Method of screening irradiation-damage-resistant material by utilizing gradient structure

Abstract

The invention belongs to the field of irradiation damage resistance of materials, and particularly relates to a method of screening an irradiation-damage-resistant material by utilizing a gradient structure. The method comprises the following steps of (1), preparing a gradient structure material; (2), performing an irradiation experiment on the surface with different grain sizes of the gradient structure material; (3), performing mechanical property testing on samples in different grain size regions by utilizing nanoindentation and convergent ion beams for the irradiated material, and automatically preparing a microstructure characterization sample; and (4), performing transmission electron microscope and three-dimensional atom probe analysis. With the adoption of the method, the differentgrain sizes can be prepared on one sample, and then the irradiation experiment is performed, therefore, the quantity of samples required for researching an influence of the different grain sizes on irradiation damage can be reduced; the efficiency of preparation of the microstructure characterization sample can be improved; and the efficiency of screening of the irradiation-damage-resistant material can be improved.

Description

technical field [0001] The invention belongs to the field of radiation damage resistance of materials, in particular to a method for screening radiation damage resistance materials by using a gradient structure. Background technique [0002] With energy demand and reduced CO 2 The emission problem is becoming more and more prominent, and the development of nuclear power has become one of the important ways to solve the energy shortage of human beings. Today's nuclear power plant reactor methods are relatively mature, but there are still many methodological problems that are difficult to solve. Among them, the radiation damage of reactor materials is particularly prominent. The radiation damage of nuclear materials is closely related to the safety and economy of the reactor, and it is directly related to the safe operation of the nuclear power reactor. [0003] The main mechanism of radiation damage is mainly: a series of collisions between high-energy particles and metal ...

AI Technical Summary

Problems solved by technology

For the characterization of the microstructure, it is necessary to repeatedly replace the samples with different grain sizes for sampling, and then perform the characterization of the microstructure, which is time-consuming and the experimental efficiency is low.

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