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High-strength nickel-base superalloy and manufacturing method thereof

A technology of nickel-based superalloy and manufacturing method, which is applied in the field of metal smelting, can solve the problems of reducing service performance and achieve the effects of improving medium temperature plasticity, reducing failure, matching high strength and plasticity

Inactive Publication Date: 2016-08-03
宝钢特钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Composite addition of P and B can improve the durability of some nickel-based alloys (such as Inconel718), but for alloys similar to X-750, P is a harmful element, which will significantly reduce the performance, and add more boron that absorbs neutron elements , cannot be used in devices such as boiling water nuclear reactors

Method used

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  • High-strength nickel-base superalloy and manufacturing method thereof
  • High-strength nickel-base superalloy and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. According to the formula ingredients in Table 2, control C to be 0.079%, Cr to be 15.3%, Fe to be 7.11%, Mn to be 0.04%, Nb to be 1.01%, Al to be 0.79%, Ti to be 2.57%, and P to be 0.007% , S is 0.003%, Si is 0.06%, Cu is 0.03%, Mg is 0.003%, Ce is 0.0028%, Zr is 0.046%, and the balance is nickel and unavoidable impurities.

[0041] 2. Through vacuum induction melting and casting into Φ290 electrodes, the electrodes are remelted with argon protection electroslag or vacuum self-consumption to obtain Φ400 steel ingots. Among them, the setting of remelting process parameters, such as melting speed, etc., is limited to the fact that no metallurgical segregation occurs in the final steel ingot or finished product.

[0042] 3. After the steel ingot is heated to 1100-1200 ° C for at least 2 hours, it is forged and opened, and the opened billet is 120 square billets. The starting forging temperature is: 1050~1150°C, the final forging temperature is ≥900°C, and air-cooled to...

Embodiment 2

[0046] 1. According to the formula ingredients in Table 2, control C to be 0.050%, Cr to be 15.4%, Fe to be 8.21%, Mn to be 0.36%, Nb to be 1.06%, Al to be 0.74%, Ti to be 2.53%, and P to be 0.007% , S is 0.003%, Si is 0.05%, Cu is 0.02%, Mg is 0.002%, Ce is 0.0024%, Zr is 0.045%, and the balance is nickel and unavoidable impurities.

[0047] 2. Through vacuum induction melting and casting into Φ290 electrodes, the electrodes are remelted with argon protection electroslag or vacuum self-consumption to obtain Φ400 steel ingots. Among them, the setting of remelting process parameters, such as melting speed, etc., is limited to the fact that no metallurgical segregation occurs in the final steel ingot or finished product.

[0048] 3. After the steel ingot is heated to 1100-1200°C for a sufficient time, it is forged and billeted, and the billet is 120 square billets. The starting forging temperature is: 1050~1150°C, the final forging temperature is ≥900°C, and air-cooled to room ...

Embodiment 3

[0052] 1. According to the formula ingredients in Table 2, control C to be 0.052%, Cr to be 15.5%, Fe to be 6.78%, Mn to be 0.05%, Nb to be 1.05%, Al to be 0.89%, Ti to be 2.27%, and P to be 0.006% , S is 0.002%, Si is 0.02%, Cu is 0.03%, Mg is 0.003%, Ce is 0.0042%, Zr is 0.040%, and the balance is nickel and unavoidable impurities.

[0053] 2. Through vacuum induction melting and casting into Φ290 electrodes, the electrodes are remelted with argon protection electroslag or vacuum self-consumption to obtain Φ400 steel ingots. Among them, the setting of remelting process parameters, such as melting speed, etc., is limited to the fact that no metallurgical segregation occurs in the final steel ingot or finished product.

[0054] 3. After the steel ingot is heated to 1100-1200 ° C for at least 2 hours, it is forged and opened, and the opened billet is 120 square billets. The starting forging temperature is: 1050~1150°C, the final forging temperature is ≥900°C, and air-cooled to...

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Abstract

The invention discloses a high-strength nickel-based superalloy and a manufacturing method thereof. The alloy comprises the following components by weight percentage: C0.02-0.08; Cr14.0-17.0; Fe5.0-9.0%; Al0 .50~1.30; Ti2.25~2.75; Nb0.7~1.2; Mn0.02~1.0; Mg0.001~0.006; Ce0.001~0.03; Zr0.01~0.06; ≤0.30; Cu≤0.30, the balance is nickel and unavoidable impurities. The manufacturing method of the alloy is vacuum induction melting and heat treatment. The invention has the advantages that it can significantly reduce the failure of components during use, and has good application prospects.

Description

technical field [0001] The invention relates to a high-strength nickel-based superalloy and a manufacturing method thereof, belonging to the technical field of metal smelting. Background technique [0002] Superalloys refer to a class of alloys that can withstand a certain stress at temperatures above 600°C and have oxidation and corrosion resistance. According to the substrate, it can be divided into iron-based, nickel-based and cobalt-based. Among them, nickel-based superalloys are widely used in aerospace engines, gas turbines, oil and gas fields, automobile industries and other fields due to their excellent oxidation resistance and high temperature strength. The performance of superalloys depends on the alloy composition and manufacturing process system. Among them, high temperature strength and oxidation and corrosion resistance are the most important properties of superalloys, which are ultimately determined by the microstructure of the finished steel. With the advan...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22F1/10
Inventor 王资兴代朋超陈国胜王庆增魏志刚吴静曹秀丽
Owner 宝钢特钢有限公司
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