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Ti-Al-V-Zr high-temperature-resistant high-strength high-toughness titanium alloy with good additive manufacturing forming performance and application thereof

A ti-al-v-zr, additive manufacturing technology, applied in the field of metal additive manufacturing, can solve the problems of low high temperature strength, poor forming performance of additive manufacturing, complex composition, etc., and achieve high temperature strength and toughness improvement, good additive manufacturing The formability of material manufacturing and the effect of ensuring the thermal stability of the melt

Active Publication Date: 2021-06-25
DALIAN UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of existing high-temperature titanium alloy materials with complex components, low high-temperature strength, and poor formability of additive manufacturing, and designs and develops a Ti-Al-V-Zr with good additive manufacturing formability. High temperature resistant high strength and toughness titanium alloy

Method used

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  • Ti-Al-V-Zr high-temperature-resistant high-strength high-toughness titanium alloy with good additive manufacturing forming performance and application thereof
  • Ti-Al-V-Zr high-temperature-resistant high-strength high-toughness titanium alloy with good additive manufacturing forming performance and application thereof
  • Ti-Al-V-Zr high-temperature-resistant high-strength high-toughness titanium alloy with good additive manufacturing forming performance and application thereof

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Embodiment 1

[0021] Embodiment 1 is a Ti-Al-V-Zr high-temperature-resistant high-strength and tough titanium alloy with good additive manufacturing forming properties, specifically carried out according to the following steps:

[0022] 1. Composition design and preparation of Ti-Al-V-Zr high-temperature-resistant high-strength and tough titanium alloy: design model according to cluster alloy composition 15 [Al-Ti 12 ] (AlTi 2 )+2[Al-Ti 12 Zr 2 ](V 3 ), and the atomic percentage of the titanium alloy composition is obtained as Ti 84.8 Al 11.5 V 2.1 Zr 1.4 (at.%), change the element from atomic percentage to mass percentage Ti 87.9 Al 6.8 V 2.4 Zr 2.9 (wt.%) for component distribution, then ball milling at room temperature for powder mixing, then heating in a vacuum heat treatment furnace to a temperature of 120°C for drying treatment for 8 hours, and cooling in the furnace to room temperature to obtain prefabricated dry mixed powder;

[0023] 2. Laser processing: put the prefabri...

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Abstract

The invention discloses a Ti-Al-V-Zr high-temperature-resistant high-strength high-toughness titanium alloy with a good additive manufacturing forming performance and application thereof, and belongs to the technical field of metal additive manufacturing. Components of the Ti-Al-V-Zr titanium alloy are derived from a cluster alloy component design model; the Ti-Al-V-Zr titanium alloy comprises the following alloy components in atomic percent (at.%): 10.0 to 12.5 at. percent of Al, 1.5 to 2.2 at. percent of V, 1.2 to 3.5 at. percent of Zr, impurity elements with the total amount being controlled within 0.5 at. percent, and the balance Ti; and the atomic percentage ratio of Al to (V + Zr) is 4: (1-2). According to the Ti-Al-V-Zr high-temperature-resistant high-strength high-toughness titanium alloy with the good additive manufacturing forming performance and the application thereof provided by the invention, the strength and the toughness of the titanium alloy at the high temperature of 600 DEG C are synchronously improved through the alloy component design, and the main alloying element of the alloy is the Zr element which is used for refining the alpha phase to improve the strength, coarsening the beta phase to improve the plasticity, enhancing the thermal stability of a melt and improving the temperature bearing capacity, so that the Ti-Al-V-Zr high-temperature-resistant high-strength high-toughness titanium alloy with the good additive manufacturing forming performance can be used for additive manufacturing forming.

Description

technical field [0001] The invention relates to a Ti-Al-V-Zr high-temperature-resistant high-strength and tough titanium alloy with good additive manufacturing forming performance, belonging to the technical field of metal additive manufacturing. Background technique [0002] The rapid development of the aerospace industry urgently requires the development of lightweight, high-strength and high-temperature-resistant engineering structural materials. Titanium alloy can be used as one of the preferred aerospace materials because of its low density, high specific strength, high weldability, and low thermal conductivity. Compared with the traditional material preparation process, additive manufacturing is a new intelligent manufacturing process that uses high-energy beam particle flow as the heat source to accumulate materials point by point or layer by layer to form three-dimensional solid parts. It has the advantages of small machining margin and high material utilization rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00B33Y70/00B33Y10/00B33Y80/00B33Y50/00B22F10/22B22F10/80
CPCC22C14/00B33Y70/00B33Y10/00B33Y80/00B33Y50/00B22F3/115
Inventor 朱智浩董闯刘田雨王清
Owner DALIAN UNIV OF TECH
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