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A kind of heat treatment method of high-strength nickel alloy

A heat treatment method and nickel alloy technology, applied in the field of heat treatment of alloy materials, can solve the problems such as toughness can not meet the increasingly diverse applications, unsatisfactory high temperature performance, toughness influence and so on

Inactive Publication Date: 2015-07-29
东莞市翔旭实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, it also has very high requirements for strength, but when the strength increases, it often affects the toughness
In the case of its increased strength, its high-temperature performance is not satisfactory, and its toughness cannot meet the increasingly diverse applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A heat treatment method for a high-strength nickel alloy, characterized in that: the chemical composition of the high-strength nickel alloy contains by weight percentage: Al: 3.6-5.8%, Cr: 16%, Co: 1.9%, B: 2.8%, Si: 1.4%, C: 0.1%, Mo: 1.9%, Nb: 1.8%, Ta: 0.9%, Ti: 0.8%, Fe: 3.9%, RE: 0.18%, Cu: 1.12%, Hf: 0.004%, Mn: 0.03%, the balance is Ni and unavoidable impurities;

[0021] The heat treatment method is as follows: homogenize the high-strength nickel alloy after smelting, casting and forging, then perform isothermal rolling treatment, and then perform aging heat treatment to obtain a high-strength nickel alloy;

[0022] The homogenization is as follows: heat preservation at 1060°C for 17 hours for the first stage of homogenization, then increase the temperature to 1170°C, heat preservation for 28 hours for the second stage of homogenization, and then lower the temperature to 1085°C for 26 hours for the third stage of homogenization Homogenization, and then increase...

Embodiment 2

[0025] The heat treatment method of high-strength nickel alloy is characterized in that: the chemical composition of the high-strength nickel alloy contains by weight percentage: Al: 4.7%, Cr: 19%, Co: 1.9%, B: 2.9%, Si: 1.4% , C: 0.18%, Mo: 1.9%, Nb: 1.9%, Ta: 0.950%, Ti: 0.6%, Fe: 4.9%, Y: 0.19%, Cu: 1.10%, Hf: 0.05%, Mn: 0.03% , and the balance is Ni and unavoidable impurities.

[0026] The heat treatment method is as follows: homogenize the high-strength nickel alloy after smelting, casting and forging, then perform isothermal rolling treatment, and then perform aging heat treatment to obtain a high-strength nickel alloy;

[0027] The homogenization is as follows: heat preservation at 1060°C for 17 hours for the first stage of homogenization, then increase the temperature to 1170°C, heat preservation for 28 hours for the second stage of homogenization, and then lower the temperature to 1085°C for 26 hours for the third stage of homogenization Homogenization, and then incr...

Embodiment 3

[0030] A heat treatment method for a high-strength nickel alloy, the chemical composition of the high-strength nickel alloy contains: Al: 4.7%, Cr: 19%, Co: 1.9%, B: 2.9%, Si: 1.4%, C : 0.18%, Mo: 1.9%, Nb: 1.9%, Ta: 0.950%, Ti: 0.6%, Fe: 4.9%, cerium-rich misch: 0.19%, Cu: 1.10%, Hf: 0.05%, Mn: 0.03 %, the balance is Ni and unavoidable impurities;

[0031] The heat treatment method is as follows: homogenize the high-strength nickel alloy after smelting, casting and forging, then perform isothermal rolling treatment, and then perform aging heat treatment to obtain a high-strength nickel alloy;

[0032] The homogenization is as follows: heat preservation at 1020°C for 16 hours for the first stage of homogenization, then increase the temperature to 1160°C, heat preservation for 25 hours for the second stage of homogenization, and then lower the temperature to 1080°C for 18 hours for the third stage of homogenization Homogenization, and then increase the temperature to 1150 ° C,...

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Abstract

The invention relates to a heat treatment method for high-intensity nickel alloy. The heat treatment method is characterized in that the high-intensity nickel alloy comprises the following chemical components in percentage by weight: Al, Cr, Co, B, Si, C, Mo, Nb, Ta, Ti, Fe, RE, Cu, Hf, Mn, and the balance of Ni and inevitable impurities. The heat treatment method comprises the following steps of: homogenizing high-intensity nickel alloy in three stages after smelting, casting and forging; processing by rolling at a constant temperature; and then performing aging heat treatment by four steps to obtain the high-intensity nickel ally. With the adoption of a microstructure prepared by special alloy collocation and preparation method, the high-intensity nickel alloy is relatively high in intensity and toughness, and outstanding in high temperature performance.

Description

technical field [0001] The invention belongs to the field of heat treatment of alloy materials, in particular to a high-strength nickel alloy and a heat treatment method thereof. Background technique [0002] The main development direction of high-performance structural materials is to study new materials with high strength, high toughness, high hardness, light weight, high oxidation resistance and good processability. Nickel alloys have superior high temperature performance and mechanical properties, and are currently widely used alloys. Therefore, it has been widely used in the field of modern science, defense industry and civilian industry. However, in practical applications, it also has very high requirements for strength, but when the strength increases, it often affects the toughness. In the case of its increased strength, its high-temperature performance is not satisfactory, and its toughness cannot meet the increasingly diverse applications. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/10C22C19/05
Inventor 徐茂航
Owner 东莞市翔旭实业有限公司