Al-TiO2-C-XRE2O3 composite refiner, corrosion-resistant ZL205 alloy and preparation method of Al-TiO2-C-XRE2O3 composite refiner

Abstract

The invention discloses an Al-TiO2-C-XRE2O3 composite refiner, a corrosion-resistant ZL205 alloy and a preparation method of the Al-TiO2-C-XRE2O3 composite refiner. The Al-TiO2-C-XRE2O3 composite refiner is prepared by the following steps: firstly, uniformly mixing Al powder, TiO2 powder and C powder to obtain a mixed raw material A, then adding rare earth oxide RE2O3 powder into the mixed raw material A, and uniformly mixing to obtain mixed raw material powder; placing the mixed raw material powder in a ball mill for ball milling to obtain mixed ball-milled powder; pressing the mixed ball-milled powder into a precast block; placing the precast block in a corundum crucible, and filling the periphery of the precast block with Al2O3 powder; placing the corundum crucible filled with the precast block in a drying oven for drying; and drying the corundum crucible filled with the precast block, transferring the corundum crucible into a sintering furnace for sintering, and performing cooling along with the furnace after sintering is finished, so as to obtain the A l-T i O2-C-XRE2O3 composite refiner. The corrosion-resistant ZL205 alloy is prepared by adding the Al-Ti O2-C-XRE2O3 composite refiner into the ZL205 alloy. The refining agent provided by the invention is low in cost and good in refining effect, and the corrosion resistance of the ZL205 alloy can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation. Specifically Al-TiO 2 -C-XRE 2 o 3 Composite refiner and corrosion-resistant ZL205 alloy and its preparation method. Background technique [0002] Aluminum is one of the most abundant metal elements in the earth's crust. It can form aluminum-based alloys with high strength and light weight with copper, iron, magnesium, manganese and other metals. Due to its good mechanical properties, thermal conductivity, electrical conductivity and machinability, aluminum alloys are widely used in aerospace, electric power, machinery manufacturing and daily industry and other fields. [0003] As one of the important alloying elements in aluminum alloys, copper has remarkable solid solution strengthening and precipitation hardening effects in aluminum-based alloys. At the same time, CuAl precipitated by aging 2 Compared with the alloy, it has obvious strengthening effect, so the Al-Cu all...

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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to provide a kind of Al-TiO 2 -C-XRE 2 o 3 Composite refining agent and corrosion-resistant ZL205 alloy and its preparation method to solve the problems of the existing refining agent on ZL205 alloy with "poisoning" effect and poor stability, and at the same time provide a ZL205 alloy with good corrosion resistance to make it Can be applied to high-performance mechanical parts

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