about 8.50 to 11.00 wt. % silicon, preferably about 9.5 to 10.5 wt. % silicon, about 0.40 to 0.80 wt. % manganese, preferably about 0.6 wt. % manganese, and with preferably less than 0.50 wt. % iron, the balance substantially aluminum and incidental elements and impurities, such as strontium, sodium, and antimony for modification of the silicon morphology.
  • the cast component upon completion of the casting operation, is quenched to cool it sufficiently to permit the trimming of the cast component in a trim die.
  • the cast product can be subjected to heat treatment and aging in order to obtain a product that demonstrates desired properties .
  • the alloys of this invention are characterized by a surprisingly reduced level of the chemical dissolution that causes erosion of the die during die casting operations.
  • aluminum alloy products were made having the compositions shown in Table I. Each of these examples demonstrated the enhanced tool life described in detail below.
  • the unexpected benefit of a reduced level of erosion of the die during die casting operations is obtained due to this invention's levels of iron and magnesium compared to existing low iron alloys.
  • the manganese is believed to provide improved die life when casting Al-Si alloys with low Fe content.
  • the surface of H13 steel plugs placed in a historically high erosion region of an ejector pulldown of a casting die is illustrative of the erosion caused by chemical dissolution that the die encounters during casting operations. Die erosion is evident by the presence of dissolution pits in the steel surface after casting 500 shots with existing low Fe alloys, i.e., low Mn levels.
  • the alloy contains approximately 0.10 to 0.50 wt. % iron and 0.40 to 0.80 wt. % manganese.
  • the alloy contains a total of no more than preferably 0.90 wt. % iron plus manganese. So that within the parameters set out above, as the weight percent of iron increases, the weight percent of manganese decreases, the total level of 0.90 wt. % of iron and manganese is maintained. Likewise, as the weight percent of manganese increases, the weight percent of iron decreases in order to maintain the preferred range.
  • an alloy commercially available from the assignee of the instant invention and disclosed in U.S. Patent No. 5,076,344 fails to demonstrate the reduced die tooling chemical erosion that is unexpectedly obtained through the use of the instant invention.
  • the improved performance of the instant alloy is believed to be a function of a lower iron solubility in the Mn containing interdendritic liquid during solidification.
  • the lower solubility in the instant alloy results in a slower chemical dissolution rate of the steel surface.
  • a. Percentages for a composition refer to % by weight.
  • b. The term "ingot-derived” means solidified from liquid metal by a known or subsequently developed casting process rather than through powder metallurgy techniques. This term shall include, but not be limited to, direct chill casting, electromagnetic casting, spray casting and any variations thereof, c.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Alliage de fonderie particulièrement adapté à la fabrication de pièces brutes, par exemple, de pièces de châssis ou de faux-châssis de véhicule, comprenant entre 0,15 et 0,35 % environ en masse de magnésium, entre 8,50 et 11,00 % environ en masse de silicium, entre 0,40 et 0,80 % environ en masse de manganèse, et de préférence moins de 0,50 % environ en masse de fer, le restant étant sensiblement constitué d'aluminium et d'éléments accidentels ou d'impuretés, notamment strontium, sodium et antimoine, pour la modification de la morphologie du silicium. L'alliage est généralement solidifié de façon à donner des produits de type lingot par coulée continue ou semi-continue, sous une forme adaptée à la refonte, généralement sous forme de billettes. Cet alliage, malgré sa faible teneur en fer, permet de réduire l'usure par érosion des coquilles.
PCT/US1996/002749 1995-03-03 1996-02-29 Alliages ameliores pour pieces coulees Ceased WO1996027686A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53007/96A AU5300796A (en) 1995-03-03 1996-02-29 Improved alloy for cast components

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39781695A 1995-03-03 1995-03-03
US08/397,816 1995-03-03

Publications (1)

Publication Number Publication Date
WO1996027686A1 true WO1996027686A1 (fr) 1996-09-12

Family

ID=23572747

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/002749 Ceased WO1996027686A1 (fr) 1995-03-03 1996-02-29 Alliages ameliores pour pieces coulees

Country Status (2)

Country Link
AU (1) AU5300796A (fr)
WO (1) WO1996027686A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421735A (en) * 2004-12-28 2006-07-05 Denso Corp Aluminium-silicon casting alloy
EP1683881A1 (fr) * 2005-01-25 2006-07-26 Brunswick Corporation Alliage du type Al-Si ayant une tendence reduite de brazage aux moules pour coulée sous pression
US7347905B1 (en) 2003-05-02 2008-03-25 Brunswick Corporation Aluminum-silicon alloy having reduced microporosity and method for casting the same
US20110061771A1 (en) * 2008-02-28 2011-03-17 Georg Fischer Dienstleistungen Gmbh Process for heat-treating and coating a component and component produced by the process
CN108823356A (zh) * 2018-06-15 2018-11-16 甘肃东兴铝业有限公司 一种脱氧用铝铁合金的生产方法
US11584977B2 (en) 2015-08-13 2023-02-21 Alcoa Usa Corp. 3XX aluminum casting alloys, and methods for making the same
CN116287882A (zh) * 2023-01-29 2023-06-23 宁波合力科技股份有限公司 一种铸态高导热强韧铝合金及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947121A (en) * 1932-10-04 1934-02-13 Nat Smelting Co Aluminum base alloys
US4104089A (en) * 1976-07-08 1978-08-01 Nippon Light Metal Company Limited Die-cast aluminum alloy products
GB1529305A (en) * 1974-11-15 1978-10-18 Alcan Res & Dev Method of producing metal alloy products

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947121A (en) * 1932-10-04 1934-02-13 Nat Smelting Co Aluminum base alloys
GB1529305A (en) * 1974-11-15 1978-10-18 Alcan Res & Dev Method of producing metal alloy products
US4104089A (en) * 1976-07-08 1978-08-01 Nippon Light Metal Company Limited Die-cast aluminum alloy products

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE CHEMICAL ABSTRACT, (Columbus, Ohio, USA), AN 91:25685; & GB,A,1 529 305, (MORRIS et al.), 18.10.78. *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7347905B1 (en) 2003-05-02 2008-03-25 Brunswick Corporation Aluminum-silicon alloy having reduced microporosity and method for casting the same
US7666353B2 (en) 2003-05-02 2010-02-23 Brunswick Corp Aluminum-silicon alloy having reduced microporosity
GB2421735A (en) * 2004-12-28 2006-07-05 Denso Corp Aluminium-silicon casting alloy
GB2421735B (en) * 2004-12-28 2008-10-15 Denso Corp Aluminium alloy for die castings and production process of aluminium alloy castings
EP1683881A1 (fr) * 2005-01-25 2006-07-26 Brunswick Corporation Alliage du type Al-Si ayant une tendence reduite de brazage aux moules pour coulée sous pression
US20110061771A1 (en) * 2008-02-28 2011-03-17 Georg Fischer Dienstleistungen Gmbh Process for heat-treating and coating a component and component produced by the process
US11584977B2 (en) 2015-08-13 2023-02-21 Alcoa Usa Corp. 3XX aluminum casting alloys, and methods for making the same
CN108823356A (zh) * 2018-06-15 2018-11-16 甘肃东兴铝业有限公司 一种脱氧用铝铁合金的生产方法
CN116287882A (zh) * 2023-01-29 2023-06-23 宁波合力科技股份有限公司 一种铸态高导热强韧铝合金及其制备方法

Also Published As

Publication number Publication date
AU5300796A (en) 1996-09-23

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