As cast condition large gradient material preparation method and utilization device thereof

Abstract

The invention belongs to the field of materials, in particular to an as cast condition large gradient material preparation method and a utilization device thereof. The large gradient material preparation method comprises the steps of selecting alloy materials with semi-solid temperature ranges, heating the alloy materials and enabling the alloy materials to be completely melted so as to obtain alloy melt; feeding 6-60% of enhanced phase particles into the alloy melt, and then applying ultrasonic vibration on the alloy melt and the enhanced phase particles; reducing the temperature of the alloy melt to the alloy semi-solid temperature range, and enabling the solid fraction in the solid-liquid mixture to be 6-61%; after applying ultrasonic stationary fields on the solid-liquid mixture for 2-1200s, cooling the solid-liquid mixture, and obtaining the as cast condition large gradient material after solidification. According to the as cast condition large gradient material preparation method, the enhanced phase particles and the alloy melt are mixed evenly, the viscosity of the alloy melt is adjusted, and the motion resistance of the enhanced phase particles in the alloy melt is increased, so that gradient distribution of the enhanced phase particles in a large range of the alloy material can be achieved.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a preparation method of a cast bulk gradient composite material and an application device thereof. Background technique [0002] Functionally graded materials (Functionally Graded Materials, referred to as FGM), or gradient materials, refers to the composition and microstructure of the material along the thickness direction from one side to the other in a continuous gradient change, so that the properties and functions of the material are also gradient A new type of heterogeneous composite material with changes. Since the concept of this material was proposed in the 1980s, due to its unique properties, it has attracted widespread attention from all over the world. Compared with traditional homogeneous composite materials, gradient materials have good designability, can give full play to the advantages of each single material, make up for the shortcomings, and make it have ne...

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Problems solved by technology

At present, there have been a lot of researches on the preparation of homogeneous composite materials by using ultrasound, but there are only few literatures on the preparation of gradient composite materials by using ultrasound.

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