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Hot working method for improving high-speed impact resistance of two-phase titanium alloy

A high-speed impact and titanium alloy technology, applied in metal processing equipment, metal rolling, manufacturing tools, etc., can solve the problems of poor high-speed impact resistance and low strength, and achieve the goal of ensuring material strength, improving strength, and ensuring high strength Effect

Active Publication Date: 2021-11-05
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing two-phase titanium alloy plate has low strength and poor high-speed impact resistance

Method used

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  • Hot working method for improving high-speed impact resistance of two-phase titanium alloy
  • Hot working method for improving high-speed impact resistance of two-phase titanium alloy
  • Hot working method for improving high-speed impact resistance of two-phase titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] a. The dimensions and specifications of titanium alloy rolling slabs for special vehicles are: thickness 111mm×width 990mm×length 1500mm, and the stepping electric heating furnace is used to heat the slab. The temperature and holding time of each section meet: the preheating section 800°C Keep warm for 20 minutes, keep warm for 15 minutes at 1050°C in the heating section, and keep warm for 80 minutes at 1050°C in the soaking section;

[0043] b. After cooling the ingredients to the rolling temperature, turn off the cooling water of the roller table and the phosphorus removal water, and quickly transfer the billet to the reversing rolling mill for reverse rolling. The rolling temperature is 1000°C, and the billet size after rolling is: thickness 55mm×width 2000mm×length 1550mm; then the slab is reversed, and the temperature of the slab is tested with a hand-held infrared thermometer. When the temperature is 970°C, carry out Two-phase area rolling, the billet size after r...

Embodiment 2

[0047] a. The dimensions and specifications of titanium alloy rolled slabs for special vehicles are: thickness 120mm×width 1000mm×length 1300mm, and the stepping electric heating furnace is used to heat the billet. The temperature and holding time of each section meet: the preheating section 750°C Keep warm for 20 minutes, keep warm for 20 minutes at 1050°C in the heating section, and keep warm for 90 minutes at 1050°C in the soaking section;

[0048] b. After cooling the ingredients to the rolling temperature, turn off the cooling water of the roller table and the phosphorus removal water, and quickly transfer the billet to the reversing rolling mill for reverse rolling. The rolling temperature is 1000°C, and the billet size after rolling is: thickness 50mm×width 2200mm×length 1350mm; then the slab is reversed, and the temperature of the slab is tested with a hand-held infrared thermometer. When the temperature is 950°C, carry out Two-phase area rolling, the billet size after...

Embodiment 3

[0052] a. The dimensions and specifications of titanium alloy rolling slabs for special vehicles are: thickness 100mm×width 1100mm×length 1400mm. Stepping electric heating furnace is used to heat the billet. The temperature and holding time of each section meet: preheating section 670°C Keep warm for 20 minutes, keep warm for 15 minutes at 1050°C in the heating section, and keep warm for 80 minutes at 1040°C in the soaking section;

[0053] b. After cooling the ingredients to the rolling temperature, turn off the cooling water of the roller table and the phosphorus removal water, and quickly transfer the billet to the reversing rolling mill for reverse rolling. The rolling temperature is 1000°C, and the billet size after rolling is: thickness 50mm×width 2200mm×length 1450mm; then the slab is reversed, and the temperature of the slab is tested with a hand-held infrared thermometer. When the temperature is 950°C, carry out Two-phase area rolling, the billet size after rolling: t...

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Abstract

The invention discloses a hot working method for improving the high-speed impact resistance of a two-phase titanium alloy, and belongs to the technical field of titanium alloy material preparation. The hot working method for improving the high-speed impact resistance of the two-phase titanium alloy comprises the following steps that a, step-by-step heating is conducted on a two-phase titanium alloy flat blank; b, a reversing rolling mode is adopted, transverse rough rolling is conducted firstly, then the plate blank is reversed, and longitudinal rolling is conducted; and c, the rolled plate is subjected to water cooling, and then solid solution heat treatment and aging treatment are conducted. According to the method, the transverse and longitudinal performance anisotropy of the finished plate can be reduced by adopting a beta-phase region and alpha+beta two-phase region two-stage rolling method, high strength and excellent high-speed impact resistance of the product can be guaranteed by matching rapid cooling after rolling and solid solution aging strengthening heat treatment, the protection performance of the material is greatly improved, and the hot working method can effectively solve the problems that an existing two-phase titanium alloy plate is low in strength and poor in high-speed impact resistance.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material preparation, relates to a special vehicle titanium alloy plate, and in particular relates to a thermal processing method for improving the high-speed impact resistance of a two-phase titanium alloy. Background technique [0002] To improve the mobility, fuel efficiency and transportability of special vehicles, there is an increasing need to reduce the weight of armored structures used in various applications such as tanks and helicopters. Due to its high specific strength, excellent mechanical properties and good anti-ballistic properties, the application of titanium alloy armor has received more and more attention. In order to maintain the high strength of the titanium alloy sheet for special vehicles and maximize the high-speed impact resistance of the material, it is necessary to strictly control the hot forming process and heat treatment process during the hot working process. ...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B3/00B21B37/74B21B45/00B21B45/02C21D8/02C22C14/00C22F1/18
CPCB21B1/38B21B45/004B21B37/74B21B45/0218B21B3/00C21D8/0226C21D8/0247C22F1/183C22C14/00B21B2001/386
Inventor 杨柳王莹刘昕吴静怡
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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