Preparation process of high-performance low-cost titanium alloy

A preparation technology, titanium alloy technology, applied in the field of high-performance and low-cost titanium alloy preparation technology, can solve the problems of uncommon application of titanium alloy, insufficient application accumulation, and insufficient strength, etc., to achieve alloy cost reduction, simple process, and reduced forging The effect of fire times

Inactive Publication Date: 2019-11-22
LUOYANG SUNRUI TI PRECISION CASTING
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to reduce the weight of tanks and replace steel armor materials, there is a demand for high-performance and low-cost titanium alloys in the armor field, requiring titanium alloys to have strength ≥ 1050 MPa, elongation ≥ 10%, and good comprehensive performance. In addition, the application of titanium alloys for armor is not yet Generally, in addition to insufficient application accumulation and insufficient strength, high cost is also an important reason for restricting applications. Therefore, low cost should also be considered when developing high-performance titanium alloys.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation process of high-performance low-cost titanium alloy
  • Preparation process of high-performance low-cost titanium alloy
  • Preparation process of high-performance low-cost titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A preparation process of a high-performance low-cost titanium alloy, the specific preparation steps are as follows:

[0032] Step 1. Put a small amount of sponge Ti on the bottom and cap, and spread a layer of sponge Ti, recycled materials, intermediate alloy mixture, Al bean and Cr mixture, repeat the above laying 3~4 times, and extrude into an electrode block after the ingredients are completed. ;

[0033] Step 2: Melt the electrode block twice, weld the ingot head-to-tail for the first smelting, and put it in an oven for drying. After smelting the ingot for the second smelting flaw detection, wire cutting removes the shrinkage cavity at the arc-receiving end, and peels off the skin on both ends and sides to obtain Blank;

[0034] Step 3, the billet in step 2 is sequentially subjected to no less than 3 times of forging and 3 to 4 times of rolling to obtain a titanium alloy plate blank;

[0035] Step 4: Cut the titanium alloy plate billet into the required size and a...

Embodiment 1

[0046]Select O-grade sponge Ti, 20% TA5 sheet material, Cr50Fe, Mo50Fe, Cr and Al beans to press electrodes, and use German ALD vacuum consumable electric arc furnace for two smelting, the diameter of the first casting ingot is 220mm, and the second casting The diameter of the ingot is 290 mm. In the present invention, the composition of the ingot is Ti-8.2Al-1.4Cr-0.95Fe-0.86Mo. After 3 times of forging and face milling, the flaw detection grade A is obtained, and the low-magnification structure is fuzzy crystal. Titanium alloy slab, the size of the slab is 90×950×1200mm.

[0047] According to the test of DSC thermal analyzer, the phase transition point of Ti-8.2Al-1.4Cr-0.95Fe-0.86Mo alloy is 1012°C, the first-fire rolling temperature is 1025°C, the first-fire rolling thickness is 17mm, and the deformation rate is 82%. , peeling and polishing after rolling to remove superficial crack defects on the surface; second-fire rolling thickness 7mm, deformation rate 59%, polishing a...

Embodiment 2

[0052] The alloy ingot was prepared by the method of Example 1, and O-grade sponge titanium, 30% TA1 sheet material, Cr50Fe, Mo50Fe, Cr and Al beans were used to press electrodes, and the German ALD vacuum consumable electric arc furnace was used for two smelting. The diameter of the primary ingot is 220mm, and the diameter of the second ingot is 290mm. The composition of the ingot is Ti-8.1Al-1.2Cr-1.05Fe-0.91Mo, and the O content is 0.1%. After 3 times of forging and milling, it is obtained Flaw detection grade A grade, alloy slab with fuzzy grain in low-magnification structure, the size of the slab is 90×950×1200mm.

[0053] According to the test of DSC thermal analyzer, the phase transition point of Ti-8.1Al-1.2Cr-1.05Fe-0.91Mo alloy is 1010°C, the first-fire rolling temperature is 1025°C, the first-fire rolling thickness is 17mm, and the deformation rate is 82%. Peeling and polishing after rolling to remove superficial crack defects on the surface; second-fire rolling thi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation process of a high-performance low-cost titanium alloy. The preparation process comprises the following steps: carrying out bottoming and sealing on a small amount of sponge Ti, laying a layer of sponge Ti, recycled materials, intermediate alloy mixture, Al beans and Cr mixture, and extruding the mixture into an electrode block after repeating the laying for 3-4 times; smelting the electrode block twice, and peeling off the two end surfaces and the side surface after smelting to obtain a blank; sequentially carrying out no less than three heating times offorging and 3-4 heating times of rolling on the blank to obtain a titanium alloy semi-finished product; cutting the titanium alloy semi-finished product into the titanium alloy semi-finished product with required size and then carrying out annealing; and screening alloy titanium plates with qualified performance, and carrying out surface repair treatment to obtain the titanium alloy plates. The process is simple, large-batch stable production can be realized, and the comprehensive performance of the prepared titanium alloy plates is good; and through rolling and annealing, the tensile strengthis larger than or equal to 1050 MPa, the yield strength is 1000-1150 MPa, and the elongation rate is larger than or equal to 10%.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy plate preparation, and in particular relates to a high-performance and low-cost titanium alloy preparation process. Background technique [0002] Lightweight composite armor has been researched and applied since the 1960s. While maintaining the ballistic performance of composite armor and slightly improving the ability to resist multiple projectile attacks, try to use light backboard materials to greatly reduce the armor system. the weight of. The armor of light combat vehicles has always been limited by the vehicle's weight, and as militaries increasingly rely on these vehicles, the problem of armor protection has become more and more prominent. Armor material that increases vehicle weight. [0003] Titanium alloy has the advantages of high specific strength, non-magnetic, corrosion resistance and good dynamic performance. It is used in armored chariots, which can greatly reduce the weig...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C14/00C22C1/03C22F1/18
CPCC22C1/03C22C14/00C22F1/183
Inventor 刘喜波李洋刘茵琪
Owner LUOYANG SUNRUI TI PRECISION CASTING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap