EP2646590A1 - Verres métalliques à surface structurée et leur procédé de fabrication - Google Patents

Verres métalliques à surface structurée et leur procédé de fabrication

Info

Publication number
EP2646590A1
EP2646590A1 EP11788419.7A EP11788419A EP2646590A1 EP 2646590 A1 EP2646590 A1 EP 2646590A1 EP 11788419 A EP11788419 A EP 11788419A EP 2646590 A1 EP2646590 A1 EP 2646590A1
Authority
EP
European Patent Office
Prior art keywords
metallic glasses
hardness
structured
structured metallic
metallic
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
Application number
EP11788419.7A
Other languages
German (de)
English (en)
Other versions
EP2646590B1 (fr
Inventor
Bujar Jerliu
Jürgen Eckert
Sergio Scudino
Kumar-Babu Surreddi
Simon Pauly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leibniz Institut fuer Festkorper und Werkstofforschung Dresden eV
Original Assignee
Leibniz Institut fuer Festkorper und Werkstofforschung Dresden eV
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 Leibniz Institut fuer Festkorper und Werkstofforschung Dresden eV filed Critical Leibniz Institut fuer Festkorper und Werkstofforschung Dresden eV
Publication of EP2646590A1 publication Critical patent/EP2646590A1/fr
Application granted granted Critical
Publication of EP2646590B1 publication Critical patent/EP2646590B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/003—Making ferrous alloys making amorphous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/11—Making amorphous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/001—Amorphous alloys with Cu as the major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/005—Amorphous alloys with Mg as the major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/02—Amorphous alloys with iron as the major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/10—Amorphous alloys with molybdenum, tungsten, niobium, tantalum, titanium, or zirconium or Hf as the major constituent
    • 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

Definitions

  • the invention relates to the field of materials science and process engineering and relates surface-structured metallic glasses, such as housing materials for mobile phones, laptops or USB sticks, as components of precision engineering, such as screws, springs, gears or joints, as implant materials, such as For example, in dentistry, or as components in the automotive industry and in the aerospace industry can be used and a method for producing the structuring.
  • Metallic glasses are metastable metallic alloys, which can be obtained inter alia by melting metallic alloying elements and subsequent rapid solidification of the melt. Due to the lack of periodic ordering of the atoms, such metastable metallic alloys or metallic glasses have an amorphous structure and exhibit deformation mechanisms other than conventional crystalline alloys, such as e.g. Steels. Thanks to this special atomic structure, the metallic glasses have high yield strengths and high elastic strains with low modulus of elasticity. This combination of properties means that metallic glasses can store high elastic energies. However, the structure of metallic glasses changes under load, and the areas that have irreversibly (plastically) deformed are more susceptible to further deformation. This behavior results in a localization of the deformation in small areas, the so-called shear bands.
  • shear bands are under further load starting points for the break. Since the shear bands are on the order of a few nanometers, their contribution to the macroscopic plastic elongation of the metallic glasses is very small. Thus, the mostly metallic glasses fail catastrophically and without measurable plastic strain under mechanical stress. Since some plastic deformation failure tolerance is needed for component applications, the intrinsic brittleness of metallic glasses severely restricts their application (MF Ashby et al., Scripta Mater. 54, (2006) 321; CA Schuh et al. , Acta Mater. 55, (2007) 4067).
  • the failure behavior of metallic solid glass can be improved by various mechanical pretreatments.
  • sand-blasting shot-peening
  • shots-peening causes the surface of metallic glasses to be plastically deformed and the introduced stresses lead to an increase in plasticity under uniaxial pressure loading (Y. Zhang et al., Nature Mater. 5 (2006) 857).
  • the object of the present invention is to specify surface-structured metallic glasses whose plasticity is increased under compressive and tensile loading, and to provide a simple, time-efficient and cost-effective method for producing the surface structuring.
  • the surface-structured metallic glasses according to the invention consist of a body of a metastable metallic alloy having one or more depressions with an aspect ratio of at least 1:> 1 on at least one of its surfaces, wherein in the area directly around the wells, the alloy material has a lower hardness and next or areas of increased hardness are present around the areas of lower hardness, wherein lower hardness and increased hardness relates to the hardness of the alloy material prior to the introduction of the recess (s).
  • the body consists of Zr 5 7Ti 5 Cu2oNi8Alio, Z ⁇ sTisCu ⁇ gNiu eAl-io, Cu47.5Zr47.5AI5, Cu45Zr4 5 Al 0 , Cu48Zr36AI 8 Ag 8 , Cu 5 oZr 5 o, Mg54Cu26.5Ag8.5Gdn, Ti 5 oNi24Cu2oBiSi2Sn 3 , Fe48Cri5Moi4Er 2 Ci5B 6 or C ⁇ eZ ⁇ A ⁇ Ys.
  • a plurality of wells are present, more preferably 2 to 100 wells.
  • the depressions have a round, square, rectangular, triangular, polygonal cross-section or a cross section similar to this cross-sectional shapes. And also advantageously depressions are present, which are dimensioned in terms of their number and dimensions so that still undeformed and / or unclaimed material areas are present in the body.
  • the regions with higher and lower hardness differ by at least 5% from the hardness that was present before the introduction of the depressions.
  • the aspect ratio of the depth of the depression to the length of the depression is 1: 1, advantageously 1: 10 or 1:> 100.
  • a body is produced from a metallic glass, subsequently at least one of the surfaces of the cooled body is inserted in at least one recess in at least one recess, wherein the tool has the negative shape of the recess and the Tool applied to at least one surface and introduced by uniaxial pressure one or more wells in the surface simultaneously or successively.
  • a tool which consists of a material having a greater hardness than the metallic glass and does not deform under the applied pressure.
  • a plurality of recesses are introduced into opposing surfaces of the body of a metallic glass.
  • one or more depressions are introduced on the circumference of a round body made of a metallic glass.
  • the present solution makes it possible for the first time to specify and produce surface-structured metallic glasses whose plasticity is increased under compressive and tensile loading. This is particularly advantageous because metallic glasses are generally intrinsically brittle.
  • this surface structuring of the metallic glasses can be realized for the first time by a simple, time-efficient and cost-effective method.
  • one or more wells are introduced by means of a tool on one or more surfaces of a body of a metallic glass.
  • a uniaxial pressure is exerted on the surface of the metallic glass via the tool.
  • the introduced depressions represent the surface structuring.
  • the shape of the recesses both in cross-section, length and width can be very diverse and it is not limited according to the invention. It may advantageously be geometric shapes, which, however, also do not have to be accurate due to the production, but may also resemble geometric shapes. These can be, for example, parallel lines all the way to wavy patterns or grid structures. It may be on one or more surfaces of the body of the metallic G las same or different recesses in terms of both the shape and the number and the direction with respect to the loading axis be introduced.
  • the recesses are introduced at an angle to the loading axis, which is different from 0 ° or 360 ° and 180 ° with respect to the load axis. Even more advantageously, these angles should be between 10 and 30 ° to the loading axis.
  • At least one material area should still be present in the body of the metallic glass, which is undeformed and / or unclaimed by the introduction of the depression (s).
  • the pits can be inserted between nanometers up to several millimeters deep.
  • the aspect ratio of the depression is to be understood as the ratio of the depth of the depression to its length.
  • the length of the recess should always be greater than its depth.
  • the length is dependent on the absolute size of the body of the metallic glass between micrometers to several centimeters.
  • the uniaxial pressure can be applied to a surface of the body or to several or all surfaces of the body simultaneously or sequentially.
  • the wells can be introduced. It can be used a pressure between 10 MPa and 5000 MPa. Likewise, the pressure can be applied between 1 second and 1 hour.
  • the material used for the tool is one which has a greater hardness than the metallic glass and does not deform under the applied pressure.
  • a hardened steel or other metallic glass or other hard metals or materials with high hardness such as, for example, can be used. Be ceramics.
  • the tool can also be heated or cooled, so that the temperature at which the structuring takes place can be changed. In this case, however, the temperature range is limited by the fact that the heating may only take place below the glass transition temperature of the metallic glass used in each case. Due to this depression (s), the hardness of the material changes around the depression. Areas of lesser hardness are created directly around the pit than the hardness that the material had prior to inserting the pit. Again, adjacent to and / or around these areas of lesser hardness arise areas of increased hardness, wherein increased hardness also relates to the hardness of the material prior to the introduction of the depression.
  • shear bands Due to these different hardness ranges in the material, the emergence and spreading of shear bands upon application of tensile or compressive stresses to the surface-structured metallic glass according to the invention is made more difficult.
  • the shear bands interact with the higher and lower hardness regions in the metallic glass, and shear bands are prevented from moving freely through the material. Instead, they multiply in the areas of high hardness, which in turn increases plastic deformability.
  • Fig. 1 a shows schematically the hardness distribution of a body of a metallic
  • Fig. 1 b schematically shows the hardness distribution of a body according to the invention of a surface-structured metallic glass
  • the two opposite surfaces had a structuring of 4 wells of dimensions 35 x 0.2 x 0.08 mm 3 on.
  • This surface-structured amorphous tape was subsequently tested under tensile load at a strain rate of 0.015 mm / s, and the results are shown in FIG.
  • the plastic strain of the metallic glass under tensile load increases due to the introduced surface structuring.
  • the material breaks brittle with a plastic strain of 0%; after surface structuring, the material exhibits a plastic elongation of 3%, while the high breaking strength of 1750 MPa is not impaired.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Micromachines (AREA)

Abstract

L'invention se rapporte au domaine des sciences des matériaux et concerne des verres métalliques à surface structurée, tels qu'ils peuvent être utilisés par exemple comme matériaux pour boîtiers de téléphone mobile, d'ordinateurs portables ou de clés USB. L'objet de la présente invention est d'augmenter la plasticité de verres métalliques à surface structurée lorsqu'ils sont sollicités par une pression ou une traction. A cet effet, les verres métalliques à surface structurée présentent un ou plusieurs creux dont le rapport d'aspect est d'au moins 1 : > 1 sur au moins une de leurs surfaces. L'invention concerne en outre un procédé selon lequel un corps est fabriqué à partir d'un verre métallique, puis au moins un creux est ménagé dans au moins une des surfaces du corps refroidi au moyen d'un outil et d'une pression uniaxiale.
EP11788419.7A 2010-11-29 2011-11-18 Verres metalliques ayant une surface structurée et son procédé des fabrication Not-in-force EP2646590B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062089A DE102010062089A1 (de) 2010-11-29 2010-11-29 Oberflächenstrukturierte metallische Gläser und Verfahren zur Herstellung
PCT/EP2011/070485 WO2012072428A1 (fr) 2010-11-29 2011-11-18 Verres métalliques à surface structurée et leur procédé de fabrication

Publications (2)

Publication Number Publication Date
EP2646590A1 true EP2646590A1 (fr) 2013-10-09
EP2646590B1 EP2646590B1 (fr) 2017-05-10

Family

ID=45047754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11788419.7A Not-in-force EP2646590B1 (fr) 2010-11-29 2011-11-18 Verres metalliques ayant une surface structurée et son procédé des fabrication

Country Status (3)

Country Link
EP (1) EP2646590B1 (fr)
DE (1) DE102010062089A1 (fr)
WO (1) WO2012072428A1 (fr)

Families Citing this family (23)

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WO2014004704A1 (fr) 2012-06-26 2014-01-03 California Institute Of Technology Systèmes et procédés pour mettre en œuvre des roues dentées en verre métallique brut à échelle macroscopique
US9783877B2 (en) 2012-07-17 2017-10-10 California Institute Of Technology Systems and methods for implementing bulk metallic glass-based macroscale compliant mechanisms
US9328813B2 (en) 2013-02-11 2016-05-03 California Institute Of Technology Systems and methods for implementing bulk metallic glass-based strain wave gears and strain wave gear components
US20140342179A1 (en) 2013-04-12 2014-11-20 California Institute Of Technology Systems and methods for shaping sheet materials that include metallic glass-based materials
US9610650B2 (en) 2013-04-23 2017-04-04 California Institute Of Technology Systems and methods for fabricating structures including metallic glass-based materials using ultrasonic welding
US10081136B2 (en) 2013-07-15 2018-09-25 California Institute Of Technology Systems and methods for additive manufacturing processes that strategically buildup objects
DE102013013862A1 (de) 2013-08-20 2015-02-26 Matthias Köster Verfahren zur Herstellung dreidimensionaler Gegenstände mit metallischen Gläsern
WO2015042437A1 (fr) 2013-09-19 2015-03-26 California Institute Of Technology Systèmes et procédés permettant de fabriquer des structures comportant un matériau à base de verre métallique à l'aide d'une coulée basse pression
US10487934B2 (en) 2014-12-17 2019-11-26 California Institute Of Technology Systems and methods for implementing robust gearbox housings
US10151377B2 (en) 2015-03-05 2018-12-11 California Institute Of Technology Systems and methods for implementing tailored metallic glass-based strain wave gears and strain wave gear components
US10174780B2 (en) 2015-03-11 2019-01-08 California Institute Of Technology Systems and methods for structurally interrelating components using inserts made from metallic glass-based materials
US10155412B2 (en) 2015-03-12 2018-12-18 California Institute Of Technology Systems and methods for implementing flexible members including integrated tools made from metallic glass-based materials
US10968527B2 (en) 2015-11-12 2021-04-06 California Institute Of Technology Method for embedding inserts, fasteners and features into metal core truss panels
DE112018001284T5 (de) 2017-03-10 2019-11-28 California Institute Of Technology Verfahren zur herstellung von dehnwellengetriebe-flexsplines mittels additiver metallfertigung
WO2018218077A1 (fr) 2017-05-24 2018-11-29 California Institute Of Technology Matériaux à base de métal amorphe hypoeutectique pour fabrication additive
WO2018218247A1 (fr) 2017-05-26 2018-11-29 California Institute Of Technology Composites à matrice métallique à base de titane renforcé par des dendrites
KR102493233B1 (ko) 2017-06-02 2023-01-27 캘리포니아 인스티튜트 오브 테크놀로지 적층 가공을 위한 고강인성 금속성 유리-기반 복합물
CN109136789B (zh) * 2018-08-16 2020-11-24 深圳市锆安材料科技有限公司 一种非晶合金usb接口及其制备方法
US11680629B2 (en) 2019-02-28 2023-06-20 California Institute Of Technology Low cost wave generators for metal strain wave gears and methods of manufacture thereof
US11859705B2 (en) 2019-02-28 2024-01-02 California Institute Of Technology Rounded strain wave gear flexspline utilizing bulk metallic glass-based materials and methods of manufacture thereof
US11400613B2 (en) 2019-03-01 2022-08-02 California Institute Of Technology Self-hammering cutting tool
US11591906B2 (en) 2019-03-07 2023-02-28 California Institute Of Technology Cutting tool with porous regions
CN110777307A (zh) * 2019-09-30 2020-02-11 东莞市逸昊金属材料科技有限公司 一种非晶合金材料、使用该材料的非晶合金结构件及应用

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US8298647B2 (en) * 2007-08-20 2012-10-30 California Institute Of Technology Multilayered cellular metallic glass structures and methods of preparing the same

Also Published As

Publication number Publication date
DE102010062089A1 (de) 2012-05-31
WO2012072428A1 (fr) 2012-06-07
EP2646590B1 (fr) 2017-05-10

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