A device and method for casting heterogeneous metal rods

A metal bar and metal technology, applied in the field of heterogeneous material preparation, can solve the problems of inability to flexibly adjust the microstructure, inability to prepare large-size samples, and complex rolling process procedures, etc., to achieve flexibility, directionality, and low price , High yield effect
CN111283175BActive Publication Date: 2021-11-09NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2021-11-09

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Abstract

The invention belongs to the field of preparation of heterogeneous materials, in particular to a device and method for casting heterogeneous metal rods. Alternately cast two or more molten metals in the centrifugal casting section to obtain tubular materials in which two or more metals are alternately arranged radially, and then fill the core of the casting by die-casting to obtain two or more Metal castings in which the metals are arranged alternately in the radial direction, the obtained metal castings are demolded and subjected to stress relief annealing treatment, and finally the heterogeneous metal rods in which the different metals are arranged in the radial direction are alternately obtained. The heterogeneous metal rods prepared by the present invention have the characteristics of heterogeneous materials, and various alloy layers respectively improve the strength and toughness of the matrix to meet the needs of practical applications; the present invention can prepare large-sized heterogeneous metal rods with microstructure design With flexibility and directivity, the distribution ratio of different microstructures is easy to control, the casting yield is higher, and the application range is wider.
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Description

technical field

[0001] The invention belongs to the field of preparation of heterogeneous materials, in particular to a device and method for casting heterogeneous metal rods. Background technique

[0002] Metal materials are an important material basis for the development of human society. Various metal materials have been widely used in aerospace, packaging and other fields. However, the mutual restriction between its strength and toughness limits the further expansion of its application range. For traditional homogeneous materials, the increase in strength is often accompanied by a significant decrease in toughness, and it is difficult to achieve a good match between strength and toughness. Heterogeneous materials are composed of a variety of structures with significant differences in strength. During the deformation process, a large strain gradient will be generated near the interface of different structures, resulting in significant back stress to strengthen the materi...

Claims

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