|
Vol.42, No.11, 854 ~ 860, 2004
|
| Title |
| On the Crystallographic Features of Cr2N Precipitates in High-Nitrogen Austenitic Stainless Steel -2. TEM Study on the Crystal Structure of Cr2N |
| 이태호 Tae Ho Lee , 오창석 Chang Seok Oh , 이창길 Chang Gil Lee , 김성준 Sung Joon Kim , 고목절웅 Setsuo Takaki |
|
|
|
| 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) |
|
|
| Key Words |
| Crystal structure, Superlattice reflection, trigonal, ε-type ordering and TEM |
|
|
 |
|
