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Al-Re-Nb ternary alloy simultaneously containing high-melting-point and low-boiling-point elements and preparation method thereof

A ternary alloy and high melting point metal technology, applied in the field of Al-Re-Nb ternary alloy and its preparation, can solve the problems of unseen and Al element melting loss, etc., to reduce volatilization, reduce melting loss, chemical composition stable effect

Active Publication Date: 2021-04-06
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The melting point of metal Re is 3180°C, the boiling point of metal Al is 2467°C, and the boiling point of metal Al is much lower than the melting point of metal Re, so the traditional preparation method leads to serious melting loss of Al element in the alloy, which restricts Al-Re-Nb The key factor for the preparation of ternary and even higher elemental alloys, so there has been no report on the phase relationship of Al-Re-Nb multi-component systems

Method used

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  • Al-Re-Nb ternary alloy simultaneously containing high-melting-point and low-boiling-point elements and preparation method thereof
  • Al-Re-Nb ternary alloy simultaneously containing high-melting-point and low-boiling-point elements and preparation method thereof
  • Al-Re-Nb ternary alloy simultaneously containing high-melting-point and low-boiling-point elements and preparation method thereof

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Effect test

Embodiment 1

[0020] The Al-Re-Nb ternary alloy containing high melting point and low boiling point elements prepared by the present invention has the following components in terms of mass percentage: Al 40%, Re 35%, and the balance is Nb.

[0021] The preparation method of described Al-Re-Nb ternary alloy, its steps are as follows:

[0022] Material selection: select Al, Re, Nb three pure metal raw materials with a purity of 99.99%; Al and Re are particles with a particle size of about 2mm, and Nb is a thin sheet with a thickness of about 0.5mm.

[0023] Raw material processing and batching: put the above metal raw materials into acetone solution for ultrasonic cleaning for 15 minutes, take them out and put them in alcohol for ultrasonic cleaning for 15 minutes, and use a hair dryer to dry them immediately after cleaning. The dried raw materials are weighed according to the above mass percentages on an electronic balance with an accuracy of 0.0001.

[0024] Charging: place all the Al part...

Embodiment 2

[0027] The Al-Re-Nb ternary alloy containing high melting point and low boiling point elements prepared by the present invention has the following composition in terms of mass percentage: Al 28%, Re 40%, and the balance is Nb.

[0028] The preparation method of described Al-Re-Nb ternary alloy, its steps are as follows:

[0029] Material selection: select Al, Re, Nb three pure metal raw materials with a purity of 99.99%; Al and Re are particles with a particle size of about 2mm, and Nb is a thin sheet with a thickness of about 0.5mm.

[0030] Raw material processing and batching: put the above metal raw materials into acetone solution for ultrasonic cleaning for 15 minutes, take them out and put them in alcohol for ultrasonic cleaning for 15 minutes, and use a hair dryer to dry them immediately after cleaning. The dried raw materials are weighed according to the above mass percentages on an electronic balance with an accuracy of 0.0001.

[0031] Charging: place all the Al par...

Embodiment 3

[0034] The Al-Re-Nb ternary alloy containing high melting point and low boiling point elements prepared by the present invention has the following composition in terms of mass percentage: 20% Al, 50% Re, and Nb as the balance.

[0035] The preparation method of described Al-Re-Nb ternary alloy, its steps are as follows:

[0036] Material selection: select Al, Re, Nb three pure metal raw materials with a purity of 99.99%; Al and Re are particles with a particle size of about 2mm, and Nb is a thin sheet with a thickness of about 0.5mm.

[0037] Raw material processing and batching: put the above metal raw materials into acetone solution for ultrasonic cleaning for 15 minutes, take them out and put them in alcohol for ultrasonic cleaning for 15 minutes, and use a hair dryer to dry them immediately after cleaning. The dried raw materials are weighed according to the above mass percentages on an electronic balance with an accuracy of 0.0001.

[0038] Charging: place all the Al par...

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Abstract

The invention discloses an Al-Re-Nb ternary alloy simultaneously containing high-melting-point and low-boiling-point elements and a preparation method thereof. The melting point of an Re element is 3180 DEG C, the melting point of an Nb element is 2467 DEG C, and the boiling point of an Al element is 2467 DEG C. The Al, Re and Nb elements with the purity of 99.99% are adopted to be smelted into the Al-Re-Nb ternary alloy. According to the Al-Re-Nb ternary alloy simultaneously containing the high-melting-point and low-boiling-point elements and the preparation method thereof, the alloy preparation process is simple and convenient, the price is low, the melting loss amount of the alloy prepared through the method is greatly reduced, the actual density of the obtained alloy is close to the theoretical density, and the melting loss rate of the alloy is smaller than 1.9%.

Description

technical field [0001] The invention relates to a high-temperature alloy preparation technology, in particular to an Al-Re-Nb ternary alloy containing elements with a high melting point and a low boiling point and a preparation method thereof. Background technique [0002] Nickel-based superalloys have high temperature bearing capacity, good creep properties and excellent structural stability, and have become the main materials for many advanced aero-engine turbine blades. Adding refractory elements is an effective way to improve the temperature bearing capacity of turbine blades, but the addition of refractory elements Re, W, Co, Cr, Mo, especially Re, will cause the precipitation of TCP phase in nickel-based superalloys, and accelerate the formation and propagation of cracks . Metal Al has strong high-temperature oxidation resistance. With the increase of aluminum content, the durability strength and tensile strength of nickel-based superalloys increase, but the cold and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C27/00C22C1/02
CPCC22C1/02C22C27/00C22C30/00
Inventor 赵满秀王亚肖尹付成唐涛涛王琪琛
Owner XIANGTAN UNIV
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