Method for analyzing and predicting formability of MAX-phase material

Abstract

The invention discloses a method for analyzing and predicting the formability of an MAX phase material. The method includes: selecting characteristic factors influencing the material structure; designing a feature model influencing the MAX phase structure on the basis of the selected feature factor; physical parameters are input to construct a structure mapping graph, MAX phase structures are distributed according to different areas in the structure mapping graph, various structures are classified according to the physical parameters calibrated by coordinates and serve as initial guidance forpredicting an unknown MAX phase, and then the unknown structure of a new material can be predicted through the method. The method is a method which is relatively successful at present and does not need to be helped by experiments to carry out structure prediction. Moreover, the method provided by the invention can greatly reduce the consumption of manpower and computing resources, saves the cost,and provides theoretical guidance for the synthesis of high-performance MAX-phase materials.

Description

Technical field [0001] The invention relates to the field of materials science, in particular to a method for analyzing and predicting the forming ability of a ternary layered carbide or nitride material, in particular to a method for analyzing and predicting the forming ability of a MAX phase material. Background technique [0002] There is a close relationship between material structure and performance. Therefore, the study of material structure runs through the entire course of the development of materials science and will continue to occupy an important position in the research of materials science. Nowadays, the acquisition of material structure information is also a prerequisite for modeling and analysis of various materials; therefore, the determination of material structure is a key step for further understanding and analysis of material properties. [0003] MAX phase material (Molecular formula is M n+1 AX n , N=1, 2 or 3) is a new layered machinable cermet material with h...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of time-consuming crystal structure stability prediction methods in the prior art, high test cost and low prediction accuracy, the present invention provides a method for analyzing and predicting the ability to form MAX phase materials, constructing a two-dimensional structure mapping map, delineating and extracting The feature domain that can be formed by MAX phases, extracts effective criteria that can judge the ability to form MAX phases, and provides guidelines for searching for new MAX phases

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