Preparation and Characteriziation of Cu-Cr Alloy Powders
Cu-1.37Cr alloy powders were prepared by gas atomization process,and the cooling rates of alloy powders were calculated through the convection heat transfer principle.The morphology,distribution of alloy elements and microstructure of Cu-1.37Cr alloy powders were characterized by X-ray diffractometer and Scanning Electron Microscope (SEM).The results show that the cooling rate increases from 9.75× 103 to 1.08× 105 K/s as grain size decreases from 150 to 45μm.The morphology of alloy powders are spherical or similar spherical shape along with smooth surfaces.The grains have uniform size,and Cr particles are uniformly distributed in Cu matrix.With decrease of particle sizes,the diffraction angle shifts into small angle,suggesting that the larger solubility of Cr in Cu phase.
Gas Atomization Cu-Cr Alloy Powders Cooling Rate
Peng Xiao Xiaoyu Zhang Hongwei Lu
School of Materials Science and Engineering,Xian University of Technology,Xian 710048,China
国际会议
沈阳
英文
60-64
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）