Surface strengthening processing method for pinchbeck alloy

Abstract

The invention discloses a surface strengthening processing method for pinchbeck alloy, and belongs to the technical field of metal material machining. A pinchbeck alloy panel is annealed for 1-2 hours at the temperature of 800 DEG C to 850 DEG C, and a high-energy ball milling machine is utilized for carrying out surface nanocrystallization processing on the annealed pinchbeck alloy panel under the vacuum environment or the liquid nitrogen environment. The pinchbeck alloy panel is subjected to impact and is deformed through 100-200 steel balls with the diameter of 8 mm to 10 mm, the frequency ranges from 20 Hz to 50 Hz, time ranges from 5 min to 30 min, and therefore the high-strength and high-plasticity gradient nanometer pinchbeck alloy material good in stability is manufactured. The method is simple in preparing process, and the panel with the strength two times the strength of traditional annealed pinchbeck alloy can be obtained, wherein good plasticity of the panel can be kept. The prepared high-strength and high-plasticity pinchbeck alloy panel material has wide application space in the rapidly developed industries such as electronic communication, aerospace and weapons.

Description

technical field [0001] The invention relates to a surface strengthening treatment method of copper-zinc alloy, which belongs to the technical field of metal material processing. Background technique [0002] Copper and copper alloys are widely used in information communication, machinery manufacturing, electrical, electronic, construction, chemical, energy, and national defense industries due to their excellent electrical conductivity, thermal conductivity, ornamental properties, corrosion resistance, and good mechanical properties. and other modern engineering technology fields. All kinds of electronic products, household appliances, industrial facilities, etc. are inseparable from copper and copper alloy products. They have become irreplaceable important engineering materials in production and life. [0003] Copper-zinc alloys have good mechanical properties, process properties and corrosion resistance, and some have high electrical conductivity and cutting performance. T...

AI Technical Summary

Problems solved by technology

With the rapid development of industrial technology, traditional processing methods have gradually been difficult to meet the demand for high-performance materials, and higher indicators have been put forward for the strength and plasticity of copper-zinc alloys.

At present, large plastic deformation methods such as equal-diameter angular extrusion, high-pressure torsion, and stack rolling are commonly used to prepare ultra-fine-grained metal materials. By greatly refining the grain size, a large number of grain boundaries are formed to effectively hinder dislocation movement, so that the strength can be improved. has been greatly improved, but the tensile plasticity of bulk ultrafine-grained materials at room temperature is very low

High strength and high plasticity have become a pair of contradictory characteristics. The current preparation methods usually improve some of its mechanical properties by sacrificing plasticity or strength to a certain extent, but cannot truly achieve the optimal combination of the two.

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