WO2008056785A1 - Allliage de manganèse-base et procédé de production de ce dernier - Google Patents

Allliage de manganèse-base et procédé de production de ce dernier Download PDF

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Publication number
WO2008056785A1
WO2008056785A1 PCT/JP2007/071828 JP2007071828W WO2008056785A1 WO 2008056785 A1 WO2008056785 A1 WO 2008056785A1 JP 2007071828 W JP2007071828 W JP 2007071828W WO 2008056785 A1 WO2008056785 A1 WO 2008056785A1
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Prior art keywords
manganese
mass
based alloy
temperature
range
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PCT/JP2007/071828
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English (en)
Japanese (ja)
Inventor
Fukusei In
Satoshi Iwasaki
Nobuo Sakuma
Takaaki Hibaru
Takuya Sakaguchi
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Toyota Jidosha Kabushiki Kaisha
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Publication of WO2008056785A1 publication Critical patent/WO2008056785A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C22/00—Alloys based on manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon

Definitions

  • the present invention relates to a manganese-based alloy as a vibration-damping alloy whose upper limit of the operating temperature range of the vibration-damping function is a high temperature of 100 ° C or higher, and a method for producing the same.
  • Manganese-based alloys have a stable damping function and excellent mechanical properties, so they are attracting attention as vibration damping alloys that are the closest to practical use, and research and development have been actively promoted toward practical use. Yes. For example, optimizing the composition of metal elements added to manganese-based alloys to improve workability (Patent Document 1), and adding hard second-phase particles to improve alloy strength (Patent Document 2) , Heat treatment to improve moldability and dimensional accuracy before and after heat treatment (Patent Document 3), heat treatment method that heats twin-type vibration-damping manganese-based alloy at high temperature and then cools it at a constant rate (Patent Document 3) 4) etc. are proposed!
  • the damping function of the manganese-based alloy is considered to be derived from the twin structure of the alloy. From this, it is considered that the operating temperature range of the damping function of the manganese-based alloy coincides with the temperature range in which the twin structure forms, and the upper limit temperature is a low temperature that exhibits twinning from the high-temperature ⁇ phase of the manganese-based alloy. Since this is the critical temperature (phase transformation temperature) at which phase transformation occurs in the vapor phase, the upper limit of the operating temperature range of the damping function of the Mangan-based alloy is considered to coincide with the phase transformation temperature of the manganese-based alloy.
  • the damping function hardly operates at temperatures exceeding the phase transformation temperature, and the damping function operates stably at a temperature range lower than the phase transformation temperature. Therefore, the upper limit of the operating temperature range of the damping function can be controlled by adjusting the phase transformation temperature of the manganese-based alloy.
  • the phase transformation temperature of a manganese-based alloy can be adjusted according to the alloy composition (increased manganese content, etc.) and the conditions in the heat treatment process during production. Increasing the manganese content is not practical because the forgeability and workability of the alloy deteriorate. Therefore, in general, the phase transformation temperature is adjusted according to the conditions in the heat treatment process during production. From this, depending on the conditions in the heat treatment process during production, It is considered that the upper limit of the operating temperature range of the gold damping function can be controlled.
  • Damping alloys are said to have a great need in the fields of engines and power plants for automobiles, aircraft, etc., but in order to be used in these fields, the temperature of 100 ° C or higher is required.
  • the vibration control function must be activated in a high temperature environment.
  • the sonostone alloys Mn-37Cu-4Al-3Fe-2Ni (mass ratio)
  • inlamute alloys Cu-25Mn-2A1 (mass ratio)
  • the manganese-based alloy has a phase transformation temperature lower than 100 ° C, so the damping function does not work in such a high temperature environment.
  • an aging treatment is performed in which aging is performed for a long time in a high-temperature environment in order to increase the phase transformation temperature.
  • a manganese-based alloy described in Patent Document 1 is used. (Mn-20Cu-5Ni-2Fe (atomic ratio)) is known to have a phase transformation temperature not exceeding 100 ° C even after aging for 200 hours in an environment of 400 ° C.
  • the conventional manganese-based alloy manufacturing technology does not allow the phase transformation temperature to be raised to 100 ° C or higher, and manufactures a manganese-based alloy that operates in a high temperature environment of 100 ° C or higher. I could not.
  • Patent Document 1 Japanese Patent No. 2849698
  • Patent Document 2 Japanese Patent No. 3345640
  • Patent Document 3 Japanese Patent Laid-Open No. 2003-226951
  • Patent Document 4 Japanese Patent Laid-Open No. 2005-23362
  • the present invention solves the problems of the prior art as described above, can increase the phase transformation temperature of the manganese-based alloy to 100 ° C or higher, and has a damping function in a high-temperature environment of 100 ° C or higher. It is an object to provide a manifested manganese-based alloy and a method for producing the same.
  • phase transformation temperature of a manganese-based alloy can be improved by controlling the alloy structure of the manganese-based alloy.
  • the phase transformation temperature of the manganese-based alloy can be raised to 100 ° C or higher by locally distributing a high manganese composition part with a high manganese content inside the manganese-based alloy.
  • increasing the manganese content increases the phase transformation temperature S, and increasing the manganese content in the alloy decreases the forgeability and workability. There was no alloy.
  • the phase transformation temperature can be increased. At a temperature below the phase transformation temperature of the manganese-based alloy, the twin structure is maintained and the damping function is activated.By increasing the phase transformation temperature of the manganese-based alloy to 100 ° C or higher, the operating temperature of the damping function is increased. A manganese-based alloy with an upper limit of 100 ° C or higher can be obtained.
  • the present invention has been completed based on the above technical knowledge, and has the following features.
  • the manganese-based alloy of the present invention contains 15 to 25% by mass of copper and 60% by mass or more of manganese, and additionally contains at least one of nickel, iron and aluminum.
  • the upper limit of the operating temperature of the damping function when the phase transformation temperature is 100 ° C or higher and the loss factor is 0.03 is 100 ° C or higher.
  • the second method for producing a manganese-based alloy of the present invention copper 15-25 wt%, a manganese content 60 mass 0/0 above, additionally nickel, at least one of iron or aluminum Manufacture of a manganese-based alloy containing nickel in a range of 0 to 7% by mass of nickel, 0 to 5% by mass of iron and 0 to 5% by mass of aluminum, with the remainder being allowed to contain inevitable impurities.
  • the average cooling rate when cooling from 1150 ° C to 900 ° C is set within the range of 0.05 to 0.5 ° C / sec. 3 characterized by being subjected to an aging treatment within a range of 50 to 650 ° C and within a range of 20 to 50 hours.
  • the manganese-based alloy contains 15 to 25% by mass of copper and 60% by mass or more of manganese, and at least one of nickel, iron, and aluminum is added to the nickel.
  • Kell is contained in the range of 0-7% by mass
  • iron is in the range of 0-5% by mass
  • aluminum is in the range of 0-5% by mass. Operates stably.
  • the average cooling rate when cooling from 1150 ° C to 900 ° C is 0.05 to 0.5 ° C / sec.
  • a high manganese composition part with a high manganese content can be generated locally, and the phase transformation temperature rises while maintaining forgeability and workability, and after forging.
  • the phase transformation temperature becomes 100 ° C or higher, and the operating temperature of the damping function corresponding to a loss factor of 0.03
  • the upper limit of is surely over 100 ° C.
  • the vibration control function operates stably even in a high temperature environment of 100 ° C or higher.
  • FIG. 1 Use a chart that shows the temperature history during manufacture of the manganese-based alloys of Samples 10 and 2-0.
  • FIG. 2 Observation images obtained by observing the polished surfaces with an optical microscope after the surfaces of the manganese-based alloys of Sample 10 and Sample 2-0 were polished by electropolishing.
  • FIG. 3 The local composition of the manganese-based alloys of Samples 10 and 2-0 in the alloy structure was measured at a number of locations on the manganese-based alloy using an electron probe microanalyzer (EPMA) and calculated from the measured values.
  • EPMA electron probe microanalyzer
  • 5 is a graph in which the weight percentage of manganese is plotted on the horizontal axis and the ratio of the number of measurement points corresponding to the weight percentage to the total number of measurement points is plotted on the vertical axis.
  • FIG. 4 is a graph showing the relationship between the temperature and Young's modulus of the manganese-based alloys of Sample 10 and Sample 2-0.
  • FIG. 5 is a graph showing the relationship between the temperature and loss factor of the manganese-based alloys of Sample 10 and Sample 2-0.
  • the manganese-based alloy contains 60 mass% or more of manganese.
  • the manganese content is less than 60% by mass, it is difficult to raise the phase transformation temperature to 100 ° C or higher because the high manganese composition part with a high manganese content cannot be distributed locally. .
  • the high manganese composition part can be distributed inside the alloy, and the loss coefficient in the upper limit of the operating temperature of the damping function, that is, the loss coefficient-temperature graph is The temperature corresponding to 0.03 (hereinafter referred to as the vibration suppression upper limit temperature) can be raised to 100 ° C or higher.
  • the manganese content is preferably 75% or less as an atomic ratio of the whole alloy from the viewpoint of the forgeability and workability of the damping alloy.
  • the manganese-based alloy contains 15 to 25% by mass of copper in addition to manganese, and at least one of nickel, iron, and aluminum is additionally added to nickel as required. Is contained in the range of 0 to 7% by mass, iron is contained in the range of 0 to 5% by mass, and aluminum is contained in the range of 0 to 5% by mass.
  • the manganese-based alloy may include one or more of nickel, iron, and aluminum, or may not include nickel, iron, and aluminum at all, that is, the content may be zero. In such a composition, in addition to the damping function, the workability and mechanical properties required for the damping alloy are improved. In particular, by containing at least one or both of nickel and iron, the workability of the manganese-based alloy and the stability of the damping function are improved.
  • Such a manganese-based alloy is manufactured by melting and mixing each raw material element in the above composition, and then cooling and forging.
  • the average cooling rate when cooling from 1150 ° C to 900 ° C shall be in the range of 0.05 to 0.5 ° C / sec.
  • the average cooling rate By setting the average cooling rate to 0.5 ° C / second or less, a high manganese composition is formed inside the manganese-based alloy, and the phase transformation temperature of the manganese-based alloy increases.
  • the average cooling rate is set to 0.05 ° C / second or more, the production cycle time of the manganese-based alloy is shortened, and efficient production becomes possible.
  • the manganese-based alloy after forging is subjected to an aging treatment in the range of 350 to 650 ° C for 20 to 50 hours.
  • an aging treatment in the range of 350 to 650 ° C for 20 to 50 hours.
  • the phase transformation temperature becomes 100 ° C or higher, and the vibration suppression upper limit temperature can be surely made 100 ° C or higher.
  • the loss factor is 0.03.
  • the upper limit of the operating temperature of the vibration control function is over oo ° c.
  • the “loss factor” is the ratio between the storage shear modulus (G ′) and the loss shear modulus (G ”) of a manganese-based alloy, G” / G
  • cooling from 800 ° C to room temperature is slower than 45 ° C / hour! /, At a cooling rate or for a time of 20 hours or more. It is more certain that the temperature exceeds 100 ° C.
  • the saddle type was provided with stainless steel sheathed thermocouples at three locations in order to measure the force and temperature of the molten metal.
  • One is on the vertical surface layer (1), and the other is from the side surface on the center line connecting the center positions of the two side surfaces (two side surfaces consisting of the vertical and horizontal sides) of the alloy ingot inside the vertical shape.
  • the remaining one is the center position of the two sides of the alloy ingot inside the saddle type (two sides consisting of the vertical side and the horizontal side) They were placed at the position (3) on the center line connecting the two from the side surface to a depth of half the thickness of the alloy ingot.
  • the cooling rate data was calculated using the temperature measurement at the position (2). As shown in Figure 1, the average cooling rate during cooling from 1 150 ° C to 900 ° C was 0.1 ° C / sec. Manganese-based alloy (Sample 10) was obtained.
  • a manganese-based alloy was produced in the same manner as Sample 10, except that the cage was changed to a water-cooled metal cage. As shown in Figure 1, the average cooling rate during cooling from 1 150 ° C to 900 ° C during cooling was 20 ° C / sec (see Figure 1). A manganese-based alloy (Sample 2-0) was obtained. [0020] The surface of the manganese-based alloy (Samples 10 and 2-0) was polished by electropolishing, and the polished surface was observed with an optical microscope (see Fig. 2) to evaluate the alloy structure of the fabricated manganese-based alloy. The crystal grains of sample 10 are equiaxed grains, and the crystal grains of sample 2-0 are elongated along the cooling direction!
  • composition distribution refers to the mass percentage of manganese calculated from measurement with an electron probe microanalyzer (EPMA), and the ratio of the number of measurement points corresponding to that mass percentage to the total number of measurement points. It was calculated as the full width at half maximum of the peak curve that appears when plotted on the axis.
  • the composition distribution was 9.65% for sample 10 and 3.57% for sample 2-0.
  • the composition distribution degree is preferably 5% or higher.
  • a strip-shaped test piece having a length of 60 mm, a width of 10 mm, and a height of 1 mm was cut out from the fabricated manganese-based alloy ingot as a test piece for evaluating damping function by machining.
  • DMA solid body viscoelasticity measuring apparatus
  • the Young's modulus E was determined from the ratio between the stress amplitude and the strain amplitude, and tan ⁇ corresponding to the loss factor was determined as the damping function from the phase difference between the stress amplitude and the strain amplitude.
  • the measurement was performed at a rate of 5 ° C / min in the temperature range of 100 to 200 ° C, and the vibration frequency was changed to three conditions of 0.1, 1.0, and 10Hz.
  • the magnesium-based alloy in which the average cooling rate of sample 2-0 is increased exhibits high vibration damping characteristics in a low-temperature environment below room temperature, while the Young's modulus Is about 30 GPa lower than that of the magnesium-based alloy with a slower average cooling rate for Sample 1-0. This is thought to be due to the remarkable anisotropy of crystal growth caused by rapid solidification.
  • the manganese-based alloy (Sample 10) was subjected to an aging treatment at 400 ° C. for 2 hours to obtain Sample 11.
  • sample 2-0 For a manganese-based alloy (Sample 2-0), set to 400 ° C, perform aging treatment for 2 hours, perform Sample 2-1 for 5 hours, perform Sample 2-2 for 10 hours, Sample 2-3 was performed for 20 hours, Sample 2-4 was performed for 50 hours, and Sample 2-5 was obtained.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
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Abstract

L'invention concerne un alliage qui comprend entre 15 et 25% en masse de cuivre et au moins 60% en masse de manganèse et qui contient en outre au moins entre 0 et 70% en masse de nickel, entre 0 et 5% en masse de fer et/ou entre 0 et 5% en masse d'aluminium, le reste étant éventuellement constitué d'impuretés inévitables. Ledit alliage est produit selon un procédé qui consiste à mélanger des métaux en tant que matière première, à mélanger les métaux en fusion puis à couler le mélange dans des conditions de refroidissement, la vitesse de refroidissement moyenne lors du refroidissement du mélange de 1150 à 900°C étant réglée sur 0,05 à 0,5°C/s et le mélange étant soumis à un vieillissement dans la plage de 350 à 650°C pendant 20 à 50 heures et présentant, conformément au procédé, une température de transition de phase supérieure ou égale à 100°C et une limite supérieure de température d'utilisation de fonction d'amortissement supérieure ou égale à 100°C à un coefficient de perte de 0,03.
PCT/JP2007/071828 2006-11-10 2007-11-09 Allliage de manganèse-base et procédé de production de ce dernier WO2008056785A1 (fr)

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JP2006305096A JP4744420B2 (ja) 2006-11-10 2006-11-10 高温制振マンガン基合金の製造方法
JP2006-305096 2006-11-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104152764A (zh) * 2014-08-31 2014-11-19 中南大学 一种粉末冶金多孔锰铜阻尼材料及其制备方法
CN109913674A (zh) * 2019-02-24 2019-06-21 宝鸡市嘉诚稀有金属材料有限公司 一种航空航天级高锰含量的铝锰合金的制备方法

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JP5076609B2 (ja) * 2007-04-17 2012-11-21 大同特殊鋼株式会社 Ｍｎ−Ｃｕ系制振合金及びその製造方法
RU2639751C1 (ru) * 2016-07-20 2017-12-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тульский государственный университет" (ТулГУ) Способ термообработки листов из сплавов системы Mn-Cu
CN113652562B (zh) * 2021-07-16 2022-01-28 西安钢研功能材料股份有限公司 一种锰镍铜合金的保护性熔炼及浇注方法
CN114107770A (zh) * 2021-08-18 2022-03-01 上海大学 一种复合相变强化型高阻尼锰镍基减震合金制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871310A (fr) * 1971-12-28 1973-09-27
JPS51133120A (en) * 1975-05-16 1976-11-18 Komatsu Ltd Mn-cu silent alloy
JPS5311810A (en) * 1976-07-20 1978-02-02 Komatsu Mfg Co Ltd High damping capacity alloy
JPS5443814A (en) * 1977-09-16 1979-04-06 Mitsubishi Heavy Ind Ltd Heat treatment method for damping alloy
JPH07242977A (ja) * 1994-02-28 1995-09-19 Natl Res Inst For Metals マンガン基制振合金およびその製造法
JP2002146498A (ja) * 2000-11-08 2002-05-22 Seishin:Kk 制振合金製加工品
JP2005023362A (ja) * 2003-07-01 2005-01-27 Daido Steel Co Ltd マンガン基双晶型制振合金の熱処理方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871310A (fr) * 1971-12-28 1973-09-27
JPS51133120A (en) * 1975-05-16 1976-11-18 Komatsu Ltd Mn-cu silent alloy
JPS5311810A (en) * 1976-07-20 1978-02-02 Komatsu Mfg Co Ltd High damping capacity alloy
JPS5443814A (en) * 1977-09-16 1979-04-06 Mitsubishi Heavy Ind Ltd Heat treatment method for damping alloy
JPH07242977A (ja) * 1994-02-28 1995-09-19 Natl Res Inst For Metals マンガン基制振合金およびその製造法
JP2002146498A (ja) * 2000-11-08 2002-05-22 Seishin:Kk 制振合金製加工品
JP2005023362A (ja) * 2003-07-01 2005-01-27 Daido Steel Co Ltd マンガン基双晶型制振合金の熱処理方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104152764A (zh) * 2014-08-31 2014-11-19 中南大学 一种粉末冶金多孔锰铜阻尼材料及其制备方法
CN109913674A (zh) * 2019-02-24 2019-06-21 宝鸡市嘉诚稀有金属材料有限公司 一种航空航天级高锰含量的铝锰合金的制备方法

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