TiZrNbMoxHfy multi-principal component high temperature alloy and preparation method thereof

Abstract

The invention discloses a TiZrNbMoxHfy multi-principal component high temperature alloy and a preparation method thereof, and relates to the development and the preparation of a novel multi-principal component high temperature alloy material. The alloy comprises the components of TiZrNbMoxHfy, wherein x and y are corresponding element mol ratios. The preparation method of the alloy comprises the following steps: the raw materials of Ti, Zr, Nb, Mo and Hf are cleaned, are precisely weighed, and are smelted in a nonconsumable vacuum arc furnace; and each alloy is smelted for five times to guarantee the component uniformity of the alloy. The multi-principal component high temperature alloy forms a body-centered cubic solid solution structure, has higher hardness and compression strength under room temperature, and has excellent plasticity and toughness. The multi-principal component high temperature alloy still can keep higher compression strength under high temperature, and has excellent application prospect under high temperature.

Description

technical field [0001] The invention relates to the field of metal materials and their preparation, and provides a novel TiZrNbMo x f y A multi-principal superalloy and a preparation method thereof, the multi-principal alloy will have good application prospects at high temperatures. Background technique [0002] The traditional alloy design is based on one or two elements, and a small amount of other elements are added to improve the structure and performance of the alloy. However, this traditional method of alloy design limits the development of alloy systems. In 2004, Taiwanese scholar Ye Junweifeng first proposed the design concept of multi-principal alloys, and defined multi-principal alloys as containing five or more alloying elements, and the atomic percentage of each element is between 5% and 35%. The proposal of multi-principal alloys provides a broad idea for the development of new alloy systems. [0003] The characteristics of using multiple elements as the mai...

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Problems solved by technology

Therefore, in Lin Lirong's master's thesis, the ratio of TiZrNbMoHf alloy used is equal, and Mo and Hf elements are very expensive elements. How to save costs without reducing the properties of the above alloys? , and even improved, the paper did not give corresponding instructions or technical inspiration

[0008] In addition, on February 26, 2014, the publication number is: CN103602872A, and the name is: a TiZrNbVMo x High-entropy alloy and its preparation method, although a high-entropy alloy composition is given, but it does not involve the alloy system of Hf element, and what changes occur in the corresponding structure and performance when Hf is added or not added, whether can achieve the desired goal, which does not give

Moreover, it does not give the proportion of reducing Mo, what kind of changes will be made in the structure and properties of the alloy, and it does not give an explanation

[0009] At the same time, it was disclosed on February 26, 2014, the publication number is: CN103602874A, the name is: the name is: high-strength low elastic modulus TiZrNbHf high-entropy alloy and its preparation method, although the high-entropy alloy containing Hf element is given , but the amount of added Hf element and other elements is equal, and the ratio of reducing Hf element is not given, what kind of properties will be produced, and what kind of changes will be made in the alloy structure

At the same time, it does not involve the changes in the structure and properties of the alloy composed of Hf elements and Mo elements.

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