EP3896183A1 - Leichte hochentrope legierung mit hoher festigkeit und hoher plastizität und verfahren zu ihrer herstellung - Google Patents
Leichte hochentrope legierung mit hoher festigkeit und hoher plastizität und verfahren zu ihrer herstellung Download PDFInfo
- 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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- EP
- European Patent Office
- Prior art keywords
- entropy alloy
- alloy
- smelting
- lightweight
- preparation
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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
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- 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
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- 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
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- 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
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- 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
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- 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)
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 (zh) | 2018-12-10 | 2019-11-19 | 一种兼具高强度和高塑性的轻质高熵合金及其制备方法 |
Publications (2)
Publication Number | Publication Date |
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EP3896183A1 true EP3896183A1 (de) | 2021-10-20 |
EP3896183A4 EP3896183A4 (de) | 2022-08-10 |
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EP19895264.0A Withdrawn EP3896183A4 (de) | 2018-12-10 | 2019-11-19 | Leichte hochentrope legierung mit hoher festigkeit und hoher plastizität und verfahren zu ihrer herstellung |
Country Status (3)
Country | Link |
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EP (1) | EP3896183A4 (de) |
CN (1) | CN109402482B (de) |
WO (1) | WO2020118802A1 (de) |
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CN107739956B (zh) * | 2017-09-14 | 2019-10-29 | 北京理工大学 | 一种Nb微合金化Ni-Co-Fe-Cr-Al高熵合金 |
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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 |
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CN109402482B (zh) * | 2018-12-10 | 2022-07-05 | 北京中辰至刚科技有限公司 | 一种兼具高强度和高塑性的轻质高熵合金及其制备方法 |
-
2018
- 2018-12-10 CN CN201811500843.2A patent/CN109402482B/zh active Active
-
2019
- 2019-11-19 EP EP19895264.0A patent/EP3896183A4/de not_active Withdrawn
- 2019-11-19 WO PCT/CN2019/000222 patent/WO2020118802A1/zh unknown
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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 |
CN114622121B (zh) * | 2022-03-25 | 2022-11-08 | 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 |
CN117789875B (zh) * | 2023-12-14 | 2024-05-10 | 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 |
Also Published As
Publication number | Publication date |
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WO2020118802A1 (zh) | 2020-06-18 |
EP3896183A4 (de) | 2022-08-10 |
CN109402482B (zh) | 2022-07-05 |
CN109402482A (zh) | 2019-03-01 |
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