| Title |
On the Crystallographic Features of Cr2N Precipitates in High-Nitrogen Austenitic Stainless Steel -2. TEM Study on the Crystal Structure of Cr2N |
| Authors |
이태호(Tae Ho Lee); 오창석(Chang Seok Oh); 이창길(Chang Gil Lee); 김성준(Sung Joon Kim); 고목절웅(Setsuo Takaki) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Crystal structure; Superlattice reflection; trigonal; ε-type ordering and TEM |
| Abstract |
In the second part of this study, the crystal structure of Cr₂N precipitates was investigated utilizing transmission electron microscopy (TEM). Based on the analyses of SAD patterns with various zone axes, the crystal structure of Cr₂N was confirmed to be trigonal belonging to the space group P31m, and could be explained in terms of E-type occupational-ordering model. Three sets of superlattice reflections (001), (⅓⅓0) and (⅓⅓1) distinguishing trigonal from hcp were identified in Cr₂N superstructure, and the important characteristics of these reflections were discussed in comparison with the previous studies. (Received August 23, 2004) |