GH4169 high-temperature alloy capable of determining component coordinated change relation on basis of cluster type method and preparation method

A GH4169, changing relationship technology, applied in the field of superalloys, can solve the problems of complex heat treatment process, complex alloy preparation process, waste of energy, etc., and achieve the effect of overcoming composition uncertainty, simple and effective preparation process, and improved preparation process.

Pending Publication Date: 2021-12-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ma Jun et al. studied the three elements Nb, Al, and Ti in "Metal Heat Treatment" (The Effect of Chemical Composition on the Microstructure and Mechanical Properties of GH4169 Alloy, 2020, Volume 45, Page 197-204), although the composition range of individual elements is within It is within the range specified by the national standard, but there are significant differences in the performance of each batch. The imprecise range of elements leads to a decrease in the performance of the alloy. The elongation of the alloy is only about 15%, and the yield strength is only about 1000MPa; After that, the elongation of the alloy can reach about 22%, and the yield strength is about 1200MPa
This shows that a wide range of individual elements or ignoring the interaction between elements will cause a wide range of alloy performance changes, and it is impossible to obtain alloys with excellent properties. In actual industrial production, technicians usually manufacture alloys according to empirical components. The complexity of the process makes it impossible to design and prepare rational alloy components
[0005] Under...

Method used

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  • GH4169 high-temperature alloy capable of determining component coordinated change relation on basis of cluster type method and preparation method
  • GH4169 high-temperature alloy capable of determining component coordinated change relation on basis of cluster type method and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the mass percent of alloy is:

[0026] 50.7Ni-20.93Cr-17.37Fe-0.70Co-0.38Cu-2.87Mo-5.48Nb-0.51Al-1.01Ti-0.05C (wt%).

[0027] Step 1: Alloy Preparation

[0028] High-purity metal materials are used, and ingredients are prepared according to mass percentage. The ingredients are smelted at least four times in a vacuum non-consumable arc melting furnace under the protection of an argon atmosphere to obtain an alloy ingot with a uniform composition and a mass of about 120 g, and the mass loss during the smelting process does not exceed 0.1%. The alloy ingot was homogenized by a muffle furnace, the homogenization temperature was 1200°C, and the treatment time was 24h. Subsequent multi-pass cold rolling was carried out to obtain plate samples of 1.5-2.0 mm. Then solid solution treatment at 1050°C for 0.5h, water cooling or oil cooling to room temperature can obtain the solid solution alloy material designed by the present invention; keep the solid solution al...

Embodiment 2

[0031] Embodiment 2: the mass percent of alloy is:

[0032] 52.58Ni-17.67Cr-18.05Fe-0.3Mn-0.65Co-0.2Cu-2.88Mo-5.49Nb-0.65Al-1.15Ti-0.33Si-0.05C (wt%).

[0033] Step 1: Alloy Preparation

[0034] High-purity metal materials are used, and ingredients are prepared according to mass percentage. The ingredients are smelted at least four times in a vacuum non-consumable arc melting furnace under the protection of an argon atmosphere to obtain an alloy ingot with a uniform composition and a mass of about 120 g, and the mass loss during the smelting process does not exceed 0.1%. The alloy ingot was homogenized by a muffle furnace, the homogenization temperature was 1200°C, and the treatment time was 24h. Subsequent multi-pass cold rolling was carried out to obtain plate samples of 1.5-2.0 mm. Then solid solution treatment at 1050°C for 0.5h, water cooling or oil cooling to room temperature can obtain the solid solution alloy material designed by the present invention; keep the soli...

Embodiment 3

[0037] Embodiment 3: the mass percent of alloy is:

[0038] 54.41Ni-17.7Cr-17.37Fe-3.46Mo-5.59Nb-0.32Al-1.15Ti (wt%).

[0039] Step 1: Alloy Preparation

[0040] High-purity metal materials are used, and ingredients are prepared according to mass percentage. The ingredients are smelted at least four times in a vacuum non-consumable arc melting furnace under the protection of an argon atmosphere to obtain an alloy ingot with a uniform composition and a mass of about 120 g, and the mass loss during the smelting process does not exceed 0.1%. The alloy ingot was homogenized by a muffle furnace, the homogenization temperature was 1200°C, and the treatment time was 24h. Subsequent multi-pass cold rolling was carried out to obtain plate samples of 1.5-2.0 mm. Then solid solution treatment at 1040°C for 0.5h, water cooling or oil cooling to room temperature can obtain the solid solution alloy material designed by the present invention; keep the solid solution alloy at 710°C for 8h,...

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Abstract

The invention discloses a GH4169 high-temperature alloy capable of determining the component coordinated change relation on the basis of a cluster type method and a preparation method. According to the method, GH4169 high-temperature alloying elements are divided into Ni-like elements which enter a cluster type and contain Ni, Fe, Co and Cu, Cr-like elements which contain Cr, Mo, Mn and Si, Nb-like elements which contain Nb, Al and Ti, and trace elements which do not enter the cluster type and contain C, P, S, B, Mg and Ca; the coordinated change relation of all the elements is that Ni+1.02Fe+Co+Cu is larger than or equal to 68.93 and smaller than or equal to 72.68, Cr+0.64Mo+Mn+1.67Si is larger than or equal to 19.84 and smaller than or equal to 22.78, and Nb+3.22Al+1.85Ti is larger than or equal to 8.67 and smaller than or equal to 9.81. The coordinated change relation of the new components is simple and effective, the component standardization mode of the high-temperature alloy is thoroughly reformed, and the development of the high-temperature alloy is promoted.

Description

technical field [0001] The invention belongs to the field of high-temperature alloys, in particular to a GH4169 high-temperature alloy and a corresponding preparation method for establishing a synergistic change relationship of components based on a cluster method. Background technique [0002] Superalloys refer to a class of metal materials based on iron, cobalt, and nickel that can serve at high temperatures above 600°C. The superalloy is a single austenite matrix structure, which has high high temperature strength, oxidation resistance and corrosion resistance, and has good structure stability and service reliability. It is often called a superalloy abroad. Compared with cobalt-based superalloys, nickel-based superalloys have better strong plasticity, and compared with iron-based superalloys, they have better temperature bearing capacity. As a representative alloy in nickel-based superalloys, GH4169 superalloys are the most widely used Wide range of deformed superalloys....

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C30/00C22C30/02C22C1/02C22F1/10G06F30/20G16C20/10G06F119/18
CPCC22C19/055C22C30/02C22C30/00C22F1/10C22C1/023G06F30/20G16C20/10G06F2119/18
Inventor 李言成王清董闯赵亚军邹存磊张爽
Owner DALIAN UNIV OF TECH
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