EP0119180B1 - Zinc base alloy with ductility properties - Google Patents
Zinc base alloy with ductility properties Download PDFInfo
- Publication number
- EP0119180B1 EP0119180B1 EP84870009A EP84870009A EP0119180B1 EP 0119180 B1 EP0119180 B1 EP 0119180B1 EP 84870009 A EP84870009 A EP 84870009A EP 84870009 A EP84870009 A EP 84870009A EP 0119180 B1 EP0119180 B1 EP 0119180B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- content
- alloy
- boron
- titanium
- zinc
- 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
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 6
- 239000011701 zinc Substances 0.000 title claims description 6
- 229910052725 zinc Inorganic materials 0.000 title claims description 6
- 229910045601 alloy Inorganic materials 0.000 title description 26
- 239000000956 alloy Substances 0.000 title description 26
- 229910052796 boron Inorganic materials 0.000 claims description 21
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 17
- 239000010936 titanium Substances 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 16
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 14
- 229910052712 strontium Inorganic materials 0.000 claims description 13
- 229910052726 zirconium Inorganic materials 0.000 claims description 13
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 12
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 239000011777 magnesium Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 claims 1
- 238000007792 addition Methods 0.000 description 17
- 238000005266 casting Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000521 B alloy Inorganic materials 0.000 description 1
- 229910001278 Sr alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
Definitions
- the present invention relates to zinc-based alloys with improved ductility.
- a zinc alloy intended for gravity casting is known in particular having a breaking load of the order of 400 MPa. This value was reached by assuring the alloy an aluminum content of about 27%, with additions of copper and magnesium. The ductility of this alloy is however poor, because its elongation is, under the best casting conditions, between 4 and 8%. It is the same for other known alloys, containing about 35% of aluminum and additions in particular of copper, which are revealed in particular by the patents FR-A-1 140 750 and CH-A-328 148 and which also contain a boron content.
- the present invention relates to a zinc-based alloy, intended for gravity casting and having improved ductility properties.
- the elongation is clearly improved, while the breaking load remains at least equal to that of the alloys containing 27% or 35% of aluminum.
- a zinc alloy, object of the present invention containing 25% to 40% of aluminum, 0.5% to 5% of copper and up to 0.1% of magnesium, has a content of boron between 0.000 5% (5 ppm) and 0.1%, and preferably between 0.005% and 0.050%, and a titanium content between 0.002 5% (25 ppm) and 0.5%.
- the Zn-AI-B-Ti alloy preferably contains a titanium content of between 0.005% and 0.050%.
- titanium must amount to at least 25 ppm (0.0025%) to exert a perceptible influence on the breaking load, and preferably at least 0.005%.
- a Zn-AI-B alloy of the aforementioned type also contains zirconium and / or strontium in a content of less than 0.1%.
- the table below illustrates the effect of the additions, in accordance with the invention, which have just been described, on the breaking load and on the elongation of a zinc-based alloy containing 27% aluminum, 1% copper and 0.02% magnesium.
- Alloy A is the previously known alloy; it has a low ductility, expressed by an elongation of between 4% and 8%.
- Alloys B and B 2 show that an addition of boron within the limits indicated makes it possible to very significantly raise the value of the elongation, and consequently to improve the ductility without altering the breaking load of the alloy.
- the alloys C 1 and C 2 corresponding to the first particular form of the invention also exhibit increased elongation; in addition, the breaking load is slightly increased in the case of the alloy C 1, whose boron and titanium contents respect the preferential ratio of 1: 5.
- the alloy C 3 has a breaking load significantly improved, but the elongation remained at that of the reference alloy, despite the presence of boron. This behavior seems to be explained by the formation of intermetallic compounds of boron and titanium, which counteract the beneficial effect of boron on elongation, when the titanium contents are high.
- Alloy D 1 which corresponds to the second particular form of the invention, has a significantly higher breaking load than the basic alloy, associated with elongations which are also improved.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Conductive Materials (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Description
La présente invention concerne des alliages à base de zinc présentant une ductilité améliorée.The present invention relates to zinc-based alloys with improved ductility.
Le domaine d'utilisation des alliages à base de zinc est actuellement etendu à de nombreuses applications intéressant de multiples aspects de l'industrie. C'est le cas, en particulier, des alliages de zinc destinés à la coulée par gravité.The field of use of zinc-based alloys is currently extended to numerous applications of interest to multiple aspects of the industry. This is the case, in particular, for zinc alloys intended for gravity casting.
On a déjà cherché à améliorer le propriétés de tels alliages de zinc, en leur incorporant un ou plusieurs éléments, en quantités variables parfois même en très faible quantité, afin d'obtenir des alliages aptes à un éventail d'applications aussi large que possible.Attempts have already been made to improve the properties of such zinc alloys, by incorporating one or more elements into them, in varying quantities, sometimes even in very small quantities, in order to obtain alloys suitable for a wide range of applications.
On connaît notamment un alliage de zinc destiné à la coulée par gravité présentant une charge de rupture de l'ordre de 400 MPa. Cette valeur a été atteinte en assurant à l'alliage une teneur en aluminium d'environ 27 %, avec des additions de cuivre et de magnésium. La ductilité de cet alliage est cependant médiocre, car son allongement est, dans les meilleures conditions de coulée, compris entre 4 et 8 %. Il en est de même d'autres alliages connus, contenant environ 35 % d'aluminium et des additions notamment de cuivre, qui sont révélés notamment par les brevets FR-A-1 140 750 et CH-A-328 148 et qui contiennent aussi une teneur en bore.A zinc alloy intended for gravity casting is known in particular having a breaking load of the order of 400 MPa. This value was reached by assuring the alloy an aluminum content of about 27%, with additions of copper and magnesium. The ductility of this alloy is however poor, because its elongation is, under the best casting conditions, between 4 and 8%. It is the same for other known alloys, containing about 35% of aluminum and additions in particular of copper, which are revealed in particular by the patents FR-A-1 140 750 and CH-A-328 148 and which also contain a boron content.
La présente invention a pour objet un alliage à base de zinc, destiné à la coulée par gravité et présentant des propriétés de ductilité améliorée. En particulier, l'allongement est nettement amélioré, tandis que la charge de rupture reste au moins égale à celle des alliages contenant 27 % ou 35 % d'aluminium.The present invention relates to a zinc-based alloy, intended for gravity casting and having improved ductility properties. In particular, the elongation is clearly improved, while the breaking load remains at least equal to that of the alloys containing 27% or 35% of aluminum.
La composition de l'alliage conforme à l'invention résulte de la constatation inattendue faite par le demandeur, selon laquelle il est possible d'améliorer :
- - la ductilité de l'alliage, au moyen de faibles additions de bore ;
- - la charge de rupture de l'alliage, au moyen de faibles additions de titane, de zirconium et/ou de strontium ;
- - en particulier, ces deux propriétés simultanément en combinant judicieusement les additions précitées.
- - the ductility of the alloy, by means of small additions of boron;
- - the breaking load of the alloy, by means of small additions of titanium, zirconium and / or strontium;
- - In particular, these two properties simultaneously by judiciously combining the above additions.
Selon une première modalité, un alliage de zinc, objet de la présente invention, contenant 25 % à 40 % d'aluminium, 0,5 % à 5 % de cuivre et jusqu'à 0,1 % de magnésium, présente une teneur en bore comprise entre 0,000 5 % (5 ppm) et 0,1 %, et de préférence entre 0,005 % et 0,050 %, et une teneur en titane entre 0,002 5 % (25 ppm) et 0,5 %.According to a first method, a zinc alloy, object of the present invention, containing 25% to 40% of aluminum, 0.5% to 5% of copper and up to 0.1% of magnesium, has a content of boron between 0.000 5% (5 ppm) and 0.1%, and preferably between 0.005% and 0.050%, and a titanium content between 0.002 5% (25 ppm) and 0.5%.
L'influence du bore sur l'allongement d'un alliage conforme à cette première variante ne devient perceptible qu'à partir d'une teneur d'environ 5 ppm, tandis que le bénéfice de cet élément cesse d'augmenter lorsque la teneur en bore dépasse environ 0,1 %.The influence of boron on the elongation of an alloy conforming to this first variant only becomes perceptible from a content of approximately 5 ppm, while the benefit of this element ceases to increase when the content of boron exceeds about 0.1%.
Dans le cadre de cette première modalité, l'alliage Zn-AI-B-Ti contient de préférence une teneur en titane comprise entre 0,005 % et 0,050 %.Within the framework of this first method, the Zn-AI-B-Ti alloy preferably contains a titanium content of between 0.005% and 0.050%.
Il a en effet été constaté que l'addition de titane devait s'élever à au moins 25 ppm (0,0025 %) pour exercer une influence perceptible sur la charge de rupture, et de préférence d'au moins 0,005 %.It has in fact been found that the addition of titanium must amount to at least 25 ppm (0.0025%) to exert a perceptible influence on the breaking load, and preferably at least 0.005%.
Par ailleurs, une teneur en titane supérieure à 0,05 % et au maximum 0,5 % n'apporte pratiquement aucun accroissement supplémentaire de la charge de rupture.Furthermore, a titanium content greater than 0.05% and at most 0.5% brings practically no additional increase in the breaking load.
Toujours selon cette première modalité, il est également intéressant de combiner judicieusement les additions de bore et de titane, de façcon à améliorer simultanément l'allongement et la charge de rupture de cet alliage de zinc.Still according to this first modality, it is also advantageous to judiciously combine the additions of boron and titanium, so as to simultaneously improve the elongation and the breaking load of this zinc alloy.
A cet égard, il s'est avéré avantageux de proportionner les additions de bore et de titane, de telle façon que le rapport des teneurs en bore et en titane soit sensiblement égal à 1 : 5.In this respect, it has been found advantageous to proportion the additions of boron and titanium, so that the ratio of the contents of boron and titanium is substantially equal to 1: 5.
Selon une seconde modalité particulière de l'invention, un alliage Zn-AI-B du type précité contient en outre du zirconium et/ou du strontium en une teneur inférieure à 0,1 %.According to a second particular form of the invention, a Zn-AI-B alloy of the aforementioned type also contains zirconium and / or strontium in a content of less than 0.1%.
Le demandeur a constaté qu'un alliage Zn-AI-B-Zr, Zn-AI-B-Sr ou Zn-AI-B-Zr-Sr comportant des additions précitées de cuivre et de magnésium et répondant aux conditions ci-dessus présentait à la fois une charge de rupture nettement accrue et des allongements plus élevés par rapport à un alliage ne contenant pas de zirconium ou de strontium.The applicant has found that a Zn-AI-B-Zr, Zn-AI-B-Sr or Zn-AI-B-Zr-Sr alloy comprising the above-mentioned additions of copper and magnesium and meeting the above conditions had both a significantly increased breaking load and higher elongations compared to an alloy containing no zirconium or strontium.
Un alliage de zinc conforme à cette seconde modalité contenant 25 % à 40 % d'aluminium, 0,5 % à 5 % de cuivre et jusqu'à 1 % de magnésium, présente une teneur en bore comprise entre 5 ppm et 0,1 % et une teneur en zirconium et/ou en strontium comprise de préférence entre 0,005 % et 0,050 %.A zinc alloy conforming to this second modality containing 25% to 40% aluminum, 0.5% to 5% copper and up to 1% magnesium, has a boron content of between 5 ppm and 0.1 % and a zirconium and / or strontium content preferably between 0.005% and 0.050%.
De façon inattendue, l'influence du zirconium et/ou du strontium sur la charge de rupture des alliages ne devient vraiment perceptible qu'à partir d'une teneur d'environ 5 ppm, tandis que le bénéfice de ces éléments n'apparaît plus guère lorsque leur teneur dépasse environ 0,1 %.Unexpectedly, the influence of zirconium and / or strontium on the tensile strength of alloys only really becomes perceptible from a content of around 5 ppm, while the benefit of these elements no longer appears hardly when their content exceeds about 0.1%.
A cet égard, il s'est avéré particulièrement avantageux de proportionner les additions de bore et de zirconium et/ou strontium de telle façon que le rapport de la teneur en bore à la teneur en zirconium et/ou strontium soit sensiblement égal à 1 : 5.In this regard, it has proven particularly advantageous to proportion the additions of boron and zirconium and / or strontium in such a way that the ratio of the boron content to the zirconium and / or strontium content is substantially equal to 1: 5.
Toujours selon cette seconde modalité, il s'est également avéré intéressant de combiner les additions de zirconium et/ou strontium avec une addition de titane ne dépassant pas 0,1 %, de façon à bénéficier également de l'amélioration de la charge de rupture d'un alliage de zinc conforme à l'invention que permettent ces divers éléments.Still according to this second method, it has also proved to be advantageous to combine the additions of zirconium and / or strontium with an addition of titanium not exceeding 0.1%, so as to also benefit from the improvement in the breaking load. of a zinc alloy according to the invention which these various elements allow.
A titre d'exemple, le tableau ci-dessous illustre l'effet des additions, conformes à l'invention, qui viennent d'être décrites, sur la charge de rupture et sur l'allongement d'un alliage à base de zinc contenant 27% d'aluminium, 1 % de cuivre et 0.02 % de magnésium.
L'alliage A est l'alliage connu antérieurement ; il présente une ductilité peu élevée, exprimée par un allongement compris entre 4 % et 8 %.Alloy A is the previously known alloy; it has a low ductility, expressed by an elongation of between 4% and 8%.
Les alliages B, et B2, montrent qu'une addition de bore dans les limites indiquées permet de relever très sensiblement la valeur de l'allongement, et par conséquent d'améliorer la ductilité sans altérer la charge de rupture de l'alliage.Alloys B and B 2 show that an addition of boron within the limits indicated makes it possible to very significantly raise the value of the elongation, and consequently to improve the ductility without altering the breaking load of the alloy.
Les alliages C1 et C2 répondant à la première modalité particulière de l'invention, présentent également un allongement accru ; en outre, la charge de rupture est légèrement augmentée dans le cas de l'alliage C1, dont les teneurs en bore et en titane respectent le rapport préférentiel de 1 : 5. En revanche, l'alliage C3 présente une charge de rupture nettement améliorée, mais l'allongement est resté au niveau de celui de l'alliage de référence, malgré la présence de bore. Ce comportement semble pouvoir être expliqué par la formation de composés intermétalliques de bore et de titane, qui contrarient l'effet bénéfique du bore sur l'allongement, lorsque les teneurs en titane sont élevées.The alloys C 1 and C 2 corresponding to the first particular form of the invention also exhibit increased elongation; in addition, the breaking load is slightly increased in the case of the alloy C 1, whose boron and titanium contents respect the preferential ratio of 1: 5. On the other hand, the alloy C 3 has a breaking load significantly improved, but the elongation remained at that of the reference alloy, despite the presence of boron. This behavior seems to be explained by the formation of intermetallic compounds of boron and titanium, which counteract the beneficial effect of boron on elongation, when the titanium contents are high.
L'alliage D1, qui correspond à la seconde modalité particulière de l'invention, présente une charge de rupture nettement plus élevée que l'alliage de base, associée à des allongements qui sont également améliorés.Alloy D 1, which corresponds to the second particular form of the invention, has a significantly higher breaking load than the basic alloy, associated with elongations which are also improved.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT84870009T ATE41447T1 (en) | 1983-02-11 | 1984-01-20 | ZINC-BASED ALLOY WITH DUCTILITY. |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE6047778 | 1983-02-11 | ||
| BE6/47778A BE895892A (en) | 1983-02-11 | 1983-02-11 | Zinc-aluminium alloy contg. boron and/or titanium - for improved ductility and/or rupture strength |
| BE6047844 | 1983-07-05 | ||
| BE6047844 | 1983-07-05 | ||
| BE6047872 | 1983-09-20 | ||
| BE6/47872A BE897789A (en) | 1983-09-20 | 1983-09-20 | Zinc based alloy contg boron - with added zirconium and or strontium to improve rupture strength |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0119180A2 EP0119180A2 (en) | 1984-09-19 |
| EP0119180A3 EP0119180A3 (en) | 1986-04-30 |
| EP0119180B1 true EP0119180B1 (en) | 1989-03-15 |
Family
ID=27159694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84870009A Expired EP0119180B1 (en) | 1983-02-11 | 1984-01-20 | Zinc base alloy with ductility properties |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0119180B1 (en) |
| DE (1) | DE3477206D1 (en) |
| WO (1) | WO1993013230A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004050942A1 (en) * | 2002-12-03 | 2004-06-17 | Summet Hi-Tech Coatings Ltd. | Corrosion resistant poly-metal diffusion coatings and a method of applying same |
| CN104651686A (en) * | 2015-03-16 | 2015-05-27 | 靖江新舟合金材料有限公司 | Alloy ingot and preparation method |
| CN104651687A (en) * | 2015-03-16 | 2015-05-27 | 靖江新舟合金材料有限公司 | Alloy zinc ingot and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10131344C1 (en) * | 2001-06-28 | 2002-11-21 | Grillo Werke Ag | Zinc alloy used for casting and die casting contains alloying additions of aluminum, copper, magnesium, silicon, titanium, and boron |
| CN101698912B (en) * | 2009-11-06 | 2011-08-17 | 湖南华康新材料有限公司 | Copper alloy substitute material high-performance deformation zinc base alloy suitable for continuous extrusion |
| CN106399755B (en) * | 2016-12-12 | 2018-05-04 | 福州大学 | A kind of environment-friendly type zinc-aluminium damping alloy and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB790309A (en) * | 1954-11-18 | 1958-02-05 | Wilhelm Neu | Zinc-aluminium alloys and the production thereof |
| FR2145241A5 (en) * | 1971-07-02 | 1973-02-16 | Centre Nat Rech Metall |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1490696A (en) * | 1923-04-26 | 1924-04-15 | Golyer Anthony G De | Zinc alloy |
| CH328148A (en) * | 1952-06-30 | 1958-02-28 | Wilhelm Dr Neu | Zinc-aluminum alloy, method of making and using such an alloy |
| FR1140750A (en) * | 1956-02-03 | 1957-08-12 | A process for making zinc-aluminum-copper alloy with additions such as silicon, boron, carbon, nickel and other metals | |
| DE2142685A1 (en) * | 1971-08-26 | 1973-03-01 | Metallgesellschaft Ag | Superplastic zinc alloys - improved creep resistance |
-
1984
- 1984-01-20 DE DE8484870009T patent/DE3477206D1/en not_active Expired
- 1984-01-20 EP EP84870009A patent/EP0119180B1/en not_active Expired
- 1984-02-08 WO PCT/BE1984/000003 patent/WO1993013230A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB790309A (en) * | 1954-11-18 | 1958-02-05 | Wilhelm Neu | Zinc-aluminium alloys and the production thereof |
| FR2145241A5 (en) * | 1971-07-02 | 1973-02-16 | Centre Nat Rech Metall |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004050942A1 (en) * | 2002-12-03 | 2004-06-17 | Summet Hi-Tech Coatings Ltd. | Corrosion resistant poly-metal diffusion coatings and a method of applying same |
| US7241350B2 (en) * | 2002-12-03 | 2007-07-10 | Greenkote (Israel) Ltd. | Corrosion resistant poly-metal diffusion coatings and a method of applying same |
| CN104651686A (en) * | 2015-03-16 | 2015-05-27 | 靖江新舟合金材料有限公司 | Alloy ingot and preparation method |
| CN104651687A (en) * | 2015-03-16 | 2015-05-27 | 靖江新舟合金材料有限公司 | Alloy zinc ingot and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0119180A3 (en) | 1986-04-30 |
| EP0119180A2 (en) | 1984-09-19 |
| WO1993013230A1 (en) | 1993-07-08 |
| DE3477206D1 (en) | 1989-04-20 |
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