Aging transformation in
Cu-3.2Ni-0.75Si alloy
Cu-3.2Ni-0.75Si alloy
(1. Institute of Materials Science and Engineering,
Xi′an Jiaotong University, Xi′an 710049, China
2. Department of Materials Engineering,
Luoyang Institute of Technology, Luoyang 471039, China)
Xi′an Jiaotong University, Xi′an 710049, China
2. Department of Materials Engineering,
Luoyang Institute of Technology, Luoyang 471039, China)
Abstract: The aging processes in Cu-3.2Ni-0.75Si alloy were examined by means of transmission electron microscope , X-ray diffractometer and high-resolution transmission electron microscopy. It is concluded that before the formation of Ni2Si phase there exist continuous phase transformation processes, namely ordering, spinodal decomposition. Thereafter, the solute-rich zones form Ni2Si phase which is coherent with the matrix.
Key words: Cu-Ni-Si alloy; transformation; aging; spinodal decomposition; ordering