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A kind of high-strength and toughness multi-component precision high-resistance alloy and its preparation method

A multi-component, high-resistance technology, applied in the field of metal material preparation, can solve the problems of poor resistivity stability, low resistance value, poor strength and toughness, and achieve the effect of low resistivity temperature coefficient and high strength

Active Publication Date: 2022-04-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above and / or deficiencies in the prior art, the present invention provides a high-strength, toughness, multi-component precision high-resistance alloy and a preparation method thereof, which solve the problem of poor toughness, low resistance, and poor stability of resistivity in existing large quantities of resistance alloys. technical issues

Method used

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  • A kind of high-strength and toughness multi-component precision high-resistance alloy and its preparation method
  • A kind of high-strength and toughness multi-component precision high-resistance alloy and its preparation method
  • A kind of high-strength and toughness multi-component precision high-resistance alloy and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0063] (1) According to the chemical formula Ni 55 Cr 20 Fe 10 al 8 mn 4 Cu 1 Si 2 (atomic percentage) is carried out batching, and raw material uses the block corresponding to each pure element;

[0064] (2) Suspension smelting is adopted, smelting is carried out under an inert gas protective atmosphere, and smelting is repeated 4 times; during smelting, the vacuum degree is pumped to 0.001 Pa, and then argon gas is injected until the pressure is slightly positive. shape, to obtain an alloy billet;

[0065] (3) After obtaining the smelted alloy ingot, the alloy is subjected to multi-pass hot rolling treatment, the hot rolling temperature is 1323K, the single rolling reduction is 10%, and the total rolling reduction is 50%;

[0066] (4) Carry out high-temperature homogenization treatment to the hot-rolled alloy block, carry out under argon protection atmosphere (argon gas pressure is 10Pa), temperature is 1373K, homogenization treatment time is 2 hours, then water quenc...

Embodiment 2

[0077] (1) According to the chemical formula Ni 55 Cr 20 Fe 10 al 8 mn 4 Cu 1 Si 2 (atomic percentage) is carried out batching, and raw material uses the block corresponding to each pure element;

[0078] (2) Suspension smelting is adopted, smelting is carried out under an inert gas protective atmosphere, and smelting is repeated 4 times; the vacuum degree is pumped to 0.001 Pa during smelting, and then argon gas is injected until the pressure is slightly positive. The smelting temperature is 1873K, and the heat preservation is 5 minutes. shape;

[0079] (3) After obtaining the smelted alloy ingot, the alloy is subjected to multi-pass hot rolling treatment, the hot rolling temperature is 1323K, the single rolling reduction is 10%, and the total rolling reduction is 50%;

[0080] (4) Carry out high-temperature homogenization treatment to the hot-rolled alloy block, carry out under argon protection atmosphere (argon gas pressure is 10Pa), temperature is 1373K, homogenizat...

Embodiment 3

[0087] (1) According to the chemical formula Ni 55 Cr 20 Fe 10 al 8 mn 4 Cu 1 Si 2 (atomic percentage) is carried out batching, and raw material uses the block corresponding to each pure element;

[0088] (2) Suspension smelting is adopted, smelting is carried out under an inert gas protective atmosphere, and smelting is repeated 4 times; the vacuum degree is pumped to 0.001 Pa during smelting, and then argon gas is injected until the pressure is slightly positive. The smelting temperature is 1873K, and the heat preservation is 5 minutes. shape;

[0089] (3) After obtaining the smelted alloy ingot, the alloy is subjected to multi-pass hot rolling treatment, the hot rolling temperature is 1323K, the single rolling reduction is 10%, and the total rolling reduction is 50%;

[0090] (4) Carry out high-temperature homogenization treatment to the hot-rolled alloy block, carry out under argon protection atmosphere (argon gas pressure is 10Pa), temperature is 1373K, homogenizatio...

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Abstract

The invention discloses a high-strength, toughness, multi-component precision high-resistance alloy and a preparation method thereof. The alloy is composed of the following components by atomic percentage: Ni 45-60%, Cr 15-30%, Fe 5-20% , Al 5-15%, Mn 3-5%, Cu 0.2-3%, Si 1-5%; the sum of the atomic percentages of Mn, Cu, Si ≤ 13% and ≥ 4.2%; Ni, Cr, Fe , the sum of the atomic percentages of Al ≥ 70% and ≤ 95.8%; the sum of the atomic percentages of each component is 100%. The multi-element alloy matrix prepared by the present invention presents the structural characteristics of a face-centered cubic structure, which has excellent strength and plasticity; at the same time, it has high resistivity and excellent resistivity stability in a wide temperature range below 773K .

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a high-strength and toughness multi-component precision high-resistance alloy and a preparation method thereof. Background technique [0002] Resistance alloys can be divided into precision resistance alloys, resistance alloys for sensors, and electrothermal alloys according to their different applications. High resistance alloys are generally resistance alloys with a resistivity higher than 100 μΩ.cm. Precision resistance alloys require a high degree of precision, time stability and temperature stability in their resistance. Precision high-resistance alloys refer to precision resistance alloys with high resistivity (higher than 100μΩ.cm) and low temperature coefficient of resistance. Resistance alloys for sensors are often used as strain resistance alloys, which can measure stress from deep low temperature to high temperature, such as constantan ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05C22C30/02C22C1/02C22F1/10C22F1/02
CPCC22C19/058C22C30/02C22C1/023C22F1/10C22F1/02C22C30/00C22C1/02
Inventor 李志明朱书亚严定舜甘科夫张勇
Owner CENT SOUTH UNIV