Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of high-strength titanium alloy rod and wire

A technology of titanium alloys, rods and wires, applied in the field of titanium alloys, can solve the problems of insufficient strength of titanium alloys, achieve the effects of refining grain size, improving strength, and solving high-strength plasticity requirements

Active Publication Date: 2018-09-07
SOUTHEAST UNIV +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing high-strength titanium alloy rods and wires to solve the problem of insufficient strength of titanium alloys produced by traditional processes

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) The nominal β-transition temperature of TC4 titanium alloy is about 990°C, and the high-temperature deformation of TC4 titanium alloy rod and wire is carried out at about 980°C, and the strain rate is 2s -1 about;

[0018] (2) Warm tensile deformation of TC4 titanium alloy rods and wires at about 550°C, with a strain of about 1.2 and a strain rate of 0.001s -1 about;

[0019] (3) Pre-heat-treat the deformed TC4 titanium alloy rod and wire at 300°C for 4 hours;

[0020] (4) Anneal the TC4 titanium alloy rod and wire at about 650°C, and the annealing heating time is 3h.

[0021] The yield strength of the TC4 titanium alloy produced by the above steps reaches 980MPa, and the tensile strength reaches 1051MPa.

Embodiment 2

[0023] (1) High-temperature deformation of TC4 titanium alloy rods and wires at about 975°C, with a strain rate of 0.1s -1 about;

[0024] (2) Warm tensile deformation of TC4 titanium alloy rods and wires at about 520°C, with a strain of about 1.4 and a strain rate of 0.0001s -1 about;

[0025] (3) Pre-heat-treat the deformed TC4 titanium alloy rod and wire at 350°C for 2 hours;

[0026] (4) Anneal the TC4 titanium alloy rod and wire at about 620°C, and the annealing heating time is 4h.

[0027] The yield strength of the TC4 titanium alloy produced by the above steps reaches 995MPa, and the tensile strength reaches 1072MPa.

Embodiment 3

[0029] (1) High-temperature deformation of TC4 titanium alloy rods and wires at about 985°C, with a strain rate of 0.05s -1 about;

[0030] (2) Warm tensile deformation of TC4 titanium alloy rods and wires at about 580°C, with a strain of about 1.7 and a strain rate of 0.01s -1 about;

[0031] (3) Pre-heat-treat the deformed TC4 titanium alloy rod and wire at 260°C for 4 hours;

[0032] (4) Anneal the TC4 titanium alloy rod and wire at about 560°C, and the annealing heating time is 6h.

[0033] The yield strength of the TC4 titanium alloy produced by the above steps reaches 1022MPa, and the tensile strength reaches 1096MPa.

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
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a high-strength titanium alloy rod wire, and belongs to the technical field of titanium alloys. The preparation method comprises the following steps: a titanium alloy is hot-rolled at high temperature in a temperature interval of below beta conversion temperature Tbeta by 15 DEG C, and the strain speed is controlled within 3 s<-1>; the warm pull deformation is performed on the titanium alloy rod wire at 500-600 DEG C, the strain quantity reaches 1 or above, and the strain speed is controlled within 0.1 s<-1>; the deformed titanium alloy wire is stably pretreated at 250-380 DEG C, and the heat treatment time is 2-4 h; and then, the titanium alloy rod is annealed at 520-680 DEG C, and the heating time is 2-6 h. The titanium alloy rod wire produced by adopting the method is fine and uniform in structure, and is excellent in strength.

Description

[0001] Field [0002] The invention relates to a method for preparing high-strength titanium alloy rods and wires, belonging to the technical field of titanium alloys. Background technique [0003] Titanium alloys are widely used in various fields because of their high specific strength, corrosion resistance, heat resistance and many other advantages. With the continuous expansion of titanium alloy application fields, the demand and requirements for high-strength titanium alloys continue to increase. At present, the methods commonly used by researchers to improve the strength of titanium alloys include the following. Using the alloying method, adding Mo, Cr, V, Ta, Mn, Fe, Al and other elements, and adjusting the ratio of element content can improve the strength of titanium alloy, but the composition change not only increases the material production cost, but also increases the difficulty of the process . Heat treatment processes such as multiple annealing, quenching and ag...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18
CPCC22F1/183
Inventor 周雪峰李旭敏方峰蒋建清朱小坤
Owner SOUTHEAST UNIV