Influence of Injection Velocity on Morphology and Fraction of Solid Phase During Thixomolding Process


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During Thixomolding process, solid phase fraction decreased with the injection velocity increasing. Meanwhile, the solid phase morphology changed from irregular dendrite to near spherical. Friction heat produced by high speed melt flow could cause partial melt of solid phase, and the morphology of solid phase would form into globular. The dendritic solid phase can be broken by high speed melt flow under the condition of injection velocity higher than 2.0m/s.



Advanced Materials Research (Volumes 503-504)

Edited by:

Wen-Pei Sung, Jimmy Chih-Ming Kao and Ran Chen




X. P. Cui et al., "Influence of Injection Velocity on Morphology and Fraction of Solid Phase During Thixomolding Process", Advanced Materials Research, Vols. 503-504, pp. 90-94, 2012

Online since:

April 2012




[1] F. Czerwinski, Size Evolution of the Unmelted Phase during Injection Molding of Semisolid Magnesium Alloys, Scripta Materialia 48 (2003) 327-331.


[2] F. Czerwinski, A. Zielinska-lipiec, P. J. Pinet, et al. Properties Of A Thixomolded AZ91D Magnesium Alloy, Acta mater. 49 (2001) 1225–1235.


[3] F. Czerwinski, Magnesium alloy particulates for Thixomolding Applications Manufactured by Rapid Solidification, Materials Science and Engineering A 367 (2004) 261–271.


[4] F. Czerwinski. The processing phenomena of semisolid Mg-9%Al-1%Zn alloy at ultra high contents of the unmelted phase. Materials Science and Engineering A, 392 (2005) 51-61.


[5] Cui Xiaopeng, Liu Haifeng, Liu Yong-bing. Melting Behavior of Magnesium Alloy Chips in Thixomolding Process. Trans. Nonferrous Met. Soc. China, 17 (2007) s385-s390.

[6] Xiaopeng Cui, Yongbing Liu, Zhanyi Cao, Youfa Zhang, Qianqian Zhang. Microstructure Evaluate System of Semi-Solid Forming. Materials Science Forum, 546-549 (2007) 93-96.


[7] J. Pilling, A. Hellawell. Mechanical Deformation of Dendrites by Fluid Flow. Metallurgical and Materials Transaction A. 27(1996) 227-235.


[8] Cui Xiaopeng, Liu Yongbing, Cao Zhanyi, Yang Xiaohong, Liang Wei. Influence of Process Conditions of Thixomolding® on the Microstructure of Magnesium Mobile Phone Housing. Materials Science Forum, 488-489 (2005) 377-380.