The texture of wire diffractometer method

As mentioned in Sec. 9-6, if a wire or rod has a true fiber texture, its pole figure will have rotational symmetry about the fiber axis and will resemble Fig. 9-8. We therefore have to measure pole density only along a single radius. The angle between the pole N and the fiber axis F.A. is usually called (j), rather than a, when dealing with fiber textures. 

The Field and Merchant method may be used to measure pole density, and two specimens are required to cover the entire 90° range of 0  

Diffracted intensities are to be divided by W to obtain numbers proportional to pole density. 

2) High-(j) region. X-rays are reflected from the side of the wire, as in Fig. 9-21(b). The specimen is a set of wires glued to a grooved plate. Equation (9-13) still applies, but now a. = p = p = (j . 

By analysis of an I, (j pole density curve we can (a) put pole densities on a times-random basis and (b) determine the relative amounts of the components in a double fiber texture [9.36-9.38]. 

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