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钢中残余奥氏体的含量是钢中组织的重要参数,X射线衍射仪法是测定钢中残余奥氏体普遍应用的方法,此法的优点在于简单易行,不足之处是很难进行其强度因子G的严格计算,结果波动较大。本文提出利用包括重叠线条在内的所有衍射峰信息进行无标测算,以求解钢中残余奥氏体量的方法。原理设无织构或织构完全相同的一组样品中含有残余奥氏体(A)与马氏体(M)两相,且:式中K为比例系数,I_A,I_M分别为A与M不重叠衍射峰的强度,Q为试样中A、M所有在扫描范围内的总强度(包括重叠峰),Q_A、
The content of residual austenite in steel is an important parameter in the microstructure of steel. X-ray diffractometry is a commonly used method for the determination of residual austenite in steel. The advantage of this method is that it is easy and can not be carried out The strict calculation of the intensity factor G, the results of large fluctuations. In this paper, a method of unscaled calculation based on all diffraction peaks including overlapping lines is proposed to solve the residual austenite in steel. Principle set no texture or texture exactly the same set of samples containing residual austenite (A) and martensite (M) two phases, and: Where K is the proportionality coefficient, I_A, I_M respectively A and M Does not overlap the intensity of the diffraction peak, Q is the total intensity (including overlapped peaks) of all the A and M in the scanning range in the sample, Q_A,