EP0478479B1 - Procédé permettant d'améliorer le comportement à la microrétassure des alliages de magnésium - Google Patents
Procédé permettant d'améliorer le comportement à la microrétassure des alliages de magnésium Download PDFInfo
- Publication number
- EP0478479B1 EP0478479B1 EP91420340A EP91420340A EP0478479B1 EP 0478479 B1 EP0478479 B1 EP 0478479B1 EP 91420340 A EP91420340 A EP 91420340A EP 91420340 A EP91420340 A EP 91420340A EP 0478479 B1 EP0478479 B1 EP 0478479B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strontium
- magnesium alloys
- manganese
- zinc
- weight
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
Definitions
- the present invention relates to a method making it possible to improve the microbreakage behavior of magnesium alloys.
- microbreaks tend to degrade the mechanical characteristics of the parts which contain them.
- they form open porosities which make them unusable in applications where they are subjected to pressure.
- the invention consists in adding to the magnesium alloy an element from the family of alkaline earths: strontium.
- the amount of strontium added is between 0.01 and 2% by weight of the alloy because below 0.01%, the effect is negligible and above 2%, the addition turns out to be harmful because it there is a large amount of intermetallic compounds which weaken the metal.
- the purpose of this example is to show the influence of strontium on the mechanical characteristics of the AZ91 alloy. Test pieces without micro-backwashes, in the T4 and T6 state and containing 0 and 0.3% of strontium were subjected to tensile tests at room temperature and the values of the elastic limit R0.2, of the resistance were measured. at rupture Rm and elongation A. The results are shown in the following table.
- T4 and T6 correspond to heat treatments for dissolving followed in the first case of a natural aging treatment and in the second of an artificial aging treatment.
- strontium does not alter the mechanical tensile properties and even improves the elastic limit of the alloy in the T4 state.
- the presence of strontium guaranteeing the absence of microretassures it is certain that the values obtained are representative of the properties of the whole part, which is more difficult to obtain in the absence of strontium.
- the purpose of this example is to show the influence of strontium on corrosion resistance.
- This invention finds its application, in particular in the manufacture of gearbox casings and structural elements of portable computers.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
- Forging (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Domestic Plumbing Installations (AREA)
- Mechanical Operated Clutches (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9012455 | 1990-09-28 | ||
FR9012455A FR2667328B1 (fr) | 1990-09-28 | 1990-09-28 | Procede permettant d'ameliorer le comportement a la microretassure des alliages de magnesium. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0478479A1 EP0478479A1 (fr) | 1992-04-01 |
EP0478479B1 true EP0478479B1 (fr) | 1995-05-17 |
Family
ID=9401070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91420340A Expired - Lifetime EP0478479B1 (fr) | 1990-09-28 | 1991-09-26 | Procédé permettant d'améliorer le comportement à la microrétassure des alliages de magnésium |
Country Status (9)
Country | Link |
---|---|
US (1) | US5223215A (no) |
EP (1) | EP0478479B1 (no) |
JP (1) | JP2559306B2 (no) |
KR (1) | KR100225180B1 (no) |
CA (1) | CA2052372C (no) |
DE (1) | DE69109788T2 (no) |
ES (1) | ES2071961T3 (no) |
FR (1) | FR2667328B1 (no) |
NO (1) | NO179290C (no) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6846451B2 (en) | 2001-08-23 | 2005-01-25 | The Japan Steel Works, Ltd. | Magnesium alloy and magnesium alloy member superior in corrosion resistance |
DE102007061561A1 (de) * | 2007-12-18 | 2009-06-25 | Magontec Gmbh | Legierung umfassend Mg und Sr und hieraus gefertigte galvanische Opferanode |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2144421A1 (en) * | 1992-09-11 | 1994-03-31 | Tadayoshi Nakamura | Refined magnesium material and method for producing the same |
US5693158A (en) * | 1993-02-12 | 1997-12-02 | Mazda Motor Corporation | Magnesium light alloy product and method of producing the same |
EP0665299B1 (en) * | 1993-12-17 | 2000-03-08 | Mazda Motor Corporation | Magnesium alloy cast material for plastic processing, magnesium alloy member using the same, and manufacturing method thereof |
IL125681A (en) * | 1998-08-06 | 2001-06-14 | Dead Sea Magnesium Ltd | Magnesium alloy for high temperature applications |
US6322644B1 (en) * | 1999-12-15 | 2001-11-27 | Norands, Inc. | Magnesium-based casting alloys having improved elevated temperature performance |
US6808679B2 (en) * | 1999-12-15 | 2004-10-26 | Noranda, Inc. | Magnesium-based casting alloys having improved elevated temperature performance, oxidation-resistant magnesium alloy melts, magnesium-based alloy castings prepared therefrom and methods for preparing same |
CA2337630C (en) | 2000-02-24 | 2005-02-01 | Mitsubishi Aluminum Co., Ltd. | Die casting magnesium alloy |
US6342180B1 (en) | 2000-06-05 | 2002-01-29 | Noranda, Inc. | Magnesium-based casting alloys having improved elevated temperature properties |
DE10251663A1 (de) * | 2002-11-06 | 2004-05-19 | Bayerische Motoren Werke Ag | Magnesiumlegierung |
CA2419010A1 (en) * | 2003-02-17 | 2004-08-17 | Noranda Inc. | Strontium for melt oxidation reduction of magnesium and a method for adding strontium to magnesium |
JP5249367B2 (ja) * | 2003-06-19 | 2013-07-31 | 住友電気工業株式会社 | マグネシウム基合金ねじ |
CN1306052C (zh) * | 2004-09-17 | 2007-03-21 | 中国科学院上海微系统与信息技术研究所 | 高耐蚀铸造镁铝合金及制备方法 |
CN104745905A (zh) * | 2013-12-30 | 2015-07-01 | 苏州昊卓新材料有限公司 | 一种高强度、高韧性压铸镁合金及其制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0456376A1 (en) * | 1990-04-24 | 1991-11-13 | Wm. Wrigley Jr. Company | Sorbitol-modified flavor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1979452A (en) * | 1933-03-25 | 1934-11-06 | Kemet Lab Co Inc | Magnesium alloy |
US2221254A (en) * | 1939-11-13 | 1940-11-12 | Dow Chemical Co | Magnesium base alloy |
US2464918A (en) * | 1945-03-22 | 1949-03-22 | Magnesium Elektron Ltd | Magnesium base alloys |
FR1214787A (fr) * | 1958-02-11 | 1960-04-12 | Fuchs Otto | Alliages de magnésium à résistance de fluage élevée contre une déformation permanente aux températures élevées |
US3119684A (en) * | 1961-11-27 | 1964-01-28 | Dow Chemical Co | Article of magnesium-base alloy and method of making |
US5143564A (en) * | 1991-03-28 | 1992-09-01 | Mcgill University | Low porosity, fine grain sized strontium-treated magnesium alloy castings |
-
1990
- 1990-09-28 FR FR9012455A patent/FR2667328B1/fr not_active Expired - Fee Related
-
1991
- 1991-09-16 US US07/760,474 patent/US5223215A/en not_active Expired - Lifetime
- 1991-09-19 NO NO913693A patent/NO179290C/no unknown
- 1991-09-26 EP EP91420340A patent/EP0478479B1/fr not_active Expired - Lifetime
- 1991-09-26 DE DE69109788T patent/DE69109788T2/de not_active Expired - Fee Related
- 1991-09-26 ES ES91420340T patent/ES2071961T3/es not_active Expired - Lifetime
- 1991-09-27 CA CA002052372A patent/CA2052372C/fr not_active Expired - Fee Related
- 1991-09-27 KR KR1019910017162A patent/KR100225180B1/ko not_active IP Right Cessation
- 1991-09-27 JP JP3249627A patent/JP2559306B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0456376A1 (en) * | 1990-04-24 | 1991-11-13 | Wm. Wrigley Jr. Company | Sorbitol-modified flavor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6846451B2 (en) | 2001-08-23 | 2005-01-25 | The Japan Steel Works, Ltd. | Magnesium alloy and magnesium alloy member superior in corrosion resistance |
DE10236440B4 (de) * | 2001-08-23 | 2005-01-27 | The Japan Steel Works, Ltd. | Magnesiumlegierung und Magnesiumlegierungs-Formkörper mit verbesserter Korrosionsbeständigkeit |
DE102007061561A1 (de) * | 2007-12-18 | 2009-06-25 | Magontec Gmbh | Legierung umfassend Mg und Sr und hieraus gefertigte galvanische Opferanode |
Also Published As
Publication number | Publication date |
---|---|
KR100225180B1 (ko) | 1999-10-15 |
ES2071961T3 (es) | 1995-07-01 |
EP0478479A1 (fr) | 1992-04-01 |
CA2052372C (fr) | 1997-03-18 |
FR2667328A1 (fr) | 1992-04-03 |
CA2052372A1 (fr) | 1992-03-29 |
DE69109788T2 (de) | 1995-09-21 |
DE69109788D1 (de) | 1995-06-22 |
NO913693L (no) | 1992-03-30 |
NO179290B (no) | 1996-06-03 |
FR2667328B1 (fr) | 1992-11-06 |
NO179290C (no) | 1996-09-11 |
US5223215A (en) | 1993-06-29 |
JP2559306B2 (ja) | 1996-12-04 |
NO913693D0 (no) | 1991-09-19 |
KR920006526A (ko) | 1992-04-27 |
JPH0867928A (ja) | 1996-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0478479B1 (fr) | Procédé permettant d'améliorer le comportement à la microrétassure des alliages de magnésium | |
EP1766102B1 (fr) | Procede de fabrication de produits en alliage d'aluminium a haute tenacite et haute resistance a la fatigue | |
EP1966402B1 (fr) | Tole en aluminium-cuivre-lithium a haute tenacite pour fuselage d'avion | |
FR2826979A1 (fr) | Produits lamines soudables en alliage d'aluminium a haute resistance et leur procede de fabrication | |
WO2002048414A1 (fr) | Piece de securite moulee en alliage al-si | |
EP0158571B1 (fr) | Alliages al-cu-li-mg à très haute résistance mécanique spécifique | |
EP2516687B1 (fr) | Pièce moulée en alliage d'aluminium au cuivre à haute résistance mécanique et au fluage à chaud | |
CA2851592A1 (fr) | Procede de transformation ameliore de toles en alliage al-cu-li | |
FR3026747A1 (fr) | Toles isotropes en alliage d'aluminium-cuivre-lithium pour la fabrication de fuselages d'avion | |
EP3122913A1 (fr) | Procédé de fabrication d'une pièce mécanique décolletée et anodisée en alliage 6xxx présentant une faible rugosité après anodisation | |
WO2006056686A2 (fr) | Alliage d’aluminium pour piece a haute resistance mecanique a chaud | |
FR3018823A1 (fr) | Produit file en alliage 6xxx apte au decolletage et presentant une faible rugosite apres anodisation | |
JP4511156B2 (ja) | アルミニウム合金の製造方法と、これにより製造されるアルミニウム合金、棒状材、摺動部品、鍛造成形品および機械加工成形品 | |
JPH07145440A (ja) | アルミニウム合金鍛造素材 | |
JP2000355722A (ja) | 気密性及び耐摩耗性に優れたAl−Si系ダイカスト製品及びその製造方法 | |
JPH0941064A (ja) | 鋳造用アルミニウム合金およびアルミニウム合金鋳造材の製造方法 | |
JP3195392B2 (ja) | 高強度高靱性アルミニウム合金鋳物の製造方法 | |
KR100828861B1 (ko) | 알루미늄합금 압출 소재 | |
JP2002129271A (ja) | アルミニウム合金およびアルミニウム合金製鋳物の製造方法 | |
CN112930410A (zh) | 压铸用铝合金及铝合金压铸材料 | |
FR2841567A1 (fr) | PRODUIT EN ALLIAGE AlMgSi LAMINE POUVANT ETRE TRAITE THERMIQUEMENT | |
FR2700343A1 (fr) | Procédé de fabrication d'articles en alliage Zn-Al-Cu par coulée centrifuge ou coulée sous pression. | |
EP0064468B1 (fr) | Procédé de fabrication de feuilles en alliages d'aluminium-fer hypoeutectiques | |
CH627788A5 (en) | Nickel alloy with a high boron content | |
JP3073883B2 (ja) | ダイカスト鋳造用アルミニウム合金及びディファレンシアル用部材 |
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): DE ES FR GB IT SE |
|
17P | Request for examination filed |
Effective date: 19920413 |
|
17Q | First examination report despatched |
Effective date: 19940503 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT SE |
|
ITF | It: translation for a ep patent filed |
Owner name: ING. A. GIAMBROCONO & C. S.R.L. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950519 |
|
REF | Corresponds to: |
Ref document number: 69109788 Country of ref document: DE Date of ref document: 19950622 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2071961 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050926 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20070910 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20070920 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20070914 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20070820 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20070725 Year of fee payment: 17 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20080926 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20090529 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090401 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080930 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20080927 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080926 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080927 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20070915 Year of fee payment: 17 |
|
PGRI | Patent reinstated in contracting state [announced from national office to epo] |
Ref country code: IT Effective date: 20091201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080927 |
|
PGRI | Patent reinstated in contracting state [announced from national office to epo] |
Ref country code: IT Effective date: 20091201 |