The Width of X-Ray Diffraction Lines From Cold-Worked Tungsten andα-Brass

The x-ray line width from specimens of cold worked α-brass and tungsten has been measured as a function of Bragg angle and of x-ray wave-length. The results are in agreement with a microstress theory of broadening. In α-brass the line width is found to depend on crystallographic direction in a systematic manner while with tungsten it does not. Both observations are explained on the basis of the elastic properties of the materials.