Novel faulted structures in rapidly solidified Fe-37 at.% Al-15 at.% Mo alloy |
| |
| Affiliation: | 1. School of Materials Science and Engineering, University of Science & Technology Beijing, Beijing 100083, China;2. Shunde Graduate School of University of Science and Technology Beijing, Foshan 528399, China;1. DPIA, University of Udine, Via delle Scienze 206, 33100 Udine, Italy;2. NaMLab gGmbH, Nöthnitzer Str. 64a, 01187 Dresden, Germany;3. IHM TU Dresden, Nöthnitzer Str. 64, 01187 Dresden, Germany;1. Department of Chemistry, Shanghai University, Shanghai 200444, China;2. Department of Physics, International Center of Quantum and Molecular Structures and Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China;3. CNR-SPIN, c/o Dip.to di Scienze Fisiche e Chimiche, Università degli Studi dell''Aquila, Via Vetoio, 67100 Coppito (AQ), Italy;1. Chemical Engineering Department, National Institute of Technology Karnataka, Mangalore, 575025, India;2. Chemical Engineering Department, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576104, India;3. Chemical Engineering Department, National Institute of Technology Warangal, Warangal 506004, India |
| |
| Abstract: | Fe-37 at.% Al-15 at.% Mo has an equilibrium two-phase structure consisting of an ordered B2 (FeAl-based) matrix with Mo3Al as the second phase. Rapid solidification by chill-block melt-spinning suppresses the formation of the Mo3Al phase, giving instead single phase B2-FeAl supersaturated with Mo and containing a network of faults revealed by TEM. Imaging with B2 superlattice reflections revealed an anisotropic antiphase domain contrast while imaging with fundamental (b.c.c.) reflections showed typical stacking fault or thin precipitate contrast for the same faults. The faults were identified as a/2〈111〉{100} type B2 antiphase boundaries. It is proposed that the formation of such anisotropic and non-conservative antiphase boundaries is related to the retention of excess Mo within the B2 matrix by rapid solidification. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
