A kind of high-strength antibacterial titanium alloy plate and preparation method thereof

Abstract

The invention provides a high-strength antibacterial titanium alloy plate and a preparation method thereof. The chemical composition of the titanium alloy is as follows (% by weight): Al: 5.5-6.5; V: 3.5-4.5; Cu: 3-9; quantity. The preparation method of the titanium alloy plate is as follows: smelting in a vacuum consumable furnace to obtain raw material ingots; after the ingot is ground, it is processed into a slab by blank forging and precision forging above 1000°C; the slab is kept at 1000°C-1300°C for a period of time Rapid cooling after a period of time, the plate obtains an ultra-fine nano-slab structure; after quenching, the slab is rough-rolled at a temperature of 800 ° C to 900 ° C, and the cumulative deformation of hot rolling is greater than or equal to 90%, and an ultra-fine nano-slab structure plate is obtained; After rough rolling, the plate is finished rolled to the required size plate at 700℃~780℃. The microstructure of the plate obtained after processing by this method is equiaxed grain, the size is less than 400nm, and the grain does not coarsen and grow within 3 hours of aging at 650°C or below.

Description

A kind of high-strength antibacterial titanium alloy sheet and preparation method thereof technical field The present invention relates to the field of titanium alloy processing and preparation, in particular to a kind of high-strength antibacterial titanium alloy plate and preparation method thereof Law. Background technique Titanium alloy is a kind of metal with excellent biosafety, its density is low, its elastic modulus is close to that of human bones, and it has With high strength, titanium and its alloys are widely used in the field of medical and health care, especially in the field of oral and orthopedic repair. Such as brackets, bands, orthopedic arch wires, anchorage implants, artificial joints (hose, knee, shoulder, ankle, elbow, wrist, finger joints, etc.), bone trauma Injury products (intramedullary nails, plates, screws, etc.), spinal orthopedic internal fixation systems, etc. Titanium alloys have been used in the medical field for nearly 70 years, an...

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Problems solved by technology

Secondly, another advantage of medical titanium alloy is its low density, and its elastic modulus is close to that of the human body. However, when it is used as a load-bearing implant, such as the artificial hip joint, it often fails due to fracture failure. Bring great suffering to patients, resulting in a heavy mental and economic burden

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