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Preparing method of high impact toughness TA24 alloy board

A technology of TA24 and alloy sheet, applied in the field of preparation of TA24 alloy sheet, can solve the problem of insufficient impact toughness of TA24 alloy sheet, achieve uniform structure, high impact toughness, strong plasticity and matching, and meet application requirements.

Active Publication Date: 2018-12-07
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem of insufficient impact toughness of TA24 alloy plates in the prior art, the present invention proposes a method for preparing TA24 alloy plates with high impact toughness. The TA24 alloy plates prepared by this method have good impact toughness and are especially suitable for shipbuilding Use of impact-resistant equipment such as

Method used

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  • Preparing method of high impact toughness TA24 alloy board
  • Preparing method of high impact toughness TA24 alloy board
  • Preparing method of high impact toughness TA24 alloy board

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preparation example Construction

[0017] The preparation method of the described high impact toughness TA24 alloy plate, its technical solution is to include the following steps:

[0018] The first step, the ingot smelting link: select zero-grade small particle sponge titanium, sponge zirconium, aluminum-molybdenum alloy, aluminum beans, pure iron and titanium dioxide powder to prepare electrode blocks according to the ratio, and use a vacuum consumable electric arc furnace for 2 to 3 The second smelting is made into ingots for use, and the phase transition point value T is measured by metallographic method β ;

[0019] The second step, the slab forging link: the ingot to be used obtained in the ingot smelting link is obtained at the phase transformation point value T β Above and in the range of 1050 ~ 1150 ℃, it has been forged in a single-phase zone with at least one fire time or more, and each fire time is subjected to two or more times of upsetting, and the fire time deformation is 55 ~ 80%, so as to full...

Embodiment 1

[0027] The first step, the ingot smelting link: select zero-grade small particle sponge titanium, sponge zirconium, aluminum-molybdenum alloy, aluminum beans, pure iron and titanium dioxide powder to prepare electrode blocks according to the ratio, and use vacuum consumable electric arc furnace for 3 times of melting Make a Φ440mm ingot for use, and measure the phase transition point T by metallographic method β is 950°C.

[0028] The second step, the slab forging link: the ingot to be used obtained from the ingot smelting link has a temperature of 1150°C in the first fire, and the deformation amount is 75% after two piers and two drawing fires, and the forging temperature in the second fire is 1050°C. Two piers and two pulls, the deformation of the first fire is 70%; the third fire is changed to forging at 920°C, and the deformation of the first fire is 68% after one upsetting and drawing, and then it is shaped and milled to become a 130mm thick square slab for rolling.

[0...

Embodiment 2

[0033] The first step, the ingot smelting link: select zero-grade small particle sponge titanium, sponge zirconium, aluminum-molybdenum alloy, aluminum beans, pure iron and titanium dioxide powder to prepare electrode blocks according to the ratio, and use vacuum consumable electric arc furnace for 3 times of melting A ready-to-use ingot of Φ440mm is made, and the phase transition point measured by the metallographic method is 960°C.

[0034] The second step, the slab forging link: the ingot to be used obtained from the ingot smelting link has a temperature of 1150°C in the first fire, and the deformation amount is 76% after two piers and two pullouts, and the forging temperature in the second fire is 1050°C. Two piers and two pulls, the heat deformation is 68%; the three fires are changed to forging at 930°C, after one upsetting and drawing, the heat deformation is 65%, and then after shaping and face milling, it becomes a 130mm thick square slab for rolling.

[0035] The thi...

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Abstract

The invention provides a preparing method of a high impact toughness TA24 alloy board. The problem that in the prior art, a TA24 alloy board is insufficient in impact toughness is solved. According tothe preparing method, through an ingot casting smelting link, the board forging link, the rolling link, the heat treatment link and the surface treatment link, the finished product board is obtained.According to the board forging link, an ingot casting to be used is subject to single-phase-area forging with at least one heating number at the temperature of 1050 to 1150 DEG C, substituting forging is carried out within the temperature range being Tbeata-60 DEG C to Tbeata-20 DEG C, a large casting structure in the square board can be sufficiently broken, and the obtained TA24 alloy board is uniform in structure, has the high impact toughness, and strong plasticity and matching, and meets the ship engineering applying needs.

Description

technical field [0001] The invention relates to the field of preparation of TA24 alloy plates, in particular to a preparation method of TA24 alloy plates. The TA24 alloy plates obtained by the method all have high impact toughness. Background technique [0002] The TA24 alloy is a near-alpha alloy with a nominal composition of Ti-3Al-2Mo-2Zr. It is a 730MPa-level medium-strength titanium alloy designed and developed by my country. It has good corrosion resistance, weldability and easy forming, and is widely used. For ship welding structural parts. Since ships have to continuously withstand various impacts such as seawater, ice floes, and wind and waves during their service, ship materials must have sufficiently high impact toughness. At present, the impact toughness of titanium alloys used in marine engineering is generally low, such as the TA24 alloy involved in the present invention, the impact toughness of alloy plates produced by conventional processes is about 58J / cm 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22F1/18C22C14/00
CPCC22C1/03C22C14/00C22F1/183
Inventor 郝晓博张强陶会发
Owner LUOYANG SUNRUI TI PRECISION CASTING
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