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Boron-containing high-silicon Monel alloy and preparation method thereof

A kind of monel, high silicon technology, applied in boron-containing high-silicon monel alloy, the preparation of boron-containing high-silicon monel alloy, the field of high-silicon monel alloy, can solve the problem of mechanical properties, corrosion resistance and process performance. It can improve the comprehensive mechanical and corrosion resistance properties, improve the grain boundary strength, and avoid dendrite segregation.

Inactive Publication Date: 2010-05-05
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a boron-containing high-silicon monel alloy, which solves the problems of poor mechanical performance, corrosion resistance and process performance of the existing high-silicon monel alloy due to dendrite segregation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to the mass percentage, weigh 28.0% Cu powder, 2.0% Fe powder, 1.0% Mn powder, 3.5% Si powder, 0.01% B powder, and the balance is Ni powder, the sum of the mass percentages of each component 100%, the above alloy powder was put into a mixer and stirred for 6 hours to fully stir the alloy powder evenly, then pressed into a block and put into an alumina crucible, and the alumina crucible was put into a vacuum furnace for smelting. The smelting adopts ZRS-18Q microcomputer program-controlled vacuum high-temperature sintering furnace. The smelting process is as follows: the temperature rises from room temperature to 300°C within 20 minutes, then rises from 300°C to 1000°C within 30 minutes, and finally rises from 1000°C to 1000°C within 40 minutes. The temperature rises to 1350°C, the temperature is maintained for 30 minutes, and the furnace is cooled to room temperature to obtain a boron-containing high-silicon monel alloy.

Embodiment 2

[0019] According to the mass percentage, take by weighing 30.0% Cu powder, 0.5% Mn powder, 4.5% Si powder, 0.03% B powder, the remainder is Ni powder, the sum of the mass percentages of each component is 100%, the above-mentioned Put the alloy powder into the mixer and stir for 10 hours to make the alloy powder fully stir evenly, then press it into a block and put it into an alumina crucible, and then put the alumina crucible into a vacuum furnace for melting. The smelting adopts ZRS-18Q microcomputer program-controlled vacuum high-temperature sintering furnace. The smelting process is as follows: the temperature rises from room temperature to 400°C within 30 minutes, then rises from 400°C to 1100°C within 40 minutes, and finally rises from 1100°C to 1100°C within 50 minutes. The temperature rises to 1450°C, the temperature is kept for 60 minutes, and the furnace is cooled to room temperature to obtain a boron-containing high-silicon monel alloy.

Embodiment 3

[0021] According to the mass percentage, take by weighing 29% Cu powder, 1.0% Fe powder, 4.0% Si powder, 0.05% B powder, the remainder is Ni powder, the sum of the mass percentages of each component is 100%, the above-mentioned The alloy powder is put into the mixer and stirred for 8 hours to fully stir the alloy powder evenly, then pressed into a block and put into an alumina crucible, and put the alumina crucible into a vacuum furnace for melting. The smelting adopts the ZRS-18Q microcomputer program-controlled vacuum high-temperature sintering furnace. The smelting process is as follows: the temperature rises from room temperature to 350°C within 25 minutes, then rises from 350°C to 1050°C within 35 minutes, and finally rises from 1050°C to 1050°C within 45 minutes. The temperature rises to 1400°C, the temperature is kept for 40 minutes, and the furnace is cooled to room temperature to obtain a boron-containing high-silicon monel alloy.

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Abstract

The invention discloses a boron-containing high-silicon Monel alloy which comprises the following components by weight percent: 28.0%-30.0% of Cu, 0-2.0% of Fe, 0-1.0% of Mn, 3.5%-4.5% of Si, 0.01%-0.10% of B and the balance of Ni, and the sum of the weight weights of all the components is 100%. The method for preparing the alloy comprises the following steps of firstly weighing alloy powder according to the mixing ratio, placing the weighed alloy powder into a mixing machine for mixing for 6-10 hours for leading the alloy powder to be fully evenly mixed, then pressing into a block, placing into an alumina crucible, and placing the alumina crucible containing the block-shaped alloy material into a vacuum furnace for melting, thereby obtaining the boron-containing high-silicon Monel alloy. The boron-containing high-silicon Monel alloy and the preparation method can solve the problems that the existing high-silicon Monel alloy has poor mechanical performance, corrosion-resistant performance and process performance due to dendrite segregation.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a high-silicon monel alloy, in particular to a boron-containing high-silicon monel alloy, and also relates to a preparation method of the boron-containing high-silicon monel alloy. Background technique [0002] The high-silicon monel alloy is a nickel alloy mainly composed of metallic nickel and supplemented by metallic copper, wherein Si accounts for 3.5%-4.5% (wt%). High-silicon monel alloy is especially suitable for high-strength and strong-corrosive media, such as aviation, marine, chemical equipment and other parts. However, because the main components of the alloy, Ni and Cu, are very easy to oxidize and absorb gas, a large number of pores will be formed or a large number of inclusions will be formed on the grain boundaries during solidification, resulting in a serious decline in the performance of the alloy, which seriously restricts the application range of the...

Claims

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Application Information

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IPC IPC(8): C22C19/03C22C1/05C22C1/10
Inventor 邹军涛韩昶梁淑华范志康
Owner XIAN UNIV OF TECH
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