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A ti-al-v-zr high temperature resistant, high strength and tough titanium alloy with good additive manufacturing formability and its application

A technology of ti-al-v-zr and tough titanium alloy, which is applied in the direction of additive manufacturing and additive processing, can solve the problems of poor formability, low high-temperature strength, and complex composition of additive manufacturing, and achieve high-temperature strength and toughness improvement , good additive manufacturing formability, and the effect of ensuring the thermal stability of the melt

Active Publication Date: 2022-02-18
DALIAN UNIV OF TECH
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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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  • A ti-al-v-zr high temperature resistant, high strength and tough titanium alloy with good additive manufacturing formability and its application
  • A ti-al-v-zr high temperature resistant, high strength and tough titanium alloy with good additive manufacturing formability and its application
  • A ti-al-v-zr high temperature resistant, high strength and tough titanium alloy with good additive manufacturing formability and its application

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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

A Ti-Al-V-Zr high-temperature-resistant high-strength and tough titanium alloy with good additive manufacturing forming performance and its application belong to the technical field of metal additive manufacturing. The composition of Ti-Al-V-Zr titanium alloy is derived from the cluster alloy composition design model, and the atomic percentage (at.%) of the alloy composition is Al: 10.0-12.5, V: 1.5-2.2, Zr: 1.2-3.5, The total amount of impurity elements is controlled within 0.5 at.%, and the rest is Ti; and the atomic percentage ratio of Al / (V+Zr) is 4:1-2. The invention realizes simultaneous improvement of the high-temperature strength and toughness of the titanium alloy at 600°C through alloy composition design. The main alloying element of the alloy is Zr element, which is used to refine the α phase to improve the strength, coarsen the β phase to improve the plasticity, and enhance the thermal stability of the melt. , improve the temperature bearing capacity, and 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 Patents(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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