Analysis method for corresponding phase change in thermal treatment machining process of metal material
A metal material and processing technology, applied in the field of metal materials with phase transition, can solve the problems of complex quantitative measurement and analysis technology and high test cost, and achieve the effect of fast speed, less consumables, and low preparation requirements
Inactive Publication Date: 2015-05-13
SHANGHAI INSTITUTE OF TECHNOLOGY
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[0004] The purpose of the present invention is to provide an analysis method for the corresponding phase change in the heat treatment process of metal materials in order to solve the technical problems of complex quantitative measurement and analysis technology and high test costs in the phase change analysis process of metal materials
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Embodiment 1
[0028] A method for analyzing corresponding phase changes in the heat treatment process of metal materials, specifically comprising the following steps:
[0029] (1), first establish the relationship between the temperature and density of the metal material to be tested
[0030] First measure the corresponding densities of the three metal materials to be tested under different heat treatment states, and then use the processing temperature as the abscissa and the density as the ordinate to establish the relationship between the temperature and density of the metal material to be tested, that is, the working curve;
[0031] The material to be analyzed and tested is aluminum alloy with brand 2XXX, the size of the three metal samples is about 20′20′10mm, and the weight is greater than 10 g . After solid solution treatment first, this measurement is the measurement of its aging effect. The three sample numbers are G 1 , G 2 and G 3 ; where G 1 aging at 100°C; G 2 It is aged ...
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The invention discloses an analysis method for corresponding phase change in the thermal treatment machining process of a metal material. According to the analysis method, the phase change situation of the metal material to be detected can be quantitatively analyzed and judged according to the change of density of the metal material to be detected. The analysis method comprises the following steps: firstly, measuring corresponding density of the metal material to be detected in different thermal treatment state; secondly, by taking thermal treatment temperature as a transverse coordinate and the density of the metal material to be detected as a longitudinal coordinate, establishing a relationship equation of the thermal treatment temperature of the metal material to be detected and the density of the metal material to be detected, that is, a working curve; on the basis of the working curve diagram, according to the position of the density value of the metal material to be detected in the working curve diagram, or by comparing the density in different thermal treatment state, quantitatively judging the corresponding phase situation of the metal material to be detected in one thermal treatment state. The analysis method has the advantages of simple test sample preparation, convenient operation and high experimental data precision, repeatability and reliability.
Description
Technical field [0001] The present invention involves an analysis method for changes in the corresponding object changes in the heat treatment process of metal materials. These metal materials include steel materials, aluminum alloy, magnesium alloy, titanium alloy, etc. This analysis method is suitable for all metal materials with phase transformationsEssence Background technique [0002] During the processing process of metal materials, it will change its material structure. For example, some steel and some aluminum and magnesium alloy materials can be changed by heat treatment to change its structure and phase composition, thereby achieving the purpose of changing and improving material performance.The changes in the micro state of metal materials will generally cause changes in its size and other performance. For example, the first -level phase change of solid materials is accompanied by changes in volume and size.Because such changes are generally small, and the testing and ...
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Inventor 刘克家薛银陈琨陈慧芬王浩付伟英
Owner SHANGHAI INSTITUTE OF TECHNOLOGY