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Aluminum-rich high-entropy alloy and preparation method and application thereof

A high-entropy alloy and aluminum-rich technology, which is applied in the field of aluminum-rich high-entropy alloy and its preparation, can solve problems such as poor corrosion resistance and achieve excellent mechanical properties and good corrosion performance

Inactive Publication Date: 2021-06-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] The corrosion resistance of several common commercial materials in liquid lead-bismuth alloy is not good

Method used

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  • Aluminum-rich high-entropy alloy and preparation method and application thereof
  • Aluminum-rich high-entropy alloy and preparation method and application thereof
  • Aluminum-rich high-entropy alloy and preparation method and application thereof

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Embodiment

[0051] This embodiment prepares (FeNiCrMn) 82 al 9 Ti 9 Aluminum-rich high-entropy alloy, the equipment used is the vacuum suspension melting furnace of Shenzhen Saimet Company. Specific steps are as follows:

[0052] Put the high-purity Fe, Ni, Cr, and Mn elements into the melting furnace according to the ratio, and repeat the melting three times to obtain FeNiCrMn ingots with equiatomic ratios.

[0053] Place high-purity Al and Ti metals evenly on the top and bottom of the FeNiCrMn ingot, and repeat the melting three times to obtain (FeNiCrMn) 82 al 9 Ti 9 alloy ingot.

[0054] The (FeNiCrMn) 82 al 9 Ti 9 The alloy ingot was heated to 1150°C in a vacuum annealing furnace, homogenized and annealed for 14 hours, quenched in water and rapidly cooled to room temperature; then the above-mentioned homogenized annealed ingot was rolled to 65% of the thickness, and heated at 920°C Under recrystallization annealing for 2 hours, the finished alloy ingot is finally obtained. ...

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Abstract

The invention provides an aluminum-rich high-entropy alloy and a preparation method and an application thereof. The preparation method comprises the following steps that high-purity Fe, Ni, Cr and Mn elementary substances are put into a smelting furnace according to a proportion to prepare a FeNiCrMn cast ingots with equal atomic ratios; high-purity Al and Ti metal are evenly placed on the upper portion and the lower portion of the FeNiCrMn cast ingot respectively, repeated smelting is carried out, a (FeNiCrMn) 100-x-yAlxTiy alloy cast ingot is prepared, x is greater than or equal to 8 and smaller than or equal to 10, and y is greater than or equal to 8 and smaller than or equal to 10; and the (FeNiCrMn) 100-x-yAlxTiy alloy cast ingot is sequentially subjected to homogenizing annealing, rolling and recrystallization annealing, and then the final alloy is obtained. The aluminum-rich high-entropy alloy not only has very good liquid lead and bismuth corrosion resistance, but also has very good mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of lead-cooled fast reactors, and in particular relates to an aluminum-rich high-entropy alloy and its preparation method and application. Background technique [0002] With the continuous development of lead-cooled fast reactor technology in my country, the compatibility of materials and liquid lead-bismuth alloys in the lead-cooled fast reactor system has become increasingly prominent, and has become a key issue restricting the practical application of lead-cooled fast reactor technology in my country. Through the innovative core design, the most advanced lead-cooled fast reactor in my country can theoretically achieve continuous operation without refueling for more than 30 years, but the corrosion problem of the fuel cladding under the synergistic effect of liquid lead and strong radiation is greatly shortened. The duration of this theory. Previous studies have found that the corrosion principle of materi...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/03C22F1/02
CPCC22C1/03C22C30/00C22F1/002C22F1/02
Inventor 陈飞达申尚昆汤晓斌耿振龙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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