EP3896183A1 - Alliage léger à forte entropie de cuivre présentant une grande résistance et une grande plasticité et son procédé de préparation - Google Patents

Alliage léger à forte entropie de cuivre présentant une grande résistance et une grande plasticité et son procédé de préparation Download PDF

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Publication number
EP3896183A1
EP3896183A1 EP19895264.0A EP19895264A EP3896183A1 EP 3896183 A1 EP3896183 A1 EP 3896183A1 EP 19895264 A EP19895264 A EP 19895264A EP 3896183 A1 EP3896183 A1 EP 3896183A1
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Prior art keywords
entropy alloy
alloy
smelting
lightweight
preparation
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EP19895264.0A
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German (de)
English (en)
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EP3896183A4 (fr
Inventor
Yunfei XUE
Songshen CHEN
Liang Wang
Tangqing CAO
Benpeng WANG
Fuchi WANG
Lu Wang
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • 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
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C16/00—Alloys based on zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each 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
    • 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
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
    • 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
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/186—High-melting or refractory metals or alloys based thereon of zirconium or alloys based thereon

Definitions

  • the present invention relates to a lightweight high-entropy alloy with high strength and high plasticity and a preparation method thereof, belonging to the fields of metal materials and preparation thereof.
  • a high-entropy alloy is an alloy formed by combining five or more elements in an approximate equi-atomic ratio and is also referred to as a multi-principal-element and high-irregularity alloy. Due to a multi-principal-element effect (a high-entropy effect, a lattice distortion effect, a lagged diffusion effect and a cocktail effect), the high-entropy alloy shows a metallurgical-physical effect mechanism different from that of traditional alloy and further shows a series of excellent properties such as outstanding high-temperature strength, good low-temperature plasticity, good wear resistance, good corrosion resistance and excellent radiation resistance. With the development of research, the range of the high-entropy alloy is widened, elements are no longer limited to five or more than five elements, the atomic proportion also gradually deviates from an equi-atomic ratio, and the designability of the alloy is greatly improved.
  • the present invention provides a lightweight high-entropy alloy with high strength and high plasticity and a preparation method thereof.
  • the high-entropy alloy has low density, high strength and high plasticity so as to have a huge application potential in the field of engineering.
  • the preparation method of the high-entropy alloy is easy to operate as well as safe and reliable, and the high-entropy alloy is economical and practical.
  • M is preferably one or more of Al, Hf, Cr, Fe, Mg, Be, Li, Mo, Co and Ni.
  • a preparation method of the high-entropy alloy provided by the present invention includes the following steps:
  • purities of the elemental raw materials Ti, Zr, V, Nb and M are respectively greater than or equal to 99.7wt%.
  • the smelting furnace is preferably an electric arc smelting furnace.
  • the protective gas is preferably argon.
  • a lightweight high-entropy alloy Ti 60 Zr 20 V 3 Nb 17 with high strength and high plasticity is prepared by the following steps:
  • the prepared high-entropy alloy Ti 60 Zr 20 V 3 Nb 17 is mainly composed of a BCC phase. It can be known from a metallograph in Fig. 2 that the prepared high-entropy alloy Ti 60 Zr 20 V 3 Nb 17 is of an equiaxed grain structure. It can be known from a test result in Fig. 8 that the prepared high-entropy alloy Ti 60 Zr 20 V 3 Nb 17 has the yield strength of 758.06 MPa and the elongation at break of 18.11%. It can be known by test and calculation that the prepared high-entropy alloy Ti 60 Zr 20 V 3 Nb 17 has the density of 5.8356 g/cm 3 .
  • a lightweight high-entropy alloy Ti 30 Zr 27 V 18 Nb 25 with high strength and high plasticity is prepared by the following steps:
  • the prepared high-entropy alloy Ti 30 Zr 27 V 18 Nb 25 is mainly composed of a BCC phase. It can be Known from a metallograph in Fig. 3 that the prepared high-entropy alloy Ti 30 Zr 27 V 18 Nb 25 is of an equiaxed grain structure. It can be known from a test result in Fig. 8 that the prepared high-entropy alloy Ti 30 Zr 27 V 18 Nb 25 has the yield strength of 991.64 MPa and the elongation at break of 12.95%. It can be known by test and calculation that the prepared high-entropy alloy Ti 30 Zr 27 V 18 Nb 25 has the density of 6.0938 g/cm 3 .
  • a lightweight high-entropy alloy Ti 50 Zr 18 V 12 Nb 16 Al 4 with high strength and high plasticity is prepared by the following steps:
  • the prepared high-entropy alloy Ti 50 Zr 18 V 12 Nb 16 Al 4 is mainly composed of a BCC phase. It can be known from a metallograph in Fig. 4 that the prepared high-entropy alloy Ti 50 Zr 18 V 12 Nb 16 Al 4 is of an equiaxed grain structure. It can be known from a test result in Fig. 8 that the prepared high-entropy alloy Ti 50 Zr 18 V 12 Nb 16 Al 4 has the yield strength of 795.2 MPa and the elongation at break of 36.57%. It can be known by test and calculation that the prepared high-entropy alloy Ti 50 Zr 18 V 12 Nb 16 Al 4 has the density of 5.6072 g/cm 3 .
  • a lightweight high-entropy alloy Ti 40 Zr 23 V 13 Nb 19 Al 5 with high strength and high plasticity is prepared by the following steps:
  • the prepared high-entropy alloy Ti 40 Zr 23 V 13 Nb 19 Al 5 is mainly composed of a BCC phase. It can be known from a metallograph in Fig. 5 that the prepared high-entropy alloy Ti 40 Zr 23 V 13 Nb 19 Al 5 is of an equiaxed grain structure. It can be known from a test result in Fig. 8 that the prepared high-entropy alloy Ti 40 Zr 23 V 13 Nb 19 Al 5 has the yield strength of 1077.3 MPa and the elongation at break of 25.84%. It can be known by test and calculation that the prepared high-entropy alloy Ti 40 Zr 23 Vi 3 Nbi 9 Al 5 has the density of 5.9201 g/cm 3 .
  • a lightweight high-entropy alloy Ti 30 Zr 45 Nb 7 Al 8 Hf 10 with high strength and high plasticity is prepared by the following steps:
  • the prepared high-entropy alloy Ti 30 Zr 45 Nb 7 Al 8 Hf 10 is mainly composed of a BCC phase. It can be known from a metallograph in Fig. 6 that the prepared high-entropy alloy Ti 30 Zr 45 Nb 7 Al 8 Hf 10 is of an equiaxed grain structure. It can be known from a test result in Fig. 8 that the prepared high-entropy alloy Ti 30 Zr 45 Nb 7 Al 8 Hf 10 has the yield strength of 710.59 MPa and the elongation at break of 12.35%. It can be known by test and calculation that the prepared high-entropy alloy Ti 30 Zr 45 Nb 7 Al 8 Hf 10 has the density of 6.4338 g/cm 3 .
  • a lightweight high-entropy alloy Ti 50 Zr 25 V 7 Nb 12 Al 5 Fe 1 with high strength and high plasticity is prepared by the following steps:
  • the prepared high-entropy alloy Ti 50 Zr 25 V 7 Nb 12 Al 5 Fe 1 is mainly composed of a BCC phase. It can be known from a metallograph in Fig. 7 that the prepared high-entropy alloy Ti 50 Zr 25 V 7 Nb 12 Al 5 Fe 1 is of an equiaxed grain structure. It can be known from a test result in Fig. 8 that the prepared high-entropy alloy Ti 50 Zr 25 V 7 Nb 12 Al 5 Fe 1 has the yield strength of 995.49 MPa and the elongation at break of 9.45%. It can be known by test and calculation that the prepared high-entropy alloy Ti 50 Zr 25 V 7 Nb 12 Al 5 Fe 1 has the density of 5.5533 g/cm 3 .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP19895264.0A 2018-12-10 2019-11-19 Alliage léger à forte entropie de cuivre présentant une grande résistance et une grande plasticité et son procédé de préparation Withdrawn EP3896183A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811500843.2A CN109402482B (zh) 2018-12-10 2018-12-10 一种兼具高强度和高塑性的轻质高熵合金及其制备方法
PCT/CN2019/000222 WO2020118802A1 (fr) 2018-12-10 2019-11-19 Alliage léger à forte entropie de cuivre présentant une grande résistance et une grande plasticité et son procédé de préparation

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EP3896183A1 true EP3896183A1 (fr) 2021-10-20
EP3896183A4 EP3896183A4 (fr) 2022-08-10

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CN114150205A (zh) * 2021-11-26 2022-03-08 中国航发北京航空材料研究院 一种具有高室温塑性的耐高温高熵合金及其制备方法
CN114275735A (zh) * 2021-12-28 2022-04-05 安徽工业大学 一种含Mg室温可逆储氢高熵合金粉体材料及其制备方法
CN114622121A (zh) * 2022-03-25 2022-06-14 赣南师范大学 一种中熵合金及其制备方法
CN117789875A (zh) * 2023-12-14 2024-03-29 广东海洋大学 一种设计高强度高熵合金的数据驱动方法及应用

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CN107841673B (zh) * 2017-11-08 2019-08-20 湖南理工学院 一系列Fe-Co-Cr-Ni-Al高熵合金及其热处理工艺
CN108220740B (zh) * 2018-01-15 2020-07-07 湘潭大学 一种耐磨、耐蚀高熵合金材料及其制备方法
CN108220742B (zh) * 2018-03-14 2022-10-18 北京中辰至刚科技有限公司 一种微合金化Ti-Zr-Hf-V-Nb-Ta难熔高熵合金及其制备方法
CN108677077B (zh) * 2018-08-01 2020-05-22 北京理工大学 一种高比强度高塑性的难熔高熵合金及其制备方法
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CN114150205A (zh) * 2021-11-26 2022-03-08 中国航发北京航空材料研究院 一种具有高室温塑性的耐高温高熵合金及其制备方法
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