title: Electron diffraction identification of structure types of martensite in Cu-Zn-Al alloys.
abstract: Electron diffraction technique for identifying structure types of martensite in beta-Hume-Rothery alloys is described. It includes determination of the stacking sequence of the martensite of the basal planes, differentiation of the long-range ordering in martensite inherited from its parent phase (A2 type disordered; B2 type ordered; and D03, or Heusler, type ordered), and distinguishing between normal-type and modified-type martensite. In addition to the 18R1-type martensite, 12R, 6R, and 2H martensites were found in quenched Cu-Zn-Al alloys using this technique.
mesh_terms: D000497:Alloys / Q000032:analysis*; D003461:Crystallography; D008854:Microscopy, Electron / Q000379:methods; D015394:Molecular Structure; D013232:Steel / Q000032:analysis; D014961:X-Ray Diffraction / Q000379:methods*
chemical_list: D000497:Alloys; D013232:Steel