中文名称: 测定金属晶体定向的试验方法 |
英文名称:Standard Test Method for Determining the Orientation of a Metal Crystal |
中标分类：H21 | ICS分类：77.040.99 |
标准分类编号：AS | 页数：13 |
发布日期： | 实施日期：2009-10-01 | 作废日期： |
被替代标准： | 代替标准：ASTM E82-1991(2007) | |
引用标准： | 采用标准： | |
起草单位： | 归口单位： | |
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范围：1.1 This test method covers the back-reflection Laue procedure for determining the orientation of a metal crystal. The back-reflection Laue method for determining crystal orientation (1, 2) may be applied to macrograins (3) (0.5-mm diameter or larger) within polycrystalline aggregates, as well as to single crystals of any size. The method is described with reference to cubic crystals; it can be applied equally well to hexagonal, tetragonal, or orthorhombic crystals. 1.2 Most natural crystals have well developed external faces, and the orientation of such crystals can usually be determined from inspection. The orientation of a crystal having poorly developed faces, or no faces at all (for example, a metal crystal prepared in the laboratory) must be determined by more elaborate methods. The most convenient and accurate of these involves the use of X-ray diffraction. The “orientation of a metal crystal” is known when the positions in space of the crystallographic |
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