Easy-to-cut titanium alloy

Abstract

The invention discloses easy-to-cut titanium alloy, which comprises the following components in percentage by weight: 3 percent to 6.1 percent of chromium, 1 percent to 4 percent of manganese, 5.1 percent to 8 percent of aluminum, 0.4 percent to 1.3 percent of silicon, 3.7 percent to 7 percent of magnesium, 1.3 percent to 2.7 percent of lead, and the balance titanium. According to the easy-to-cut titanium alloy provided by the invention, the manganese, the aluminum, a small amount of lead and other metals are added, a vacuum consumable-electrode arc melting technology is adopted for melting for three times repeatedly, and degassing, deoxidizing and impurity removing processes are better realized for the metal materials, so that a pure metal material billet is acquired; due to high melting rate and the accurate control of an electric arc heating area, the consistency of a melting metal solidification direction is ensured, a metal performance of the material is greatly improved, and the titanium alloy can be easily cut; and later, double annealing is carried out, so that recrystallization is fully carried out without increasing crystal particles in the titanium alloy, the plasticity and the structure stability of the titanium alloy are improved, the machinability of the titanium alloy is improved, and meanwhile, the high strength and the stability of the titanium alloy are further maintained.

Description

technical field

[0001] The invention relates to a titanium alloy in the technical field of metal materials, in particular to a titanium alloy which is easy to cut. Background technique

[0002] As a metal material, although titanium appeared later than copper, iron, and aluminum, it has excellent comprehensive properties such as low density, high strength, high temperature resistance, corrosion resistance, non-magnetism, and good biocompatibility. It is widely used in various fields.

[0003] According to the microstructure characteristics after annealing, titanium alloys can be divided into three categories: α, (α+β) and β-type titanium alloys. Among them, α-type titanium alloys have a stable structure, higher wear resistance than pure titanium, and strong oxidation resistance. α +β-type titanium alloy has good structural stability, good toughness, plasticity and high-temperature deformation properties. β-type titanium alloy can be strengthened by heat treatment, and has g...