Pure titanium two-step plastic deformation processing method

Abstract

The invention relates to a pure titanium two-step plastic deformation processing method in the technical field of metallic material plastic deformation; the method comprises the following steps: level-3 industrial pure titanium block is taken as the raw material, after being coated with graphite lubricant, the material is extruded on a 300KN hydraulic pressure universal experimental machine and then is subjected to rolling treatment at liquid nitrogen temperature to carry out deformation treatment on submicron crystal industrially pure titanium block, thus obtaining the superfine crystal pure titanium. The superfine crystal pure titanium of the invention features a tensile strength of 1218MPa and a specific elongation of 12.6%.

Description

technical field

[0001] The invention relates to a processing method in the technical field of plastic deformation of metal materials, in particular to a two-step plastic deformation processing method for pure titanium. Background technique

[0002] In recent years, the development of biomedical materials has attracted more and more attention from all over the world. Among biomedical materials, metal materials are the earliest to be used, mainly used to repair bones, joints, teeth, and blood vessels. Currently used in biomedical materials are mainly stainless steel, titanium and titanium alloys. Titanium has certain strength and high plasticity, and the σ of high-purity titanium b =300MPa, δ=40%, small density (4.51g / cm 3 ), the melting point is (1663±10)°C, and it has excellent corrosion resistance and heat resistance. At the same time, titanium is a non-magnetic metal and will not be magnetized in a large magnetic field. Titanium and its alloys also have an elastic modu...