High-strength high-elasticity modulus titanium alloy

A high-elasticity, titanium alloy technology, applied in the field of titanium alloys, can solve problems such as poor deformation coordination ability, titanium alloy processing performance, and plastic index deterioration, and achieve the effect of increasing the elastic modulus

Active Publication Date: 2007-06-13
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The TiB phase exists in the form of second phase particles in titanium alloys, and it basically does not deform when subjected to external stress, and the deformation coordination ability with the matrix is ​​poor
The existence of TiB phase significantly improves the elastic modulus of titanium alloy, but at the same time deteriorates the processing performance and plasticity index of titanium alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Sponge titanium, sponge zirconium, pure aluminum, pure hafnium, aluminum vanadium master alloy, aluminum molybdenum master alloy, aluminum niobium master alloy and titanium boron master alloy according to composition Ti-4.5Al-3Zr-0.5Hf-4Mo-1V-1Nb -1.2B-0.06O ingredients are used to press electrodes, which are smelted in a shell-condensing furnace and a vacuum consumable furnace, and smelted into ingots twice. The ingot is forged and rolled to prepare a φ12 mm rod. After the bar is annealed at 850°C / 1h / AC, it is prepared into a standard tensile sample according to the national standard GB / T228-2000, and the mechanical properties are tested on a Shimadzu AG50KNE ​​universal material testing machine. The obtained tensile strength Rm, Elongation A 5 and tensile modulus E are shown in Table 1.

Embodiment 2

[0024] Sponge titanium, sponge zirconium, pure aluminum, pure iron, pure chromium, aluminum-molybdenum master alloy, aluminum-niobium master alloy and titanium-boron master alloy respectively according to composition Ti-6Al-2Mo-2Cr-2Zr-0.5Fe-0.6B-0.22 The O ingredients are pressed into the electrode, and the ingot is smelted twice in a vacuum consumable furnace. The ingot is forged and rolled to prepare a φ12 mm rod. After the bar is annealed at 850°C / 1h / AC, it is prepared into a standard tensile sample according to the national standard GB / T228-2000, and the mechanical properties are tested on a Shimadzu AG50KNE ​​universal material testing machine. The obtained tensile strength Rm, Elongation A 5 and tensile modulus E are shown in Table 1.

Embodiment 3

[0026] Sponge titanium, pure aluminum, pure chromium, aluminum-vanadium master alloy, aluminum-molybdenum master alloy and titanium-boron master alloy are respectively pressed into electrodes according to the ingredients of Ti-8Al-2Mo-2V-1Cr-0.7B-0.12O, and plasma melting and Vacuum self-consumption smelting, twice smelting into ingots. The cast ingots were slab forged and plate rolled to produce plates with a thickness of 2.0 mm. After the plate is annealed at 900°C / 1h / AC, the surface is sandblasted and pickled, prepared into a standard tensile sample according to the national standard GB / T228-2000, and tested for mechanical properties on a Shimadzu AG50KNE ​​universal material testing machine. Tensile strength Rm, elongation A 5 and tensile modulus E are shown in Table 1.

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Abstract

The invention relates to a titanium alloy which is alpha + beta two phase one. Its components are as follows: 4.5-9.0wt% aluminum, 0.2-1.5wt% boron, and 0.5-5wt% beta stable element. The titanium alloy of the invention not only has high intensity high elastic modulus, but also cannot worsen its process ability and plasticity index.

Description

technical field [0001] The invention relates to a titanium alloy, in particular to a titanium alloy with high strength and high elastic modulus. Background technique [0002] When the elastic deformation of a metal material fully satisfies Hooke's law, the ratio of its stress to strain is the modulus of elasticity. The elastic modulus is essentially a physical parameter that characterizes the bonding strength between solid atoms. The smaller the atomic radius and ionic radius, the higher the atomic valence, the greater the elastic modulus. For selected materials, the elastic modulus is tissue insensitive. [0003] Because titanium alloy has good specific strength and corrosion resistance, it has been widely used in fields such as aviation, military, space, deep sea exploration and chemical plants. The elastic modulus of titanium alloy is only about half of that of steel material, generally between 110 and 125GPa. [0004] The elastic modulus of α-type titanium alloy is hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00
Inventor 惠松骁叶文君王希哲肖今声于洋
Owner GRIMAT ENG INST CO LTD
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