Co-bonded TiZrNbMoTa refractory high-entropy alloy and preparation method thereof

Abstract

The invention discloses a TiZrNbMoTa refractory high-entropy alloy with Co as a binder and a preparation method thereof, and belongs to the technical field of alloy materials. The preparation method comprises the following steps that high-melting-point metal elements Ti, Zr, Nb, Mo and Ta are adopted as raw materials, and high-entropy alloy powder is prepared through mechanical alloying; and the high-entropy alloy powder and Co powder are evenly mixed and then subjected to spark plasma sintering, and block alloy materials are obtained. The Co-bonded TiZrNbMoTa refractory high-entropy alloy hasthe advantages that the grain size is small, the compactness is high, meanwhile, the components of the alloy are evenly distributed, the performance is good, and therefore the Co-bonded TiZrNbMoTa refractory high-entropy alloy has good application prospects.

Description

technical field

[0001] The invention relates to the technical field of alloy materials, in particular to a Co-bonded TiZrNbMoTa refractory high-entropy alloy and a preparation method thereof. Background technique

[0002] With the rapid development of science and technology and modern industry, more and more equipment and equipment need to operate for a long time in harsh high-temperature environments, thus putting forward higher requirements for the high-temperature performance of their constituent materials. Superalloys are an important material widely used in aviation, aerospace, petroleum, chemical industry, and ships. However, the service temperature of iron-based superalloys can only reach 750-780°C. For heat-resistant parts used at higher temperatures, nickel-based superalloys and refractory metal-based alloys are used. Refractory metals usually refer to tungsten, molybdenum, niobium, tantalum, vanadium, zirconium, etc., which have excellent properties such as high m...

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