a l1 2 Precipitation-strengthened high-entropy alloy and preparation method thereof

A high-entropy alloy and precipitation strengthening technology, applied to high-strength and wear-resistant parts, L12 type precipitation-strengthening high-entropy alloy and its preparation field, can solve the problems of high brittleness, influence of final alloy properties, difficult control of particle shape and size, etc.
CN111593250BActive Publication Date: 2022-02-08SHENYANG POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENYANG POLYTECHNIC UNIV
Publication Date
2022-02-08

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Abstract

The invention relates to the technical field of alloy preparation, in particular to a L1 2 The invention discloses a precipitation-strengthened high-entropy alloy and a preparation method thereof, which are suitable for high-strength and wear-resistant components used in service at room temperature. The L1 2 Type precipitation-strengthened high-entropy alloys are directly mixed with TiN ceramic phases in AlCoCrFeNi high-entropy alloys with a body-centered cubic structure to obtain nanostructures (Ni 3 [Al, Ti]) of AlCoCrFeNi(TiN) x High entropy alloy, x is 0.2, 0.4, 0.6, 0.8, 1.0. The present invention prepares high-entropy alloys containing ceramic phases through vacuum electric arc furnace melting technology, and obtains L1 with better toughness by adjusting the content of TiN elements in different atomic ratios. 2 type nanostructure (Ni 3 [Al, Ti]), analyze and observe the change of mechanical properties, so as to obtain the high-entropy alloy with the best comprehensive mechanical properties.
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Description

Technical field

[0001] The present invention relates to the field of alloy preparation techniques, particularly, to a L1 2 Precipitation strengthening type high entropy alloy and preparation method for parts of high wear resistance at room temperature and service applications. Background technique

[0002] High-entropy alloys since the introduction of widespread concern, its unique properties is expected to break through the bottleneck of traditional alloys. 1 or 2 as a main alloy element is added unlike the conventional alloying elements, supplemented by additional design, high entropy alloys typically consist of more than four main elements, a constant ratio of atomic designed. Moreover, excellent performance of its high entropy alloy having five closely related characteristics: ① high entropic effect on the thermodynamics; slow diffusion effect on the kinetics ②; ③ lattice distortion effect on the structure; 'cocktail effect' on performance ④ ; ⑤ high stability on the tissue. ...

Claims

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