Forming method of block-shaped amorphous composite material

Abstract

The invention relates to a forming method of a block-shaped amorphous composite material, which is characterized by comprising the following steps: (1) selecting a block-shaped amorphous composite material which has the component purity greater than 99.3% and substrate components with strong glass forming capacity, preparing a high-purity block-shaped amorphous composite material, and cutting the block-shaped amorphous composite material into an ingot blank according to a forming part; (2) heating the ingot blank under gas protection at the speed of 0.5-50 DEG C / s to the liquidus temperature and the solidus temperature range of the block-shaped amorphous composite material, and insulating for 3-30 minutes; and (3) under pressure, filling a liquid-solid coexistent metal slurryinto a mold cavity at a deformation rate of 102-106s<-1>, and forcibly cooling for solidifying at the cooling speed of 1-200 DEG C / s while maintaining the pressure. The invention can obtain the metal slurry the second phase of which is uniformly distributed in the liquid phase, has low forming temperature, long service life of the mold and high production efficiency, improves the product performance, can be used for forming parts with complex forming shapes and thin walls, and can be widely applied to amorphous composite materials of Zr-series, Cu-series, Ti-series, La-series, Co-series and the like.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloy forming. In particular, the invention provides a method for forming precision parts of bulk amorphous composite materials. It can be used for bulk amorphous composite materials such as Zr-series, Cu-series, Ti-series, La-series and Co-series. technical background [0002] Due to its unique structure and excellent performance, bulk amorphous materials show broad application prospects in machinery, electronics, chemical industry, sports equipment and even national defense and military. However, except for a few recently developed bulk amorphous crystals that exhibit macroscopic plasticity, the highly localized shear behavior allows the vast majority of bulk amorphous crystals to fail abruptly without significant room-temperature macroscopic plastic deformation. Catastrophic fracture, which severely restricts the large-scale application of bulk amorphous materials in engineering as advanced...

AI Technical Summary

Problems solved by technology

However, this preparation method has its inherent shortcomings and limitations: (1) The microstructure is difficult to control, and the formation of two-phase microstructure strongly depends on the alloy composition and solidification rate; the sample shape, size and the melt quenching adopted The change of the forming process has a significant impact on the microstructure characteristics, especially the distribution of the microstructure in the whole sample is very uneven

(2) High cooling rate leads to the generation of internal stress in the material

Coupled with the slow deformation rate (10 -2 ~10 -4 the s -1 ), not only lead to low processing efficiency, but also very easy to cause crystallization of amorphous alloys during deformation

This is also the main reason for the slow development of bulk amorphous materials in terms of forming processing and practical application.

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