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High-strength nickel-niobium alloy material reinforced by chromium and tantalum

A nickel-niobium alloy, high-strength technology, applied in the field of nickel-niobium alloy materials, can solve the problem of not very obvious improvement in high temperature strength, achieve good mechanical properties at room temperature and high temperature, enhance alloy strength, and overcome the effects of poor wear resistance

Active Publication Date: 2014-04-09
江苏謇公湖农业科技发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the nickel-niobium-based composite material prepared from Ni powder, Nb powder, carbon black and Al powder, the strength of the nickel-niobium alloy has been significantly improved due to the addition of composite ceramics, and its strength has been improved after HIP treatment. 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% Nb, 2.0% Cr, 1.0% C, 2.0% Ta, 2.0% Al, 0.8% Nd, 1% Pr, The balance is nickel and unavoidable impurities. First, take the corresponding amount of nickel powder, niobium powder, aluminum powder, graphite powder, chromium powder, tantalum powder, neodymium 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 chromium powder, 400 mesh tantalum powder, 500 mesh neodymium 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 mixture is obtained. pow...

Embodiment 2

[0023] The high-strength nickel-niobium alloy material contains the following components in weight percentage: 5.0% Nb, 4.0% Cr, 1.0% C, 1.0% Ta, 1.0% Al, 0.5% Nd, 1% Pr, The balance is nickel and unavoidable impurities. First, take the corresponding amount of nickel powder, niobium powder, aluminum powder, graphite powder, chromium powder, tantalum powder, neodymium 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 niobium powder, 600 mesh niobium powder, 400 mesh aluminum powder, 1000 mesh graphite powder, 600 mesh chromium powder, 400 mesh tantalum powder, 500 mesh neodymium 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 mixture is obtai...

Embodiment 3

[0025] The high-strength nickel-niobium alloy material contains the following components in weight percentage: 8.0% Nb, 3.0% Cr, 0.5% C, 3.0% Ta, 1.5% Al, 1% Nd, 0.5% Pr, The balance is nickel and unavoidable impurities. First, take the corresponding amount of nickel powder, niobium powder, aluminum powder, graphite powder, chromium powder, tantalum powder, neodymium 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 chromium powder, 500 mesh tantalum powder, 300 mesh neodymium 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. pow...

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PUM

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Abstract

The invention provides a high-strength nickel-niobium alloy material which is prepared by the steps of material proportioning, material mixing, compacting and hot pressed sintering. A new idea that tantalum and chromium as beneficial alloying elements are introduced into an alloy is provided, at the same time, niobium reduces the content of aluminum in the alloy, and the alloy is ensured to have good plasticity and toughness; through the hot pressed sintering method, the low-cost high-strength alloy material having high strength and wear resistance is obtained; and with addition of neodymium and praseodymium, the microstructure of the alloy is refined, the strength of the alloy is further reinforced, and the alloy is allowed to keep excellent room-temperature 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 Applications(China)
IPC IPC(8): C22C19/05C22C1/04
Inventor 叶绿均
Owner 江苏謇公湖农业科技发展有限责任公司