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Characterization of cooling rate and microstructure of Cu Sn melt droplet in drop on demand process 被引量:1
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作者 Yi Xu N. ELLENDT +2 位作者 Xing-gang LI V. uHLENWINKEL u. fritsching 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2017年第7期1636-1644,共9页
Different sized single droplets of Cu-6%Sn alloy were prepared by drop on demand(DOD)technique.The secondarydendrite arm spacing was measured and correlated with the droplet cooling rate by a semi-empirical formula.Th... Different sized single droplets of Cu-6%Sn alloy were prepared by drop on demand(DOD)technique.The secondarydendrite arm spacing was measured and correlated with the droplet cooling rate by a semi-empirical formula.The microstructure ofdroplets was observed by optical microscopy(OM)and electro backscatter diffraction(EBSD).The dendrite feature of singledroplets depends on solidification rate,cooling medium and flight distance.When droplets collide with each other at temperaturesbetween solidus and liquidus,the dendrites and grains are refined obviously possibly because the collision enhances the heat transfer.The cooling rate of colliding droplets is estimated to be more than4×104K/s based on a Newton’s cooling model.The dendritesgrow along the colliding direction because of the temperature gradient induced by the internal flow inside the droplets. 展开更多
关键词 impinging droplet secondary dendrite arm spacing cooling rate heat transfer drop on demand
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Corrigendum to “Characterization of cooling rate and microstructure of CuSn melt droplet in drop on demand process” [Trans. Nonferrous Met. Soc. China 27 (2017), 1636.1644]
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作者 Yi Xu N. ELLENDT +2 位作者 Xing-gang LI V. uHLENWINKEL u. fritsching 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2017年第9期2112-2112,共1页
In the printed contribution some basic modeling equations for the droplet behavior have not been given correctly. The authors apologize for this error. The computational model used to derive the results discussed in t... In the printed contribution some basic modeling equations for the droplet behavior have not been given correctly. The authors apologize for this error. The computational model used to derive the results discussed in the paper is based on a thermal and a kinetic model for single droplet behavior in flight. The corrections are as follows. 展开更多
关键词 printed contribution DROPLET behavior
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