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A high-strength nickel-niobium alloy material reinforced by scandium and tantalum

A nickel-niobium alloy and high-strength technology, which is applied in the field of nickel-niobium alloy materials, can solve the problem that the high temperature strength is not very obvious, and achieve the effects of good room temperature and high temperature mechanical properties, good plastic toughness, and enhanced alloy strength.

Inactive Publication Date: 2015-11-25
韶关市辰盛工业材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, with Ni powder, Nb powder, carbon black and A1 powder as raw materials, the nickel-niobium-based composite material is prepared. The strength of the nickel-niobium alloy is significantly improved due to the addition of composite ceramics. After HIP treatment, its strength has been improved. Further improvement, but the increase in high temperature strength is not very obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The high-strength nickel-niobium alloy material contains the following components in weight percentage: 6.0% of Nb, 2.0% of Sc, 1.0% of C, 2.0% of Ta, 2.0% of Al, 0.8% of La, 1% of Pr, The balance is nickel and unavoidable impurities. First, weigh the corresponding amount of nickel powder, niobium powder, aluminum powder, graphite powder, scandium powder, tantalum powder, lanthanum powder and praseodymium powder according to the weight percentage, and carry out batching, and the powder particle size of each component is: nickel 400 mesh powder, 400 mesh niobium powder, 400 mesh aluminum powder, 2000 mesh graphite powder, 600 mesh scandium powder, 400 mesh tantalum powder, 500 mesh lanthanum powder, and 500 mesh praseodymium powder. Put the powder and stainless steel balls obtained after the batching into the mixing tank according to the ball-to-material ratio of 5:1, and mix them on a mixer with a rotating speed of 250r / min. The mixing time is 4 hours, and the mixed mix...

Embodiment 2

[0023] The high-strength nickel-niobium alloy material contains the following components in weight percentage: 10.0% of Nb, 4.0% of Sc, 1.0% of C, 2.0% of Ta, 1.0% of Al, 0.5% of La, 1% of Pr, The balance is nickel and unavoidable impurities. First, weigh the corresponding amount of nickel powder, niobium powder, aluminum powder, graphite powder, scandium powder, tantalum powder, lanthanum powder and praseodymium powder according to the weight percentage, and carry out batching, and the powder particle size of each component is: nickel 500 mesh powder, 600 mesh niobium powder, 400 mesh aluminum powder, 1000 mesh graphite powder, 600 mesh scandium powder, 400 mesh tantalum powder, 500 mesh lanthanum powder, and 400 mesh praseodymium powder. Put the powder and stainless steel balls obtained after the batching into the mixing tank according to the ball-to-material ratio of 10:1, and mix them on a mixer with a rotating speed of 300r / min. The mixing time is 6 hours, and the mixed m...

Embodiment 3

[0025] The high-strength nickel-niobium alloy material contains the following components in weight percentage: 8.0% Nb, 3.0% Sc, 0.5% C, 3.0% Ta, 1.5% Al, 1% La, 0.5% Pr, The balance is nickel and unavoidable impurities. First, weigh the corresponding amount of nickel powder, niobium powder, aluminum powder, graphite powder, scandium powder, tantalum powder, lanthanum powder and praseodymium powder according to the weight percentage, and carry out batching, and the powder particle size of each component is: nickel 500 mesh powder, 500 mesh niobium powder, 600 mesh aluminum powder, 1000 mesh graphite powder, 500 mesh scandium powder, 500 mesh tantalum powder, 300 mesh lanthanum powder, and 300 mesh praseodymium powder. Put the powder and stainless steel balls obtained after the batching into the mixing tank according to the ball-to-material ratio of 8:1, and mix them on a mixer with a rotating speed of 200r / min. The mixing time is 5 hours, and the mixed mixture is obtained. po...

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PUM

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Abstract

A provided scandium-tantalum reinforced high-strength nickel-niobium alloy material is prepared by employing steps of material preparing, material mixing, compaction, hot-pressing sintering. According to the new thinking of introducing scandium and tantalum into the alloy as beneficial alloying elements, and also due to the fact that niobium element helps to reduce the aluminium content in the alloy, the alloy is guaranteed to have good plasticity and toughness; by employing the hot-pressing sintering means, the low-cost high-strength alloy material with high strength and high wear resistance is obtained; and by adding lanthanum and praseodymium, the alloy structure is refined, the alloy strength is further enhanced, and the alloy keeps good room-temperature mechanical properties and high-temperature mechanical properties.

Description

technical field [0001] The invention relates to the field of nickel-niobium alloy materials, in particular to a high-strength nickel-niobium alloy material. Background technique [0002] In the development process of aviation and aerospace industry, the development of advanced materials is crucial to the progress of aviation and aerospace technology. Based on the need to save energy and reduce pollution, aviation and aerospace structural materials are required not only to withstand high temperatures but also to have high specific strength and high specific stiffness. Nickel-niobium alloy is regarded as a One of the potential candidate materials for high-temperature lightweight alloys. However, the poor room-temperature plasticity and high-temperature strength of nickel-niobium alloys limit their wide application. At present, there are many methods for synthesizing and preparing nickel-niobium intermetallic compounds and their alloys, such as alloy melting method, plasma s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/03C22C1/04B22F1/00
Inventor 叶绿均
Owner 韶关市辰盛工业材料有限公司