Multi-main-element alloy for cutter and preparation method of multi-main-element alloy

A multi-principal alloy and cutting tool technology, which is applied in the direction of improving process efficiency and energy efficiency, can solve problems such as high melting point, achieve low sintering temperature, high production efficiency, and inhibit the formation of intermetallic compounds.

Inactive Publication Date: 2017-06-27
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of alloy can make full use of the characteristics of the host metal element (such as good plasticity and high melting point), but it is also limited by the host metal element

Method used

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  • Multi-main-element alloy for cutter and preparation method of multi-main-element alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 0.40mol of aluminum powder, cobalt powder, copper powder, iron powder, manganese powder and nickel powder according to the chemical formula AlCoCuFeMnNi, and the purity of each pure metal powder is higher than 99.5%; Add an appropriate amount of stainless steel balls to the ball milling jar, and then seal the ball milling jar with pure metal powder under a nitrogen atmosphere; place the above sealed ball milling jar on a planetary ball mill for mixing, and the mixing speed is 250rpm , the time is 0.5h; put the powder after the above uniform mixing into the graphite mold under the protection of nitrogen gas, and then put the graphite mold into the discharge plasma sintering furnace; load an initial pre-pressure of 10MPa on the graphite mold, and then put the The furnace cavity is evacuated to below 100Pa, and the temperature is rapidly raised to 900°C, kept for 2 hours, and the sintering is completed to obtain the required multi-principal alloy.

Embodiment 2

[0019] Weigh 0.40mol of aluminum powder, cobalt powder, copper powder, iron powder, manganese powder, nickel powder and zinc powder according to the chemical formula AlCoCuFeMnNiZn, and the purity of each pure metal powder is higher than 99.5%; Put the metal powder in a ball mill jar, add an appropriate amount of stainless steel balls, and then seal the ball mill jar with pure metal powder under a nitrogen atmosphere; put the above sealed ball mill jar on a planetary ball mill for mixing. The rotation speed is 200rpm, and the time is 1.5h; put the above-mentioned uniformly mixed powder into the graphite mold under the protection of nitrogen gas, and then put the graphite mold into the discharge plasma sintering furnace; load an initial pre-set pressure of 9MPa on the graphite mold , and then evacuate the furnace cavity to below 100Pa, quickly raise the temperature to 1100°C, keep it warm for 1.5h, and sinter to obtain the required multi-principal alloy.

Embodiment 3

[0021] According to the chemical formula Al 0.6 CoCuFeMnNiZn weighs 0.24mol of aluminum powder and 0.40mol of cobalt powder, copper powder, iron powder, manganese powder, nickel powder and zinc powder respectively, and the purity of each pure metal powder is higher than 99.5%; Put the pure metal powder in a ball mill jar, add an appropriate amount of stainless steel balls, and then seal the ball mill jar with the pure metal powder in an argon atmosphere; place the sealed ball mill jar on a planetary ball mill for mixing, The mixing speed is 150rpm, and the time is 3h; put the above uniformly mixed powder into the graphite mold under the protection of nitrogen gas, and then put the graphite mold into the discharge plasma sintering furnace; load an initial pre-pressure on the graphite mold 8MPa, then evacuate the furnace cavity to below 100Pa, rapidly raise the temperature to 1200°C, keep it for 1h, and sinter to obtain the required multi-principal alloy.

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Abstract

The invention provides a multi-main-element alloy for a cutter. The multi-main-element alloy is manufactured from metal powder, and the chemical formula of the multi-main-element alloy is Al<x>CoCuFe<y>MnNiZn<z>. A preparation method of the multi-main-element alloy comprises the following steps of weighing the metal powder according to the chemical formula, putting the weighed metal powder in a ball milling tank, adding an appropriate number of stainless steel balls in the ball milling tank, and sealing the ball milling tank under inert gases; placing the sealed ball milling tank in a ball milling machine and performing mixing; loading the mixed powder in a graphite mold under the protection of the inert gases, and loading the mold in a discharging plasma sintering furnace; and loading prepressure, performing vacuumizing, performing temperature rise, and performing heat preservation so as to obtain the multi-main-element alloy. According to the multi-main-element alloy disclosed by the invention, a multi-main-element alloy material of which the ingredients are uniform can be obtained, and the formation of intermetallic compounds is effectively restrained; the preparation method is high in temperature rising speed, low in sintering temperature, and high in production efficiency; and the product is tiny and uniform in structure, and the material of high density can be obtained.

Description

technical field [0001] The invention belongs to the field of metal materials and their preparation, and in particular relates to a multi-principal alloy for cutting tools and a preparation method thereof. Background technique [0002] Most of the traditional alloys are based on one metal, and the phase structure and microstructure of the alloy are changed by adding a small amount or trace amount of alloying elements to meet the requirements of the alloy composition. This type of alloy can make full use of the characteristics of the host metal element (such as good plasticity and high melting point), but it is also limited by the host metal element. Multi-principal alloys have jumped out of the design idea of ​​traditional alloys dominated by a single element, relying on a nearly equimolar ratio (5-35at%) of multiple (at least 5) metal atoms to form an alloy. Such alloys may form new microstructures and have excellent properties after alloying and processing, thereby breakin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/06C22C1/04B22F3/105
CPCB22F3/105B22F2003/1051C22C1/04C22C30/02C22C30/06Y02P10/25
Inventor 马明星王志新张文勇彭竹琴宋梦梁存梅俊歌周家臣
Owner ZHONGYUAN ENGINEERING COLLEGE
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