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Nickel-based high-temperature alloy and preparing method thereof

A nickel-based superalloy and superalloy technology, applied in the field of additive manufacturing, can solve the problem that the alloy performance is difficult to meet higher temperature and new demand requirements, and achieve the effect of high strength, low density and low raw material cost

Pending Publication Date: 2019-11-19
飞而康快速制造科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The types of superalloys currently used in SLM technology are mainly concentrated on solid-solution superalloys. Although these alloys have good high-temperature performance, the performance of the alloy has been difficult to meet higher temperature and new requirements.

Method used

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  • Nickel-based high-temperature alloy and preparing method thereof
  • Nickel-based high-temperature alloy and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050]Firstly, superalloy powder was prepared by vacuum induction melting gas atomization method. The composition of alloy powder is shown in Table 1.

[0051] Then sieve the superalloy powder, and select the powder with a particle size of 15 μm-45 μm.

[0052] The selected powder is manufactured and shaped by laser selective melting technology to obtain the blank alloy.

[0053] The nickel-based superalloy is obtained after solid solution and aging treatment of the blank alloy.

[0054] The temperature of solution treatment is 1100°C, and the time is 2h; the temperature of aging treatment is 900°C, and the time is 3h.

[0055] The density and tensile strength at 900°C of the prepared nickel-based superalloy were tested, and the results are shown in Table 2.

Embodiment 2

[0057] Firstly, superalloy powder was prepared by vacuum induction melting gas atomization method. The composition of alloy powder is shown in Table 1.

[0058] Then sieve the superalloy powder, and select the powder with a particle size of 20 μm-35 μm.

[0059] The selected powder is manufactured and shaped by laser selective melting technology to obtain the blank alloy.

[0060] The nickel-based superalloy is obtained after solid solution and aging treatment of the blank alloy.

[0061] The temperature of solution treatment is 1175°C, and the time is 1h; the temperature of aging treatment is 900°C, and the time is 3h.

[0062] The density and tensile strength at 900°C of the prepared nickel-based superalloy were tested, and the results are shown in Table 2.

Embodiment 3

[0064] Firstly, superalloy powder was prepared by vacuum induction melting gas atomization method. The composition of alloy powder is shown in Table 1.

[0065] Then sieve the superalloy powder, and select the powder with a particle size of 30 μm-45 μm.

[0066] The selected powder is manufactured and shaped by laser selective melting technology to obtain the blank alloy.

[0067] The nickel-based superalloy is obtained after solid solution and aging treatment of the blank alloy.

[0068] The temperature of solution treatment is 1200°C, and the time is 1.5h; the temperature of aging treatment is 900°C, and the time is 3h.

[0069] The density and tensile strength at 900°C of the prepared nickel-based superalloy were tested, and the results are shown in Table 2.

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Abstract

The invention provides a nickel-based high-temperature alloy and a preparing method thereof. The alloy comprises following components including 0.05%-0.15% of C, 20.50%-23.00% of Cr, 0.50%-2.50% of Co, 8.00%-10.00% of Mo, 0.20%-1.00% of W, 17.00%-20.00% of Fe, smaller than or equal to 1.00% of Si, 0.01% of B, smaller than or equal to 1.00% of Mn, 0.60%-3.00% of Al, 1.00%-3.00% of Ti, and the balance Ni. The nickel-based high-temperature alloy combines high temperature, higher strength and higher service temperature and is applicable to the SLM technology. In addition, the advantages that density is lower, and the raw material cost is lower are achieved.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a nickel-based superalloy used in laser selective melting technology and a preparation method thereof. Background technique [0002] At present, selective laser melting technology (SLM) has been applied to a certain extent in the fields of stainless steel, titanium alloy, aluminum alloy and superalloy, showing unique technical advantages. However, compared with the traditional manufacturing process, the types of alloys available for SLM technology are less, which greatly restricts the industrial application of SLM technology. [0003] The types of superalloys currently used in SLM technology are mainly concentrated on solid-solution superalloys. Although these alloys have good high-temperature performance, the alloy performance has been difficult to meet higher temperature and new requirements. Contents of the invention [0004] Aiming at the deficiencies of t...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22F1/10C22C1/04
CPCC22C1/0433C22C19/055C22F1/10
Inventor 段修涛夏承东张小军周德敬
Owner 飞而康快速制造科技有限责任公司
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