Phase separation and structure evolution of ternary Al–Cu–Sn immiscible alloy under ultrasonic levitation condition

2012 ◽  
Vol 544 ◽  
pp. 6-12 ◽  
Author(s):  
N. Yan ◽  
Z.Y. Hong ◽  
D.L. Geng ◽  
W.L. Wang ◽  
B. Wei
Keyword(s):  
Phase Separation ◽  
Structure Evolution ◽  
Immiscible Alloy

Instantaneous Phase Separation at the Contact Surface in Compression Molding of Immiscible Polymer Blend

2010 ◽  
Author(s):  
Wei Zhang ◽  
Min Li ◽  
Sarang Deodhar ◽  
Donggang Yao ◽  
Jack G. Zhou
Keyword(s):  
Phase Separation ◽  
Compression Ratio ◽  
Contact Surface ◽  
Phase Structure ◽  
Compression Molding ◽  
Continuous Phase ◽  
Structure Evolution ◽  
Compression Rate ◽  
Mold Surface ◽  
Immiscible Polymer

Immiscible polymer blends with a co-continuous phase structure (CPS) can yield synergistic material properties. In this study, a 50/50 wt% PLA/PS blend with CPS was used as a model system to explore the influence of compression molding conditions (including compression rate, compression ratio, and mold surface characteristics) on the final phase structure of the molded part. The microscopic characterization clearly demonstrated the instantaneous formation of a PLA rich layer at the mold contact surface when a high compression ratio and fast compression rate were applied during molding. CFD simulations were performed to numerically study the effects of compression on phase structure evolution in binary blends. If harnessed appropriately, this phase separation process may be utilized for creating innovative material structures.

Direct observation of the segregation driven by bubble evolution and liquid phase separation in Al–10 wt.% Bi immiscible alloy

2015 ◽  
Vol 102 ◽  
pp. 19-22 ◽  
Author(s):  
Wenquan Lu ◽  
Shuguang Zhang ◽  
Wei Zhang ◽  
George Kaptay ◽  
Jianding Yu ◽  
...  
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Direct Observation ◽  
Liquid Phase Separation ◽  
Immiscible Alloy ◽  
Bubble Evolution
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