Mechanical properties, phase transitions, and fragmentation mechanisms of 6H, 3C, and amorphous SiC nanoparticles under compression

2021 ◽  
Vol 127 (12) ◽  
Author(s):  
Kevin W. Kayang ◽  
Alexey N. Volkov
Keyword(s):  
Mechanical Properties ◽  
Phase Transitions ◽  
Sic Nanoparticles ◽  
Fragmentation Mechanisms ◽  
Amorphous Sic

Investigation on mechanical properties of silicon nitride composite reinforced by SiC nanoparticles

2012 ◽  
Vol 46 (26) ◽  
pp. 3321-3324 ◽  
Author(s):  
Ningbo Liao ◽  
Guang Ma ◽  
Miao Zhang ◽  
Wei Xue
Keyword(s):  
Mechanical Properties ◽  
Silicon Nitride ◽  
Sic Nanoparticles

Processing and Microstructure Characteristics of As-Cast A356 Alloys Manufactured via Ultrasonic Cavitation during Solidification

2017 ◽  
Vol 36 (4) ◽  
pp. 381-387 ◽  
Author(s):  
Yang Xuan ◽  
Shian Jia ◽  
Laurentiu Nastac
Keyword(s):  
Mechanical Properties ◽  
A356 Alloy ◽  
Matrix Alloy ◽  
Ultrasonic Cavitation ◽  
Solidification Processing ◽  
Sic Nanoparticles ◽  
Nanoparticle Distribution ◽  
Microstructure Characteristics ◽  
The Matrix ◽  
Cast Microstructure

AbstractRecent studies have showed that the microstructure and mechanical properties of A356 alloy can be significantly improved when ultrasonic cavitation and solidification processing is used. This is because during the fabrication of A356 castings, ultrasonic cavitation processing plays an important role in degassing and refining the as-cast microstructure. In the present study, A356 alloy and Al2O3/SiC nanoparticles are used as the matrix alloy and the reinforcements, respectively. Nanoparticles are injected into the molten alloy and dispersed by ultrasonic cavitation. Ultrasonic cavitation was also applied during solidification of these nanocomposites. The microstructure and nanoparticle distribution of the cast samples have been investigated in detail. The current experimental results indicated that ultrasonic cavitation during solidification will greatly improve the microstructure of the samples. Al2O3 and SiC nanoparticle reinforced nanocomposites have different nanoparticle distributions in the matrix.

Upshot of Ultrasonic Amplitude on Developing the AA6061/SiC Metal Matrix Nanocomposites

2015 ◽  
Vol 787 ◽  
pp. 558-562
Author(s):  
L. Poovazhagan ◽  
K. Kalaichelvan ◽  
V.R. Balaji ◽  
P. Haripriya ◽  
S.C. Amith
Keyword(s):  
Mechanical Properties ◽  
Significant Role ◽  
Metal Matrix ◽  
Casting Process ◽  
Ultrasonic Cavitation ◽  
Sic Nanoparticles ◽  
Metal Matrix Nanocomposites ◽  
Good Dispersion ◽  
Matrix Nanocomposites

In this work, AA6061/1.25 vol. % SiCp metal matrix nanocomposites (MMNCs) were fabricated using the ultrasonic cavitation assisted casting process. To investigate the effect of ultrasonic amplitudes on processing the MMNCs, the MMNC samples were processed with 15 µm, 30 µm and 50 µm of ultrasonic amplitudes. The results indicate that the ultrasonic amplitudes play a significant role in dispersing the SiC nanoparticles uniformly in the AA6061 melt and it also affecting the mechanical properties of the fabricated MMNCs. The AA6061/1.25 vol. % SiCp MMNC sample processed with 30 µm of ultrasonic amplitude possessed the good dispersion of SiCp in the Al melt and hence better mechanical properties compared to the MMNCs processed with 15 µm and 50 µm amplitudes.

Preparation and Mechanical Properties of Nano-SiCp/Mg Composites by Ultrasonic Dispersion

2010 ◽  
Vol 150-151 ◽  
pp. 792-795 ◽  
Author(s):  
Hong Yan ◽  
Zhi Hu
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Ultrasonic Method ◽  
Fracture Morphology ◽  
Dispersion Strengthening ◽  
Ultrasonic Dispersion ◽  
Sic Nanoparticles ◽  
The Matrix ◽  
Dislocation Strengthening ◽  
Magnesium Composites

SiC nanoparticles reinforced AZ61 magnesium composites were fabricated by Ultrasonic method. The distribution of nanoparticles in the matrix and the fracture morphology of the composites were observed by SEM, and the mechanical properties of the composites were tested at room temperature. Experimental shows that SiC nanoparticles were dispersed well in the matrix with the pretreatment method. Compared with the matrix, the tensile strength and hardness of the composites were improved respectively. Meanwhile, the ductility of the composites didn’t be obviously decreased. The enhancement function of nano composites was predicted with the dislocation strengthening and Orowan dispersion strengthening mechanisms. The predicted results coincided well with experimental ones.

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