EP1910582A2 - Method for producing a copper alloy having a high damping capacity - Google Patents
Method for producing a copper alloy having a high damping capacityInfo
- Publication number
- EP1910582A2 EP1910582A2 EP06775757A EP06775757A EP1910582A2 EP 1910582 A2 EP1910582 A2 EP 1910582A2 EP 06775757 A EP06775757 A EP 06775757A EP 06775757 A EP06775757 A EP 06775757A EP 1910582 A2 EP1910582 A2 EP 1910582A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- copper alloy
- copper
- temperature
- temperatures
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/05—Alloys based on copper with manganese as the next major constituent
Definitions
- HIDAMETs High Damping METaIs
- high mechanical damping capacity is desirable for reducing vibration and noise reduction.
- Such alloys are therefore particularly suitable for the manufacture of marine propellers and pump housings, as well as for use in vibrating machines and for preventing vibration disturbances in various precision apparatuses and electronic instruments.
- the alloys are also suitable for use in various tools that are exposed to vibrations and / or shocks during operation, such as punches or dies in sheet metal forming or in lathes and milling machines.
- Ni-Ti alloy (“Nitinol”)
- Cu-Zn-Al alloys (“Proteus”)
- Mn-Cu alloys (Sonoston”
- Ni-Ti alloys must be produced consuming under vacuum and are also very expensive due to the alloying elements involved.
- nitinol Cu-Zn-Al alloys are much cheaper.
- the limited corrosion resistance and the tendency to brittle fracture behavior are significant disadvantages of these alloys.
- they are extremely severe in both the austenitic and the martensitic state to aging.
- Mn-Cu alloys have been specially developed for the manufacture of ship propellers.
- a technically interesting material alternative to the HIDAMETs described above are Cu-Al-Mn shape memory alloys. These materials also exhibit a thermoelastic martensite transformation.
- US Pat. No. 4,146,392 describes Cu-Al-Mn shape memory alloys containing, in addition to the main constituent copper, as alloy constituents 4.6 to 13% by weight of manganese and 8.6 to 12.8% by weight of aluminum, and good resistance to Have aging. These are alloys whose austenite-martensite transformation takes place at temperatures below 0 ° C. and whose shape memory effect is exploited, for example to produce pipe connection elements.
- the invention therefore an object of the invention to provide heavy-duty and corrosion-resistant HIDAMETs with a precisely adjustable even in the decisive for the intended application temperature range high damping capacity and a method for their production.
- the object of the invention is achieved by a method for producing a copper alloy with specifically improved mechanical damping, in particular for mechanically loaded components, which is characterized by the following steps: a) a composition for the alloy is selected and the
- Steps c) and d) may be repeated as many times as necessary until the desired adaptation of the transformation temperatures or intervals is achieved.
- composition for the alloy is selected from the components:
- the alloys obtained by the process according to the invention are otherwise produced by conventional melting and casting processes. Except as
- Alloy can be cold or hot form.
- the alloys described herein are particularly advantageous for all applications where a high mechanical damping capacity is required, i. especially for mechanically loaded components, devices or housings that are subject to vibrations, impacts or shocks.
- the alloys differ from Sonoston in significantly higher aluminum and significantly lower manganese contents.
- the high aluminum content improves the strength of the material according to the invention and at the same time increases its resistance to abrasion, erosion and cavitation.
- the reduced manganese concentration has a positive effect on the cast-technological properties of the alloy due to the reduction in the solidification interval.
- dense, oxide and warm crack-free casts can be produced with unit weights of several tons without quality problems.
- the proportions of the alloy components are usually varied, for. B. as described in more detail below. It has been found that the mechanical damping capacity, which frequently fluctuates greatly with variation of the composition, can be optimized and set to higher values by means of a targeted fine tuning of the contents of the individual alloy components than if only the martensitic region were preferred for better reproducible damping properties. as is usual in the prior art.
- the martensit austenitic transformation temperatures or the associated intervals Ms to MF and / or As adjusted to AF to a predetermined service or working temperature which will occur in the intended use of the alloy in a "component".
- component is intended to cover all conceivable practical applications and include both individual parts, such as more complex composite components, housings, machines and the like.
- Both the operating temperature and the working temperature can be medium temperatures, ie average values from a working or application area.
- both transition temperature intervals, the martensitic and the austenitic may be used to set to one or more different operating temperature ranges. The adjustment is made by varying the weight proportions of the above alloying ingredients during the melting of the alloy.
- nickel, iron, cobalt, zinc, silicon, vanadium, niobium, molybdenum, chromium, tungsten, beryllium, lithium, yttrium, cerium, scandium, calcium, titanium, phosphorus, zirconium, boron, nitrogen, carbon it is possible to specially adapt the properties of the alloy obtained by the process to the particular application.
- addition of nickel or silicon increases corrosion resistance and strength properties.
- Elements iron, vanadium, niobium, molybdenum, chromium, tungsten, yttrium, cerium, scandium, calcium, titanium, zirconium, boron are important for achieving grain refinement.
- Nitrogen and carbon together with transition elements improve the mechanical properties of the alloy obtained according to the invention.
- the aging resistance of the alloy in both austenitic and martensitic states is increased by the addition of cobalt.
- Beryllium and phosphorus protect the melt from oxidation.
- the alloy therefore preferably contains between 1 and 4% by weight of nickel.
- a preferred embodiment of the alloy contains between 11.6 and 12 wt .-%, preferably about 11, 8 wt .-% aluminum.
- manganese contents between 8 and 10 wt .-% are preferred in the alloy.
- the alloy may further preferably contain between 0.01 and 1% by weight of cobalt.
- the texture of the cast alloy is characterized by relatively large cast grains and is preferably grain-fined to achieve optimum mechanical properties.
- Boron additions between 0.001 and 0.05% by weight and / or chromium additions between 0.01 and 0.8% by weight and / or iron additions of 2 to 4% by weight are particularly effective for this purpose.
- the refinement can be carried out by adding rare earths up to 0.3% by weight.
- the alloy may further contain between 2 and 6% zinc.
- the alloys may preferably have Ms temperatures> 0 0 C, without the invention being limited thereto.
- the invention provides a significant improvement in the damping properties, since only by the invention, the optimal adjustment of these properties while taking into account other desired properties is possible.
- the inventive method allows the transformation temperatures in
- the invention further comprises a particularly composed copper alloy containing as alloy constituents more than 4% by weight of manganese, more than 10% by weight of aluminum, 0.01 to 0.8% by weight of chromium and singly or in total
- each element contains not more than 6% and ad 100 wt .-% copper.
- this new alloy for mechanically loaded components may have the further specifications as stated above and is also available by adjusting the martensite-austenitic transformation temperatures or the associated intervals Ms to Mp and / or As to AF to a predetermined service temperature of the component , as described above.
- the maximum values for the specific damping capacity occur in the alloy according to the invention during cooling from the austenite state in the range between Ms and MF and when heating from the martensite state between As and AF.
- the temperature in the middle of the martensitic or austenitic phase transition interval should be as close as possible to the operating temperature of components made from the alloy of the invention. It is therefore possible with the invention to produce alloys for specific predetermined service or operating temperatures or temperature ranges, which are then particularly suitable for certain applications and components.
- the exact adjustment of the transformation temperatures is made with a sample taken during the melting process which allows an express control of the transformation temperatures for the liquid alloy.
- a sample for the express control it is preferable to use a cast wire drawn from the melt by means of a quartz tube in which a negative pressure is generated.
- the determination of the transformation temperatures can be carried out on this sample, depending on the expected application either in the casting state or after the heat treatment by known experimental methods for the detection of phase transitions.
- the sample is a cast wire having a length of 10 to 150 mm (preferably 15 to 100 mm) and a cross-sectional area of 0.2 to 7 mm 2 , preferably 0.7 to 3.2 mm 2 . This is pulled out of the melt with the help of a quartz tube, in which a negative pressure is generated. This sample can be used directly and very quickly with known detection methods. In a preferred method also used here, the acoustic emission is tracked over a temperature profile.
- Fig. 1 Formation of the specific damping capacity of the alloy of the example taken for a heating and cooling cycle
- FIG. 1 shows a measurement diagram which was taken for the example described above.
- the specific damping capacity is plotted in% above the temperature in ° C.
- the temperatures were run in a heating and cooling cycle from below zero to 200 0 C and back.
- the exemplary alloy in the austenitic interval much higher attenuation can be achieved than in the martensitic, so that the frequently occurring in the art restriction to martensitic structures must lead to significant disadvantages for the alloy properties.
- the example alloy reaches its maximum damping properties at a temperature of 120 0 C and thus successfully fulfills the task.
- the achievable damping is over 70%.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005035709A DE102005035709A1 (en) | 2005-07-27 | 2005-07-27 | Copper alloy with high damping capacity and process for its preparation |
PCT/DE2006/001305 WO2007012320A2 (en) | 2005-07-27 | 2006-07-27 | Method for producing a copper alloy having a high damping capacity |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1910582A2 true EP1910582A2 (en) | 2008-04-16 |
EP1910582B1 EP1910582B1 (en) | 2012-09-05 |
Family
ID=37309676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06775757A Not-in-force EP1910582B1 (en) | 2005-07-27 | 2006-07-27 | Method for producing a copper alloy having a high damping capacity and its use |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080298999A1 (en) |
EP (1) | EP1910582B1 (en) |
JP (1) | JP2009503250A (en) |
DE (2) | DE102005035709A1 (en) |
WO (1) | WO2007012320A2 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007009996B4 (en) | 2007-03-01 | 2014-03-27 | Minebea Co., Ltd. | electric motor |
US8815027B2 (en) | 2009-10-14 | 2014-08-26 | Japan Science And Technology Agency | Fe-based shape memory alloy and its production method |
KR101231919B1 (en) | 2010-12-14 | 2013-02-08 | 한욱희 | Copper alloy composition for bending die of automobile wiper |
CN102212714B (en) * | 2011-05-11 | 2012-11-28 | 上海振嘉合金材料厂 | High-precision manganese copper resistance alloy narrow flat belt and manufacturing method thereof |
CN102296206B (en) * | 2011-09-08 | 2012-11-07 | 中南大学 | High-strength abrasion-resistant wrought aluminum bronze alloy |
CN102808105B (en) * | 2012-08-24 | 2014-11-26 | 朱育盼 | Method for preparing shape memory copper alloy |
CN103421981A (en) * | 2013-08-08 | 2013-12-04 | 常熟市东方特种金属材料厂 | High-damping shape memory alloy |
CN104250714B (en) * | 2014-08-26 | 2016-04-20 | 无棣向上机械设计服务有限公司 | A kind of low density shock resistance metallic substance and preparation method thereof |
EP3241919B1 (en) | 2016-05-04 | 2020-01-08 | Wieland-Werke AG | Copper aluminium manganese alloy and its use |
DE102017200645A1 (en) | 2017-01-17 | 2017-12-28 | Carl Zeiss Smt Gmbh | Optical arrangement, in particular lithography system |
CN108277535B (en) * | 2018-01-10 | 2019-07-23 | 厦门大学 | A kind of copper aluminium manganese base single crystal alloy |
CN109266887B (en) * | 2018-12-03 | 2019-12-10 | 河北工业大学 | Preparation method of high-damping copper-based shape memory alloy |
DE102019105453A1 (en) * | 2019-03-04 | 2020-09-10 | Kme Mansfeld Gmbh | A method for continuously manufacturing a copper alloy product |
CN111057886B (en) * | 2019-10-29 | 2021-06-22 | 宁夏中色新材料有限公司 | Preparation method of beryllium copper casting roll sleeve and beryllium copper casting roll sleeve |
CN110952045A (en) * | 2019-12-23 | 2020-04-03 | 安徽旭晶粉体新材料科技有限公司 | High-performance alloy copper powder and preparation method thereof |
DE102020002885A1 (en) | 2020-05-14 | 2021-11-18 | Wieland-Werke Aktiengesellschaft | Wrought copper-manganese-aluminum-iron alloy |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE758862A (en) * | 1969-11-12 | 1971-04-16 | Fulmer Res Inst Ltd | Improvements relating to the treatment of alloys |
US3868279A (en) * | 1971-10-08 | 1975-02-25 | Int Copper Research Ass Inc | High damping copper-manganese-aluminum alloy |
GB1593498A (en) * | 1976-03-18 | 1981-07-15 | Raychem Corp | Copper aluminium manganese alloy |
JPS61124543A (en) * | 1984-11-21 | 1986-06-12 | Sumitomo Electric Ind Ltd | Sound and vibration absorbing beta'-martensitic aluminum bronze alloy |
AU588105B2 (en) * | 1986-02-07 | 1989-09-07 | Aluminum Company Of America | System for on-line molten metal analysis |
DD301198A7 (en) * | 1990-03-19 | 1992-10-22 | Rostock Dieselmotoren | Manganese-aluminum multi-material bronze with weak magnetic structure and |
JP3300684B2 (en) * | 1999-07-08 | 2002-07-08 | 清仁 石田 | Copper-based alloy having shape memory characteristics and superelasticity, member made of the same, and method of manufacturing the same |
US6977017B2 (en) * | 2001-10-25 | 2005-12-20 | Council Of Scientific & Industrial Research | Cu-ZN-A1(6%) shape memory alloy with low martensitic temperature and a process for its manufacture |
JP2004010997A (en) * | 2002-06-10 | 2004-01-15 | Chuo Spring Co Ltd | High damping material, spring having excellent damping property and methods of producing them |
-
2005
- 2005-07-27 DE DE102005035709A patent/DE102005035709A1/en not_active Ceased
-
2006
- 2006-07-27 US US11/995,842 patent/US20080298999A1/en not_active Abandoned
- 2006-07-27 WO PCT/DE2006/001305 patent/WO2007012320A2/en active Application Filing
- 2006-07-27 JP JP2008523117A patent/JP2009503250A/en not_active Withdrawn
- 2006-07-27 DE DE112006002577T patent/DE112006002577A5/en not_active Withdrawn
- 2006-07-27 EP EP06775757A patent/EP1910582B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2007012320A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005035709A1 (en) | 2007-02-15 |
US20080298999A1 (en) | 2008-12-04 |
EP1910582B1 (en) | 2012-09-05 |
WO2007012320A2 (en) | 2007-02-01 |
WO2007012320A3 (en) | 2007-05-31 |
DE112006002577A5 (en) | 2008-06-26 |
JP2009503250A (en) | 2009-01-29 |
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Inventor name: RIEHEMANN, WERNER Inventor name: TONN, BABETTE Inventor name: ZAK, HENNADIY Inventor name: MIELCZAREK, AGNIESZKA Inventor name: VOGELGESANG, SOENKE |
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