Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 704, Issue -, Pages 128-137Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.07.065
Keywords
Cu-15Ni-85n-0.8Nb alloy; Microstructure evolution; Prior cold deformation; Transformation kinetics; Age-hardening
Categories
Funding
- National Key Research and Development Program of China [2017YFB0306105, 2016YFB0301402]
- State Key Laboratory of Powder Metallurgy
- innovation-driven plan of Central South University, Changsha, China
Ask authors/readers for more resources
The microstructure evolution of Cu-15Ni-8Sn-0.8Nb alloy during prior cold deformation by rotary swaging (RS) and subsequent aging treatment was investigated. Electron back scattered diffraction (EBSD) results indicated that the deformed microstructure mainly consisted of refined and elongated grains. Discontinuous precipitates appeared at previous grain boundaries (PGBs) and shear bands after deformation of 45 pct reduction. Transmission electron microscope (TEM) studies revealed that the transformation kinetics of both DO22 ordered phases and discontinuous precipitates were significantly accelerated by prior deformation, and the transformation from DO22 to Ll(2) ordering was suppressed to a certain degree. The maximum yield strength of the specimens with 45 pct reduction reached to about 1230 MPa after aging treatment, but the corresponding ductility was poor due to the rapid growth of discontinuous precipitates.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
