WO1993019216A1 - Element mecanique - Google Patents

Element mecanique Download PDF

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Publication number
WO1993019216A1
WO1993019216A1 PCT/EP1993/000504 EP9300504W WO9319216A1 WO 1993019216 A1 WO1993019216 A1 WO 1993019216A1 EP 9300504 W EP9300504 W EP 9300504W WO 9319216 A1 WO9319216 A1 WO 9319216A1
Authority
WO
WIPO (PCT)
Prior art keywords
mass
rare earth
component according
magnesium
earth metals
Prior art date
Application number
PCT/EP1993/000504
Other languages
German (de)
English (en)
Inventor
Günter NEITE
Eberhard Schmid
Thomas Schulze
Kohei Kubota
Ruyuji Ninomiya
Günther RUDOLPH
Original Assignee
Metallgesellschaft Aktiengesellschaft
RUDOLPH, Margarete, Martha, Eva
RUDOLPH, Ulrike, Eva
RUDOLPH, Martin, Günther
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 Metallgesellschaft Aktiengesellschaft, RUDOLPH, Margarete, Martha, Eva, RUDOLPH, Ulrike, Eva, RUDOLPH, Martin, Günther filed Critical Metallgesellschaft Aktiengesellschaft
Publication of WO1993019216A1 publication Critical patent/WO1993019216A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0085—Materials for constructing engines or their parts
    • 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
    • C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/16—Fibres

Definitions

  • the invention relates to a machine component cast from a magnesium alloy containing 2 to 8 mass% of rare earth metals and subject to high thermal and mechanical loads, in particular the combustion chamber of
  • Internal combustion engine component such as pistons and cylinders.
  • magnesium alloys due to their relatively low density and good mechanical properties, have been gaining increasing interest as a construction material, especially in motor vehicle construction.
  • US-A-4 401 621 is concerned with a magnesium alloy containing 1.5 to 10% by weight of yttrium and 1 to 6% by weight of neodymium, with up to 40% of the yttrium due to heavy rare earth metals and up to 40% of the neodymium are replaced by lanthanum and praseodymium.
  • EP-A-0 432 810 relates to a magnesium alloy for press-cast pistons for internal combustion engines, which contains 2 to 6% by weight of neodymium and optionally 0.5 to 7.5% by weight of yttrium.
  • BE-A-837 170 describes a magnesium alloy which contains 1.25 to 3% by weight of silver, 0.5 to 2.2% by weight of rare earth metals, thereof at least 60% neodymium, and 0.2 to 1.9 % By weight contains thorium.
  • the thorium content can be replaced in whole or in part by 2.5 to 7% by weight of yttrium.
  • the disadvantage of the magnesium alloys described above is that in particular the creep and fatigue strength of components cast therefrom, exposed to high temperatures of 250 to 350 ° C., in particular those of
  • the density is ⁇ 2.0 g / cm, the good
  • Press casting can be cast and is also suitable as a matrix alloy for fiber molded articles to be cast into components.
  • the solution to this problem is that the magnesium is alloyed with 2 to 8% by mass of samarium.
  • a rare earth metal can be used in which samarium is enriched to at least 60% by mass, while the rest can consist of one or more rare earth metals.
  • the magnesium matrix may also contain 0.2 to 3.0% by mass of one or more of the elements silver, cadmium, gallium, scandium and zinc in order to increase their strength at lower temperatures.
  • An improvement in the high-temperature properties of magnesium is achieved by adding 0.2 to 3.0% by mass of one or more of the heavy rare earth metals gadolinium, therbium, dysprosium, holmium, erbium, thulium and ytterbium.
  • the magnesium can also contain 0.01 to 1.0 mass% of one or more of the elements manganese, strontium and zirconium. Manganese and especially zirconium are used for grain aggregation. Manganese is also important to compensate for iron contamination. The main effect of strontium is to control microporosity.
  • Two magnesium-rare earth alloys according to the invention with the short designation Mg-Sm7.4 and Mg-Sm5Gdl and two alloys belonging to the prior art with the short designation Al-Sil2CuMgNi and Mg-Y5Nd2Zr were melted and with a casting temperature of 770 ° C in one Cast mold heated to 400 ° C to test specimens.
  • the test specimens were homogenized at 510 ° C. for 5 hours, then quenched with water and then tempered at 250 ° C. for 5 hours.
  • the tensile strength values of the alloy according to the invention remain comparatively constant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Hard Magnetic Materials (AREA)
  • Forging (AREA)

Abstract

Afin d'améliorer la résistance au fluage, à la fatigue et à la rupture par traction d'un élement mécanique soumis à des contraintes thermiques et mécaniques élevées et coulé à partir d'un alliage de magnésium contenant 2 à 8 % en poids de métaux des terres rares, le métal des terres rares est le samarium.
PCT/EP1993/000504 1992-03-17 1993-03-05 Element mecanique WO1993019216A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924208504 DE4208504A1 (de) 1992-03-17 1992-03-17 Maschinenbauteil
DEP4208504.7 1992-03-17

Publications (1)

Publication Number Publication Date
WO1993019216A1 true WO1993019216A1 (fr) 1993-09-30

Family

ID=6454271

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/000504 WO1993019216A1 (fr) 1992-03-17 1993-03-05 Element mecanique

Country Status (3)

Country Link
DE (1) DE4208504A1 (fr)
MX (1) MX9301411A (fr)
WO (1) WO1993019216A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996024701A1 (fr) * 1995-02-06 1996-08-15 British Aluminium Holdings Limited Alliages de magnesium

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19915277A1 (de) * 1999-04-03 2000-10-05 Volkswagen Ag Magnesiumlegierungen hoher Duktilität, Verfahren zu deren Herstellung und deren Verwendung
CN1317412C (zh) * 2001-08-13 2007-05-23 本田技研工业株式会社 镁合金
DE102009038449B4 (de) 2009-08-21 2017-01-05 Techmag Ag Magnesiumlegierung
US8435444B2 (en) 2009-08-26 2013-05-07 Techmag Ag Magnesium alloy
DE102011112561A1 (de) 2011-09-08 2013-03-14 Techmag Ag Verfahren zur Herstellung einer Magnesiumlegierung und eine danach hergestellte Magnesiumlegierung
DE102013006169A1 (de) 2013-04-10 2014-10-16 Ulrich Bruhnke Aluminiumfreie Magnesiumlegierung
DE102013006170A1 (de) 2013-04-10 2014-10-16 Ulrich Bruhnke Aluminiumfreie Magnesiumlegierung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258178A1 (fr) * 1986-07-30 1988-03-02 Claude Planchamp Absorbeurs de radiations nucléaires
EP0407964A2 (fr) * 1989-07-13 1991-01-16 Ykk Corporation Alliages à base de magnésium, à haute résistance
EP0432810A1 (fr) * 1989-11-11 1991-06-19 KOLBENSCHMIDT Aktiengesellschaft Piston à métal léger, coulé sur pression, pour un moteur à combustion interne
EP0499321A1 (fr) * 1991-02-15 1992-08-19 KOLBENSCHMIDT Aktiengesellschaft Piston à métal léger pour moteurs à combustion interne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0258178A1 (fr) * 1986-07-30 1988-03-02 Claude Planchamp Absorbeurs de radiations nucléaires
EP0407964A2 (fr) * 1989-07-13 1991-01-16 Ykk Corporation Alliages à base de magnésium, à haute résistance
EP0432810A1 (fr) * 1989-11-11 1991-06-19 KOLBENSCHMIDT Aktiengesellschaft Piston à métal léger, coulé sur pression, pour un moteur à combustion interne
EP0499321A1 (fr) * 1991-02-15 1992-08-19 KOLBENSCHMIDT Aktiengesellschaft Piston à métal léger pour moteurs à combustion interne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996024701A1 (fr) * 1995-02-06 1996-08-15 British Aluminium Holdings Limited Alliages de magnesium
AU691082B2 (en) * 1995-02-06 1998-05-07 Luxfer Group Limited Magnesium alloys

Also Published As

Publication number Publication date
DE4208504A1 (de) 1993-09-23
MX9301411A (es) 1994-08-31

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