FABRICATION OF LOTUS-TYPE POROUS Cu-Zn ALLOYS WITH THE GASAR CONTINUOUS CASTING PROCESS
Received date: 2012-12-07
Revised date: 2013-04-05
Online published: 2013-06-11
A continuous casting technique was developed to fabricate lotus-type porous alloys. Lotus-type porous Cu-xZn (x=2, 6, 10, mass fraction,%) alloys were successfully fabricated by using the continuous casting technique under a hydrogen gas pressure of 0.6 MPa at various transference velocities. The effects of transference velocity and Zn contents on the porosity and pore diameter were investigated. It shows that, for the porous Cu-2Zn alloy, an increased transference velocity will result in a slightly increased porosity and a decreased average pore diameter. Addition of Zn into pure Cu, on the other hand, will result in an increased average pore diameter. Nevertheless, the pore morphology becomes more and more inhomogeneous with increasing Zn content, and the porosity tends to firstly decrease and then increase. Such tendencies are correlated with the Zn content and the corresponding width of the mushy zone.
LI Zaijiu , JIN Qinglin , YANG Tianwu , JIANG Yehua , ZHOU Rong . FABRICATION OF LOTUS-TYPE POROUS Cu-Zn ALLOYS WITH THE GASAR CONTINUOUS CASTING PROCESS[J]. Acta Metall Sin, 2013 , 49(6) : 757 -762 . DOI: 10.3724/SP.J.1037.2012.00723
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