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您的检索式：作者名="HongshengDING"
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| 1 | Physical Simulation of Mold-Filling Processing of Thin-Walled Castings under Traveling Magnetic Field显示文摘Mold-filling process of thin-walled castings under the condition of traveling magnetic field has been studied by physical simulation method using gallium melt and fast speed photography. Flow morphology and its formation mechanism were obtained and discussed for thin-walled casting. The influences of magnetic field density on the filling ability,filling velocity and mold filling time have been studied. The differences in filling capability between gravity casting and casting under the traveling magnetic field have been compared. The results indicate that the mold filling ability of the gallium melt increases greatly under the condition of traveling magnetic field; the filling time is shortened from 18 s under gravity field to 3 s under the traveling magnetic field and average flow rate of the melt increases from 1.6to 8.68 cm3/s; the change law of the cross-section morphology of the gallium melt during the mold filling is that at first, the cross-section area does not change, then it decreases gradually. When the front of the melt reaches the end of the mold cavity, the front melt will backfill the mold; the wider the width of mold cavity, the better the mold filling ability. The mold filling ability of gallium melt in mold with upper magnetic conductor is better than that without upper magnetic conductor. | YanqingSU TiejunZHANG JingjieGUO HongshengDING WeishengBI JunJIA HengzhiFU | 2004 | Journal of Materials Science & Technology2004，20，1： | 6 |
| 2 | Effect of Processing Parameters on Microstructures of Melt-Spun Al-In Immiscible Alloys显示文摘Melt spinning rapid solidification technique was employed to fabricate homogeneous Al-In immiscible alloys and theirfinal microstructures and morphologies were investigated. There existed a transition of columnar Al grain→ equiaxedgrain for the thicker ribbon, but only columnar Al grain for the thinner ribbon throughout the thickness. In thecolumnar grain field, most of the fine In particles was distributed within the cells, but a minority of bigger In particlesor short rods was perpendicularly distributed at the grain boundaries. In the equiaxed grain field, the fine In particleswere located in Al grains and coarser particles were situated at the boundaries. The average particle size increasedwith increasing distance from the chilled surface throughout the ribbon. At the same wheel speed (same coolingrate), the average particle size increased with raising In content. At the same composition condition, the averageparticle size decreased with increasing wheel speed and/or decreasing ejection temperature. | YuanLIU JingjieGUO YanqingSU HongshengDING JunJIA | 2002 | Journal of Materials Science & Technology2002，18，5： | 0 |
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