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强度因子G是钢中残余奥氏体X射线衍射测定方法中的重要参量。为计算G因子的数值,必须知道马氏体奥氏体的单胞体积v,洛伦兹偏振因子L_P、德拜瓦洛温度因子e~(-2M)、结构因子F和原子散射因子j。这些因数都与马氏体奥氏体的成分有关。若严格计算G因子,必须测算出马氏体,奥氏体的成分,这通常是难以办到的。于是许多工作者用钢种成分代替基体成分计算G因子,影响了G的计算精度,给残余奥氏体的测定引进了不可忽视的误差。目前,文献中能收集到的并可以引用的G数据甚少,还远不能满足实际
The strength factor G is an important parameter in the residual austenite X-ray diffraction measurement method in steel. In order to calculate the value of the G factor, it is necessary to know the unit cell volume v of martensite austenite, the Lorentz polarizer L_P, the Debye Waal temperature factor e ~ (-2M), the structure factor F and the atomic scattering factor j. These factors are related to the composition of martensite austenite. If the strict calculation of G factor, you must measure the martensite, austenitic composition, which is usually difficult to do. Therefore, many workers use the steel component instead of the matrix component to calculate the G factor, which affects the calculation accuracy of G and introduces the error that can not be ignored in the determination of retained austenite. At present, the G data that can be collected and can be quoted in the literature is very little, far from satisfying the actual