Method for preparing heterogeneous material through plasma cladding

Abstract

The invention belongs to the field of preparation of heterogeneous materials, and particularly relates to a method for preparing a heterogeneous material through plasma cladding. The method includes the four procedures of pre-treatment, bottom layer cladding, multi-layer cladding and solution treatment and aging precipitation, and comprises the specific steps that plasma cladding is utilized, a high-strength material B is cladded on a high-toughness material A matrix, then the high-toughness material A is cladded on a high-strength material B matrix, the above operation is repeated according to a specific lap joint and stacking mode, finally the heterogeneous material controllable and devisable in a three-dimensional direction is obtained through solid treatment and aging precipitation, and finally high strength and high toughness of the material are achieved. According to the method, the multi-layer complex heterogeneous composite material is prepared through the plasma cladding process and solid treatment and aging precipitation, so that impurity doping and interfacial oxidation are effectively avoided, industrial production is easy, the applicable raw material range is wide, cladding patterns and shapes are diversified, and a heterogeneous structure is controllable and devisable in the three-dimensional direction.

Description

technical field [0001] The invention belongs to the field of preparation of heterogeneous materials, and in particular relates to a method for preparing heterogeneous materials by plasma cladding. Background technique [0002] Metal structural materials are widely used in military, industrial, aviation and other fields. People improve the mechanical properties of materials through a variety of strengthening and toughening mechanisms, making them more efficient and safe to use. However, for homogeneous materials, the improvement of strength is often at the expense of plasticity, which severely limits the application and development of structural materials. Therefore, how to achieve both strength and plasticity has become a hot spot and focus in the research of metal structural materials. [0003] Heterogeneous materials are a new type of high-strength and high-toughness materials proposed in recent years. Different from traditional homogeneous materials, it constructs soft...

AI Technical Summary

Problems solved by technology

However, there are the following problems in this technology: (1) It is difficult to control the oxidation of the interface; (2) The size of the sample obtained by high-pressure torsion is too small; (3) The precision requirements for equipment and molds are very high, the process is complicated, and the production efficiency is low.

Its limitations are: (1) The pre-rolling treatment work includes multiple operations such as surface cleaning, cutting, argon arc welding sealing, heating, etc. The requirements are high and the production efficiency is low; (2) There are surface cleanliness, sealing Oxidation is difficult to control during hot rolling; (3) It is difficult to guarantee the bonding strength of the composite interface

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