Effects of temperature field and SiC nanoparticles on microstructure and mechanical properties of n-SiCp/Mg-9% Al composites fabricated by ultrasonication-assisted semi-solid hot pressing of powder

2019 ◽  
Author(s):  
Ming Li ◽  
Zhiwei Huang ◽  
Gaozhan Zhao ◽  
Hongxia Wang ◽  
Jianquan Tao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Temperature Field ◽  
Hot Pressing ◽  
Sic Nanoparticles ◽  
Microstructure And Mechanical Properties ◽  
Effects Of Temperature ◽  
Semi Solid

Microstructure and mechanical properties of TiB2-B4C ceramics fabricated by hot-pressing

2021 ◽  
Author(s):  
Daimeng Chen ◽  
Kuibao Zhang ◽  
Jianjun Zeng ◽  
Haiyan Guo ◽  
Bo Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hot Pressing ◽  
Microstructure And Mechanical Properties

Microstructure and Mechanical Properties of Mg-6Zn-1.4Y Alloy Produced by Rheo-Squeeze Casting Process

2016 ◽  
Vol 879 ◽  
pp. 530-535
Author(s):  
Xiao Gang Fang ◽  
Shu Sen Wu ◽  
Shu Lin Lü
Keyword(s):  
Mechanical Properties ◽  
Power Density ◽  
Squeeze Casting ◽  
Casting Process ◽  
Acoustic Power ◽  
Icosahedral Quasicrystal ◽  
Microstructure And Mechanical Properties ◽  
Average Grain Size ◽  
Grain Size And Shape ◽  
Semi Solid

Mg-Zn-Y alloys containing a thermally stable icosahedral quasicrystal phase (I-phase) will have wide application future on condition that primary α-Mg dendrite and the I-phase can be refined during the casting process. In this research, the microstructure and mechanical properties of the rheo-squeeze casting (RSC) Mg-6Zn-1.4Y alloys have been investigated. The Mg alloy melt was exposed to ultrasonic vibration (USV) with different acoustic power densities from 0 W/mL to 9 W/mL, and then the slurry was formed by squeeze casting. The results show that good semi-solid slurry with fine and spherical α-Mg particles could be obtained with the acoustic power density of 6 W/mL, and the average grain size and shape factor of primary α-Mg were 32 μm and 0.76, respectively. Meanwhile the coarse eutectic I-phase (Mg3Zn6Y) was refined obviously and dispersed uniformly. Compared with the samples without USV, the tensile strength and elongation of the RSC casting samples with 6 W/mL acoustic power density were elevated by 10.6% and 55.5%, respectively.

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