GH2132 high-temperature alloy based on component collaborative change relation and preparation method

A GH2132, changing relationship technology, applied in the field of superalloys, can solve the problems of large changes in alloy properties, inability to accurately guarantee comprehensive properties, inaccurate element ranges, etc., to achieve a simple and effective preparation process, overcome compositional uncertainty, and improve preparation The effect of craftsmanship

Pending Publication Date: 2022-03-04
DALIAN UNIV OF TECH
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Problems solved by technology

like figure 1 As shown, the composition area framed by the rhombus is the GB / T 14992-2005 industrial standard interval, according to etc. in "Materials Science and Engineering: A" (Combined effect of resistance spot welding and precipitation hardening ontensile shear load bearing capacity of A286superalloy, 2017, Vol. 688, No. 14, pp. 309-314) and Liu et al. in "Materials Science and Engineering : A" (The modified surface properties and fatigue life of Incoloy A286face-milled at different cutting parameters, 2017, Vol. 704, No. 14, pp. 1-9) and Seol et al. in "Science of Advanced Materials" (Influence of Solid Solution Treatment on the Mechanical Properties of A286 Stainless Steels, Vol. 8, No. 12, pp. 2290-2294) and other documents actually report the composition of GH2132 superalloy. It can be seen that the actual reported composition is mainly concentrated in the narrow range in the figure (indicated by the plus sign), while the industrial standard The composition range is too wide, which is the main reason why the alloy is difficult to optimize the composition
In "Physics of Metals and Metallography" (The Role ofηPhase on the Strength ofA286 Superalloy with Different Ti / Al Ratios, Volume 121, Issue 3, Pages 284-290, 2020), Seifollahi et al studied the performance of Ti / Al ratio on GH2132 alloy Although the composition range of individual elements is within the range specified by the national standard, there are significant differences in the properties of alloys with different Ti / Al ratios. The inaccurate range of elements leads to a decline in alloy properties. When the Ti / Al ratio is 3, the yield strength of the alloy is only About 966MPa; when the Ti / Al ratio is 10, the yield strength can reach about 1000MPa
This shows that even if the composition standards widely accepted in the industry are followed, the performance of the alloy will vary greatly, and the comprehensive performance cannot be guaranteed.
In actual industrial production, various enterprises usually manufacture alloys according to empirical components, coupled with the complexity of the preparation process, it is often impossible to obtain alloys with excellent properties

Method used

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  • GH2132 high-temperature alloy based on component collaborative change relation and preparation method
  • GH2132 high-temperature alloy based on component collaborative change relation and preparation method

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: the mass percent of alloy is:

[0025] Fe-23.51Ni-1.36Mn-14.30Cr-1.19Mo-0.32V-0.17Si-2.09Ti-0.17Al-0.05C (wt.%).

[0026] Step 1: Alloy Preparation

[0027] 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. Afterwards, solid solution treatment at 1080° C. for 2 hours, water cooling to room temperature, heat preservation at 720° C. for 16 hours, and water cooling to room temperature can obtain the aging state allo...

Embodiment 2

[0030] Embodiment 2: the mass percent of alloy is:

[0031] Fe-27.06Ni-1.03Mn-14.30Cr-1.19Mo-0.32V-0.17Si-2.09Ti-0.17Al-0.05C-0.003S-0.003P (wt.%).

[0032] Step 1: Alloy Preparation

[0033] 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. Afterwards, solid solution treatment at 1080° C. for 2 hours, water cooling to room temperature, heat preservation at 720° C. for 16 hours, and water cooling to room temperature can obtain the ag...

Embodiment 3

[0036] Embodiment 3: the mass percent of alloy is:

[0037] Fe-23.51Ni-1.36Mn-16.10Cr-1.19Mo-0.32V-2.09Ti-0.34Al-0.05C-0.003P-0.003B (wt.%).

[0038] Step 1: Alloy Preparation

[0039] 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. Afterwards, solid solution treatment at 1070°C for 2 hours, water cooling to room temperature, heat preservation at 710°C for 16 hours, and water cooling to room temperature can obtain the aging state a...

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Abstract

The invention discloses a GH2132 high-temperature alloy based on a component collaborative change relation and a preparation method, and belongs to the field of high-temperature alloys. The method comprises the following steps: dividing a GH2132 high-temperature alloying element into a matrix Fe element entering a cluster type; ni-like elements for stabilizing austenite, wherein the Ni-like elements contain Ni and Mn; cr-like elements for stabilizing ferrite contain Cr, Mo, V, Si, Ti and Al, wherein Ti and Al belong to precipitated elements; the trace elements do not enter the cluster type and contain C, P, S and B; and the collaborative change relationship of each element is relimited. The synergistic change relation of the new components is simple and effective, the component standardization mode of the alloy is thoroughly reformed, and development and progress of the alloy are promoted.

Description

technical field [0001] The invention belongs to the field of high-temperature alloys, in particular to a GH2132 high-temperature alloy based on the synergistic change relationship of components and a corresponding preparation process. 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 matrix structure is a single austenite, which has high high temperature strength, oxidation resistance and corrosion resistance, and good structural stability. It is often called a superalloy abroad. Compared with nickel-based and cobalt-based superalloys, iron-based superalloys greatly reduce production costs and have excellent high-temperature performance. As a representative alloy of iron-based superalloys, GH2132 superalloys are the most widely used deformed superalloys. However, its alloying is complicated, and the properties of the alloy are sensitive to the compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C21D6/00C22C33/04C22C38/02C22C38/04C22C38/44C22C38/46C22C38/50C22C38/54
CPCC22C38/58C22C38/04C22C38/44C22C38/46C22C38/50C22C38/02C22C38/54C22C33/04C21D6/005C21D6/004C21D6/008
Inventor 李陌李言成王清董闯赵亚军邹存磊张爽
Owner DALIAN UNIV OF TECH
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