The Role of Lattice Misfit on Heterogeneous Nucleation of Pure Aluminum

2016 ◽  
Vol 47 (10) ◽  
pp. 5012-5022 ◽  
Author(s):  
L. Wang ◽  
L. Yang ◽  
D. Zhang ◽  
M. Xia ◽  
Y. Wang ◽  
...  
Keyword(s):  
Heterogeneous Nucleation ◽  
Pure Aluminum ◽  
Lattice Misfit

The Formation Mechanism of Equiaxed Crystals in Pure Aluminum Solidification Structure under the Al-Ti-C Master Alloy

2013 ◽  
Vol 668 ◽  
pp. 865-869
Author(s):  
Wan Wu Ding ◽  
Wen Jun Zhao ◽  
Tian Dong Xia
Keyword(s):  
Transition Zone ◽  
Formation Mechanism ◽  
Master Alloy ◽  
Heterogeneous Nucleation ◽  
Pure Aluminum ◽  
Solidification Structure ◽  
Impact Mechanism ◽  
Tic Particle ◽  
The Impact

The influence of different solidified velocities on the structure of pure aluminum during the process of refinement by Al-5Ti-0.6C master alloy was studied and the impact mechanism was discussed. The results show that at the same solidified velocity, with the increase of the amount of Al-5Ti-0.6C master alloy, in the solidified structure of pure aluminum, columnar crystals will gradually decrease, while equiaxed crystals will gradually increase. But in the case when the level of addition is the same, the faster the solidified velocity, the greater the number of equiaxed crystals will be in the ingot microstructure. The formation of equiaxed crystals is the result of the dual role of dissociation of crystal particles and heterogeneous nucleation of “TiC particle---Ti transition zone”.

An Investigation on Grain Refinement Mechanism of Master Alloys Al-Ti, Al-TiC and Al-Ti-C Toward Pure Aluminum

2013 ◽  
Vol 652-654 ◽  
pp. 1072-1075 ◽  
Author(s):  
Wan Wu Ding ◽  
Jiang Tao Zhu ◽  
Wen Jun Zhao ◽  
Tian Dong Xia
Keyword(s):  
Grain Refinement ◽  
Heterogeneous Nucleation ◽  
Pure Aluminum ◽  
Grain Refining ◽  
Nucleation Effect ◽  
Commercially Pure ◽  
Master Alloys ◽  
Refinement Mechanism ◽  
Heat Preservation

The grain refining effects of Al-Ti, Al-TiC and Al-Ti-C master alloys on commercially pure aluminum were compared, and the grain refinement mechanism of TiAl3 and TiC among master alloys was discussed. The results show that: the grain refinement of the master alloys Al-TiC and Al-Ti toward pure aluminum mainly stems from the heterogeneous nucleation role of TiC and TiAl3 particles, but with the extension of heat preservation time of fused mass, its role of heterogeneous nucleation will decline due to dissolution of TiAl3 and aggregation and precipitation of TiC. The preferable grain refinement effects of Al-Ti-C master alloys toward pure aluminum are mainly due to the fact that when TiAl3 and TiC particles are acted commonly as heterogeneous nucleation particles, the heterogeneous nucleation effect of TiC particles will be enhanced because of the presence of TiAl3.

Role of surface structure in heterogeneous nucleation

2004 ◽  
Vol 47 (14-16) ◽  
pp. 3097-3107 ◽  
Author(s):  
Yusen Qi ◽  
James F. Klausner ◽  
Renwei Mei
Keyword(s):  
Surface Structure ◽  
Heterogeneous Nucleation

The role of texture in the electromigration behavior of pure aluminum lines

1996 ◽  
Vol 79 (5) ◽  
pp. 2409-2417 ◽  
Author(s):  
D. B. Knorr ◽  
K. P. Rodbell
Keyword(s):  
Pure Aluminum

The Role of Heterogeneous Nucleation in the Activation of Blood Cells

2020 ◽  
Vol 62 (1) ◽  
pp. 17-23
Author(s):  
I. V. Prikhodko ◽  
G. T. Guria
Keyword(s):  
Heterogeneous Nucleation ◽  
Blood Cells

Heterogeneous nucleation of pure gold on highly smooth ceramic substrates and the influence of lattice misfit and cooling rate

2017 ◽  
Vol 53 (6) ◽  
pp. 4612-4622 ◽  
Author(s):  
C. Sheng ◽  
J. Sun ◽  
D. P. Wang ◽  
Y. H. Zhang ◽  
L. J. Li ◽  
...  
Keyword(s):  
Cooling Rate ◽  
Heterogeneous Nucleation ◽  
Lattice Misfit ◽  
Pure Gold ◽  
Ceramic Substrates

Role of interfacial interaction on the crystallization behavior and melting characteristics of PP/Nano-CaCO3 composites modified with different compatibilizers

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Yuhai Wang ◽  
Hao Shen ◽  
Gu Li ◽  
Kancheng Mai
Keyword(s):  
Synergistic Effect ◽  
Heterogeneous Nucleation ◽  
Crystallization Temperature ◽  
Crystallization Behavior ◽  
Crystallization Rate ◽  
Interfacial Interaction ◽  
Scanning Calorimetry ◽  
Polar Groups ◽  
Melting Characteristics

AbstractPP/nano-CaCO3 composites with different interfacial interaction were prepared by addition of compatibilizers with the same polar groups but different backbones. The non-isothermal and isothermal crystallization behavior of PP/nano- CaCO3 composites was investigated using differential scanning calorimetry (DSC). The results indicated that the interfacial interaction between PP and nano-CaCO3 increased the crystallization temperature and crystallization rate of PP due to the heterogeneous nucleation of nano-CaCO3. The interfacial interaction between nano- CaCO3 and compatibilizer further increased the crystallization temperature and crystallization rate of PP and induced the formation of β-crystal of PP due to the synergistic effect of heterogeneous nucleation between nano-CaCO3 and compatibilizer. This synergistic effect of heterogeneous nucleation between nano- CaCO3 and compatibilizer depended on the interfacial interaction between compatibilizer and PP matrix. The increased compatibility between compatibilizer and PP matrix favoured the heterogeneous nucleation between nano-CaCO3 and compatibilizer

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