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

A gradient material, bulk technology, applied in the field of materials, can solve problems such as few literatures

Inactive Publication Date: 2014-01-08
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 ...

Method used

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

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Embodiment 1

[0058] Such as figure 1 As shown, the device for preparing as-cast bulk gradient material in the present invention includes an ultrasonic generating device 1, a casting mold 2 and a temperature control system 3, and the ultrasonic generating device 1 includes an ultrasonic generating controller 101, a transducer 102, and a horn 103. Ultrasonic tool head 104, the ratio of the diameter of the ultrasonic tool head 104 to the inner diameter of the mold 2 is 0.9; the temperature control system 3 includes a temperature control measuring instrument 301, a thermocouple 302 and a heating / cooling system 303, the The thermocouple 302 is located in the casting mold 2, the temperature control measuring instrument 301 receives the signal of the thermocouple 302, measures the temperature of the slurry in the casting mold 2, and the temperature control measuring instrument 301 controls the heating / cooling The system 303 heats or cools the slurry in the mold 2 .

[0059] Utilizing the device ...

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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...

Claims

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Application Information

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IPC IPC(8): C22C32/00C22C33/06C22B9/02
Inventor 赵君文张鲲李微罗庆来戴光泽韩靖
Owner SOUTHWEST JIAOTONG UNIV
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