A method and application of indirect detection of plastic deformation ability of deformed aluminum alloy

Abstract

The invention belongs to the technical field of materials, and specifically relates to a method of indirectly detecting plastic deformation capacity of deformed aluminum alloy, and application. The method of indirectly detecting plastic deformation capacity of deformed aluminum alloy specifically comprises steps of measuring microwave resonance absorption strength of the deformed aluminum alloy; measuring elongation of the deformed aluminum alloy; building a measurement model for the plastic deformation capacity of the deformed aluminum alloy; determining a relational expression of I and Deltathrough regression analysis, and building a measurement model for the plastic deformation capacity of the deformed aluminum alloy; and measuring plastic deformation capacity of to-be-measured deformed aluminum alloy: detecting electron paramagnetic resonance spectroscopy of the cleaned to-be-measured deformed aluminum alloy, acquiring alloy microwave resonance absorption strength I<1>, and calculating elongation Delta<1> so as to represent the plastic deformation capacity of the material. The measurement method belongs to nondestructive detection, does not destroy samples, and helps reduce material consumption; and eliminates experimental errors through repeated measurement. The method adopts electron paramagnetic resonance spectroscopy detection, thereby being highly reliable and suitable for large-scale application.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a method and application for indirect detection of the plastic deformation ability of a deformed aluminum alloy. Background technique [0002] The plastic deformation ability of the material is the main aspect of the material performance. At present, the tensile performance of the material is mainly obtained through the tensile test, and the plastic deformation ability of the material is mainly characterized by the elongation and the reduction of area. At this time, it is necessary to process the standard Tensile samples require a certain size and a certain quality of the material to be tested, which consumes a relatively large amount of raw materials; the tensile test is a destructive test, and it is easy to cause processing stress in the sample during the processing of the sample. The experimental results The error is high; at the same time, due to the internal di...

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Problems solved by technology

[0002] The plastic deformation ability of the material is the main aspect of the material performance. At present, the tensile performance of the material is mainly obtained through the tensile test, and the plastic deformation ability of the material is mainly characterized by the elongation and the reduction of area. At this time, it is necessary to process the standard Tensile samples require a certain size and a certain quality of the material to be tested, which consumes a relatively large amount of raw materials; the tensile test is a destructive test, and it is easy to cause processing stress in the sample during the processing of the sample. The experimental results The error is high; at the same time, due to the internal difference of the material, errors will inevitably occur in the detection part during practical application, which puts forward higher requirements for the experimental conditions and material sampling. Method There are many deficiencies in the standard tensile test, and it is necessary to invent a new method to detect the plastic deformation ability of the material with the development of the existing technology

[0003] Electron paramagnetic resonance (EPR) spectroscopy is one of the performance testing methods for modern new materials, and it is a spectral method for detecting samples containing unpaired electrons; the EPR phenomenon was first discovered by the former Soviet scientist Е.K. Zavoyski discovered it from paramagnetic salts in 1944; initially EPR technology was mainly used to study the electronic structure, crystal structure, dipole moment and molecular structure of some complex atoms, mainly in microstructure research In the field, after literature search, there is no report that electron paramagnetic resonance spectroscopy is used to determine the mechanical properties of metal materials; because there is a relationship between the properties of metal materials and the material structure, a detection method is invented through the study of material microstructure. The method of mechanical properties of materials is worth trying

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