Alloying method for restraining aluminum alloy recrystallization

A technology for alloying and aluminum alloys, which is applied in the field of alloying to inhibit recrystallization of aluminum alloys, can solve the problems of increasing alloy costs, restricting the application and promotion of Sc-containing aluminum alloys, and the high price of rare earth Sc, so as to suppress recrystallization and reduce costs. Low, good deformation effect

Inactive Publication Date: 2017-04-05
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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Problems solved by technology

However, the researchers also found that although the composite alloying of Sc and Ti can effectively improve and avoid the coarsening and segregation of the second phase particles, give full play to the grain refinement effect of Ti and effectively inhibit the recrystallization of the alloy, the rare earth Sc The price of Sc is very expensive, even adding a small amount of Sc element will greatly increase the cost of the alloy, thus greatly restricting the application and promotion of Sc-containing aluminum alloys. At present, Sc-containing aluminum alloys are still in the experimental research stage. Not yet in industrial production

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  • Alloying method for restraining aluminum alloy recrystallization
  • Alloying method for restraining aluminum alloy recrystallization
  • Alloying method for restraining aluminum alloy recrystallization

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Embodiment 1

[0045] According to the chemical composition range of the alloying method of the present invention, the required alloyed samples are prepared and processed, and the preparation process is as follows:

[0046] According to the designed chemical composition ratio of Zr 0.15%, Ti 0.15%, Al 99.7%, the domestic raw materials Al-10Ti, Al-10Zr master alloy and high-purity aluminum are weighed for batching. Put all the prepared ingredients into the vacuum high-frequency electromagnetic oscillating electric arc furnace, and pump the vacuum to 6×10 -2 Pa~8×10 -3 Pa, then feed 0.05MPa high-purity argon gas into the smelting vacuum chamber, and then set the furnace temperature to a predetermined temperature until all the ingredients are melted, keep it warm for 5 minutes under electromagnetic vibration, and then pour it into a water-cooled copper mold to make Alloyed samples were obtained.

[0047] The effects of Ti, Zr composite alloying and Ti, Zr single alloying on alloy recrystalliz...

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Abstract

The invention provides an alloying method for restraining aluminum alloy recrystallization. The alloying method only involves three kinds of alloy elements being Al, Ti and Zr, involves no precious metal and is low in cost. A melt is obtained through high-frequency electromagnetic oscillation treatment in the vacuum environment under high-purity argon shield, the ally impurity and air hole content is quite small, and all components are dispersedly and uniformly distributed in alloy. Meanwhile, the Ti and Zr elements are separated out in the mode of fine highly-dispersed Al3Zr and Al3(Ti and Zr) second-phase particles in the follow-up ally hot working process, and the dispersed second-phase particles are good in heat stability, can effectively pin dislocation and subboundary in a deformation structure and have a strong restraining effect on the alloy recrystallization process. In other words, the obtained alloy has strong recrystallization resistance, and the state of the deformation structure is well kept. The prepared alloyed aluminum alloy is Ti and Zr high-saturability solid solution state alloy.

Description

technical field [0001] The invention relates to an alloying method for suppressing recrystallization of aluminum alloy. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal material in industrial production. It has been widely used in aerospace, automobile and ship, electrical and electronic fields due to its unique performance characteristics. Plastic deformation of aluminum alloys through plastic processing (mainly pressure processing) is an important processing method to obtain the desired shape, size, structure and performance. Plastic forming will produce work hardening, which will significantly improve the strength and hardness of the alloy; at the same time, the formation of fibrous structure will make the structure and properties of the alloy anisotropic, thus meeting the different needs of aluminum alloys in industrial production. For example, for forging gear blanks, the bars should be upset so that the fibers are radial, which is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/00C22F1/04
Inventor 余爱武杨成刚顾丹顾华洋胡蓝
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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