Carbon solubility in Cu-based composite prepared by mechanical alloying

• Published in: Transactions of Nonferrous Metals Society of China Vol. 16; no. A02; pp. 107 - 111
• Main Author: 冉旭 刘勇兵 包晓军 刘学然 安健
• Format: Journal Article
• Language: English
• Published: Earthquake Administration of Jilin Province, Changchun 130022, China 01.09.2006; Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering; Department of Materials Science and Engineering, Changchun Institute of Technology, Changchun 130012,China%Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering; Jilin University, Changchun 130025, China; Jilin University, Changchun 130025, China%Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering
• Subjects: 机械合金化; 碳溶解度; 过饱和固溶体; 铜基复合材料; supersaturated solid solution; mechanical alloying; Cu-C system
• ISSN: 1003-6326

The powder mixture of Cu and graphite was mechanically alloyed （MA） in an oscillating type ball mill. The milling time was varied in order to investigate its influence on the microstructural evolution of mechanically alloyed powders. The phase constituent, alloying characteristics, grain size and lattice distortion of these powders were determined by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. The results show that the C is confirmed to dissolve in the Cu lattice, forming solid solution of carbon in copper the lattice parameter of copper increases with carbon concentration increasing, up to a saturation value of about 4%C（mass fraction）. Higher ball-mill energy is beneficial for twins and nanograin formation.