Effect of Ni Content on Pore Structure of Porous Cu-Ni Alloys with the Gasar Continuous Casting Process

Author of the article:JIN Qinglin 1 , LIU Endian 1 , LI Zaijiu 1,2 , LI Fei 1,3

Author's Workplace：1. School of Materials Science and Engineering, Kunming University of Science and Technology; 2. School of Civil Aviation and Aeronautics, Kunming University of Science and Technology; 3. City College, Kunming University of Science and Technology

Key Words： porous metal; Gasar continuous casting process; Cu-Ni alloys; mushy zone; solidification mode

Abstract：The lotus-type porous Cu-Ni alloy was prepared with Cu-Ni alloy samples with different Ni content in Gasar
continuous casting device. The effect of Ni content on the pore structure of the samples was studied. The results show that
low Ni content has little effect on pore structure, while with the further increase of Ni content, the regularity and uniformity
of pore structure of porous Cu-Ni alloy gradually deteriorate. The change of solidification mode and the increase of mushy
zone width are the main reasons for the change of pore structure in porous Cu-Ni alloy.