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Method for homogenization and high purification preparing Ni-Cr-Co-Fe-Mn high-entropy alloy through electron beam smelting

A ni-cr-co-fe-mn, electron beam smelting technology, applied in the field of alloy preparation, can solve the problems of complex process, long process, metal powder contamination, etc., and achieve the effect of high purity and uniform composition

Active Publication Date: 2019-11-08
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are problems such as long process and complicated process in mechanical alloying, and the conditions need to be strictly controlled during the alloying process to avoid contamination of metal powder

Method used

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  • Method for homogenization and high purification preparing Ni-Cr-Co-Fe-Mn high-entropy alloy through electron beam smelting
  • Method for homogenization and high purification preparing Ni-Cr-Co-Fe-Mn high-entropy alloy through electron beam smelting
  • Method for homogenization and high purification preparing Ni-Cr-Co-Fe-Mn high-entropy alloy through electron beam smelting

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Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] A method for preparing a Ni-Cr-Co-Fe-Mn high-entropy alloy through homogenization and high purification by electron beam smelting has the following steps:

[0045] 1. Raw material preparation

[0046] 1. Weigh each raw material of Ni-Cr-Co-Fe-Mn high entropy alloy according to the following mass

[0047] Table 1 raw material ratio

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Abstract

The invention discloses a method for homogenization and high purification preparing an Ni-Cr-Co-Fe-Mn high-entropy alloy through electron beam smelting. The method comprises the following steps of weighing Ni-Cr-Co-Fe-Mn high-entropy alloy raw materials including Ni, Cr, Co, Fe and Mn; cleaning the weighted raw materials for later use; putting the cleaned raw materials into a water cooling coppercrucible of an electron beam smelting furnace; carrying out vacuum pre-pumping on the electron beam smelting furnace, and then carrying out high vacuum pumping on the electron beam smelting furnace toachieve a high vacuum standard; carrying out electron beam smelting on the raw materials in the water cooling copper crucible, and then performing instantaneous beam current reduction and rapid solidification to obtain a sample cooled to the room temperature; and carrying out turn-over re-melting on the sample cooled to the room temperature in the water cooling copper crucible, and then performing instantaneous beam current reduction and rapid solidification to obtain a Ni-Cr-Co-Fe-Mn high-entropy alloy. The method has the advantages that the Ni-Cr-Co-Fe-Mn high-entropy alloy with high purityand uniform components can be efficiently prepared, no shrinkage cavities exist in cast ingots, and the quality of cast ingot metallurgy is effectively controlled.

Description

technical field [0001] The invention relates to a method for preparing an alloy, in particular to a method for preparing a Ni-Cr-Co-Fe-Mn high-entropy alloy through electron beam smelting, homogenization and high purification. Background technique [0002] Multi-principal high-entropy alloys have excellent properties such as high strength, good wear resistance, high work hardening, high temperature softening resistance, high temperature oxidation resistance, corrosion resistance and high electrical resistivity, or a combination of these excellent properties. Based on the above advantages, high-entropy alloys have been applied in high-speed cutting tools, golf head striking surfaces, hydraulic and pneumatic rods, hard surfaces of steel pipes and rollers, and high-frequency soft magnetic films. [0003] The preparation methods of high-entropy alloy bulk materials are generally as follows: vacuum arc melting, vacuum induction melting, powder metallurgy and mechanical alloying. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C30/00C22B9/22
CPCC22B9/228C22C1/02C22C22/00C22C30/00
Inventor 谭毅赵龙海庄辛鹏孙满意
Owner DALIAN UNIV OF TECH