Effect of Transference Velocity on Structure of Porous Metals Fabricated by Continuous Casting Gasar Process
Transference velocity is an important processing parameter to influence the final lotus-type porous structure fabricated by continuous casting Gasar process. By solving the solute diffusion equation. a theoretical model was developed to predict the effect of the transference velocity on the porosity. the pore diameter and the inter-pore spacing. The predicted values at different transference velocities have a good agreement with the corresponding experimental results obtAlned by Japanese researcher. The average pore diameter and the inter-pore spacing L both have a prominent decrease with the increase of transference velocity v ,but the porosity only has a slight decrease. The theoretical relationships between the pore radius rs. the inter-pore spacing and the transference velocity can be described by the two simple equations as r1.72g·V=A and L1.72· V=B. whereA and B are all constants depending on the used gas pressures and the melt temperature.
porous metal metal-gas eutectic continuous casting transference velocity
Liu Yuan Zhang Xingming Li Yanxiang
Key Laboratory for Advanced Materials Processing Technology (Ministry of Education),Department of Mechanical Engineering. Tsinghua University. Beijing 100084. China
国际会议
69th World Foundry Congress(第69届世界铸造会议 WFC 2010)
杭州
英文
165-170
2010-10-16（万方平台首次上网日期，不代表论文的发表时间）