EN
Alloying effect on the K_{α} and K_{β} X-ray fluorescence cross-sections in Cr_{x}Ni_{1-x} and Cr_{x}Al_{1-x} alloys was studied. The samples were excited by gamma rays with energy 59.5 keV from a^{241}Am radioisotope source and K X-rays emitted by the samples were counted with a Si(Li) detector. We found that K_{α} and K_{β} X-ray fluorescence cross-sections are changed by alloying effect in Cr_{x}Ni_{1-x} and Cr_{x}Al_{1-x} alloys for different composition x. We compared our results with the theoretical values.