Standard Test Method for Determining the Orientation of a Metal Crystal

Importancia y uso:

4.1 The physical properties of metals and other materials are often anisotropic (for example: Young's modulus will typically vary in different crystallographic directions). As such, it is often desirable or necessary to determine the orientation of a single crystal to ascertain the relation of any pertinent physical properties with respect to different directions in the material.

4.2 This test method can be used commercially as a quality control test in production situations in which a desired orientation, within prescribed limits, is required.

4.3 With the use of an adjustable, fixed holder that can later be mounted on a saw, lathe, or other machine, a single crystal material can be moved to a preferred orientation and subsequently sectioned, ground, or processed otherwise.

4.4 If the grains in a polycrystalline material are large enough, this test method can also be used to determine their orientations and differences in orientation can be documented or mapped or both.

Subcomité:

E04.11

Volúmen:

03.01

Número ICS:

77.040.99 (Other methods of testing metals)

Palabras clave:

back reflection Laue X-ray; hyperbolic chart; metal crystal; orientation; polar chart; standard projection; X-ray diffraction;