Triple smelting process of difficult-to-deform nickel-based high-temperature alloy GH4151

A nickel-based superalloy, GH4151 technology, applied in the field of hot processing, can solve the problem of low degree of dendrite segregation, and achieve the effect of low degree of dendrite segregation, reduced sulfur and inclusion content, and good plasticity

Active Publication Date: 2020-08-11
BEIJING CISRI GAONA TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems existing in the existing technology, this patent provides a triple smelting process of the hard-to-deform nickel-based superalloy GH4151 alloy, which can stably produce consumable ingots with a maximum size of Φ508mm, and solves the cracking of large-size consumable ingots The problem is that the dendrite segre

Method used

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  • Triple smelting process of difficult-to-deform nickel-based high-temperature alloy GH4151
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  • Triple smelting process of difficult-to-deform nickel-based high-temperature alloy GH4151

Examples

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Embodiment 1

[0034] Example 1. A triple smelting process of a difficult-to-deform nickel-based superalloy GH4151

[0035] This example mainly describes a triple smelting process of a hard-to-deform nickel-based superalloy GH4151. The triple smelting process is specifically vacuum induction furnace smelting (VIM) + protective atmosphere electroslag remelting (P-ESR) + vacuum Consumable remelting (VAR) smelting. The diameter of alloy ingots for vacuum induction furnace smelting (VIM) is 360mm, the diameter of alloy ingots for protective atmosphere electroslag remelting (P-ESR) is 450mm, and the diameter of alloy ingots for vacuum consumable remelting (VAR) is 508mm.

[0036] The process flow of vacuum induction melting (VIM) includes the following steps:

[0037] Step 1.1: According to the composition requirements of the GH4151 alloy, weigh the raw materials. The weight percentage (wt.%) of each raw material is: C0.04, Co 14.0, Cr 10.0, Mo 4.0, W 2.5, V 0.40, Ti 2.50, Al 3.5, Nb 3.0, S=0.0...

Embodiment 2

[0065] Example 2: A triple smelting process of a hard-to-deform nickel-based superalloy GH4151

[0066] This example mainly describes a triple smelting process of a hard-to-deform nickel-based superalloy GH4151. The triple smelting process is specifically vacuum induction furnace smelting (VIM) + protective atmosphere electroslag remelting (P-ESR) + vacuum Consumable remelting (VAR) smelting. The diameter of alloy ingots for vacuum induction furnace smelting (VIM) is 350mm, the diameter of alloy ingots for protective atmosphere electroslag remelting (P-ESR) is 450mm, and the diameter of alloy ingots for vacuum consumable remelting (VAR) is 508mm.

[0067] The process flow of vacuum induction melting (VIM) includes the following steps:

[0068] Step 1.1: According to the composition requirements of the GH4151 alloy, weigh the raw materials. The weight percentage (wt.%) of each raw material is: C0.08, Co 16.0, Cr 12.0, Mo 5.0, W 3.5, V 0.80, Ti 3.10, Al 4.0, Nb 3.5, S=0.0005, ...

Embodiment 3

[0096] Example 3: A triple smelting process of a hard-to-deform nickel-based superalloy GH4151

[0097] This example mainly describes a triple smelting process of a hard-to-deform nickel-based superalloy GH4151. The triple smelting process is specifically vacuum induction furnace smelting (VIM) + protective atmosphere electroslag remelting (P-ESR) + vacuum Consumable remelting (VAR) smelting. The diameter of the alloy ingot for vacuum induction furnace smelting (VIM) is 340mm, the diameter of alloy ingot for protective atmosphere electroslag remelting (P-ESR) is 430mm, and the diameter of alloy ingot for vacuum consumable remelting (VAR) is 508mm.

[0098] The process flow of vacuum induction melting (VIM) includes the following steps:

[0099] Step 1.1: According to the composition requirements of GH4151 alloy, weigh the raw materials. The weight percentage (wt.%) of each raw material is: C0.07, Co 15.0, Cr 11.0, Mo 4.5, W 3, V 0.50, Ti 2.70, Al 3.7, Nb 3.2, S=0.0001, Ni in...

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Abstract

The invention discloses a triple smelting process of a difficult-to-deform nickel-based high-temperature alloy GH 4151. The triple smelting process comprises the following steps of: firstly, weighingraw materials of the GH4151 according to the component requirements of the GH4151; then, sequentially carrying out vacuum induction furnace smelting, protective atmosphere electroslag remelting smelting and vacuum consumable remelting smelting according to set process parameters; carrying out stress relief annealing treatment on an electrode and a consumable ingot in a triple smelting process; andfinally, stably preparing a GH4151 consumable ingot with the maximum size of phi 508mm. According to the GH4151 consumable ingot obtained by the triple smelting process disclosed by the invention, the cracking problem of the large-size consumable ingot is solved; the dendritic segregation degree of the prepared phi 508mm consumable ingot is relatively low and the content of sulfur and impuritiesis also greatly reduced; and the metallurgical quality of the GH4151 alloy is improved and a foundation is laid for preparing large-specification bars and large-size disc forged pieces of the GH4151 alloy.

Description

technical field [0001] The invention belongs to the technical field of thermal processing, and in particular relates to a triple smelting process of a difficult-to-deform nickel-based superalloy GH4151 alloy. Background technique [0002] The turbine disk is a key hot-end part of an aircraft engine, and its metallurgical quality and performance level play a decisive role in improving the reliability, safety life and performance of the engine and aircraft. With the development of high thrust-to-weight / power-to-weight ratio engines, higher requirements are put forward for the temperature bearing capacity, high temperature strength, long life, toughness, fatigue performance, reliability and durability of turbine disks. The degree of alloying of deformed superalloys is getting higher and higher, the content of γ′ phase is getting higher and higher, and the purity is getting higher and higher; at the same time, the diameter of the turbine disk is also increasing, requiring large-...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C1/03C22F1/10C22B9/18
CPCC22B9/18C22C1/023C22C1/03C22C19/056C22F1/10Y02P10/25
Inventor 曲敬龙唐超杜金辉王民庆毕中南秦鹤勇邓群张北江于鸿垚
Owner BEIJING CISRI GAONA TECH
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