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一前言合金中相含量的测定有多种方法。如果样品是无织构的两相合金,在X射线衍射中,采用直接对比法简便易行。但如果样品内存在织构,尤其是存在强织构时,采用直接对比法会造成很大偏差。为消除或减少织构对定量相分析的干扰,人们曾提出多种修正方法,例如,Gullberg法和Horta法等。本文提出一种新方法,把实测总强度按理论强度比例均分,称均分强度法,与Gullberg法和Horta法效果几乎相同。当对强烈织构材料采用该方法与摆动样品相结合时,得到较满意的结果。本文用Gullberg法、Horta法和均分强度法对织构钢中残余奥氏体的含量进行了测定。结果表明,在测量残余奥氏体时,三种方法效果基本相同。
A foreword Determination of phase content in alloys There are a variety of ways. If the sample is a textured, two-phase alloy, the direct comparison method is simple and easy to use in X-ray diffraction. However, if there is texture in the sample, especially in the presence of strong texture, the direct comparison method will cause a great deviation. In order to eliminate or reduce the interference of texture to quantitative phase analysis, a variety of correction methods have been proposed, for example, Gullberg method and Horta method. In this paper, a new method is proposed, which divides the measured total intensity according to the ratio of theoretical intensities, which is called the average intensity method, which is almost the same as Gullberg method and Horta method. Satisfactory results have been obtained when this method is combined with wobbled samples for strongly textured materials. In this paper, Gullberg method, Horta method and the average strength method for the determination of retained austenite in textured steel. The results show that, in the measurement of residual austenite, the three methods are basically the same effect.