Microstructure of WE43 Magnesium Matrix Composite Reinforced Ceramic Particles

2013 ◽  
Vol 211 ◽  
pp. 101-108 ◽  
Author(s):  
Tomasz Rzychoń ◽  
Maciej Dyzia ◽  
Izabela Pikos
Keyword(s):  
Matrix Composite ◽  
Xrd Analysis ◽  
Stir Casting ◽  
Shrinkage Porosity ◽  
Magnesium Matrix Composite ◽  
Magnesium Matrix ◽  
Ceramic Particles ◽  
Specific Strength ◽  
The Matrix ◽  
Reinforcement Distribution

Magnesium alloys containing yttrium and neodymium are known to have high specific strength, good creep and corrosion resistance up to 523 K. The addition of ceramic particles strengthens the metal matrix composite resulting in better wear and creep resistance while maintaining good machinability. In the present study, WE43 magnesium matrix composite reinforced with SiC and carbon particulates were fabricated by stir casting. The microstructure of the composite was investigated by optical microscopy, quantitative metallography, scanning electron microscope and XRD analysis. Microstructure characterization of WE43 MMC showed inhomogeneous reinforcement distribution and presence of shrinkage porosity. Reinforcing particles are well bonded with the matrix, however, in some cases thin reaction layers was detected. The presence of SiC particles assisted in improving hardness.

Effect of Hot Extrusion on the Microstructure of In Situ TiB2 Particulate Reinforced Magnesium Matrix Composite

2011 ◽  
Vol 675-677 ◽  
pp. 473-476 ◽  
Author(s):  
N.N. Wu ◽  
C.F. Fang ◽  
Yun Bai ◽  
L.G. Meng ◽  
Hai Hao ◽  
...  
Keyword(s):  
Matrix Composite ◽  
Hot Extrusion ◽  
Magnesium Matrix Composite ◽  
Magnesium Matrix ◽  
The Matrix ◽  
Tib2 Particles ◽  
Deformation Modes ◽  
Particulate Reinforced ◽  
Main Deformation

The TiB2/AZ31 magnesium matrix composite was fabricated via self-propagating hightemperature synthesis (SHS) and then hot extruded. The influence of hot extrusion on the microstructure and property of TiB2/AZ31 composites was investigated. The results show that hot extrusion and synthesized TiB2 particles could refine the grain size obviously. The synthesized TiB2 particles are micro- and nano-sized, dispersing homogenously in the matrix. The interface between the matrix and the particles are good bonding. Meanwhile, slip and twinning are the main deformation modes during the hot extrusion. The fracture surface of hot-extruded TiB2/AZ31 magnesium matrix composite has more dimples than the as-cast AZ31 magnesium alloy. The improvement of microstructure seems to be beneficial for the fracture ductility of TiB2/AZ31 magnesium matrix composite.

In Situ TiB2 and Al2(Y, Gd) Particles Reinforced Magnesium Matrix Composite with Al-Ti-B Addition

2013 ◽  
Vol 312 ◽  
pp. 315-318 ◽  
Author(s):  
C.F. Fang ◽  
L.G. Meng ◽  
N.N. Wu ◽  
X.G. Zhang
Keyword(s):  
Mechanical Properties ◽  
Matrix Composite ◽  
Matrix Alloy ◽  
Tensile Tests ◽  
Solidification Structure ◽  
Magnesium Matrix Composite ◽  
Magnesium Matrix ◽  
Reinforced Composite ◽  
The Matrix

In-situ micro/nanosized TiB2 and Al2(Y, Gd) particles reinforced magnesium matrix composite was successfully fabricated by addition of Al-Ti-B preform into Mg-Gd-Y-Zn matrix alloy, its microstructures and properties were investigated. The results show that the introduction of Al-Ti-B preform causes the precipitation of Al2(Y, Gd) particles and the SHS synthesis of TiB2 particles which significantly refine solidification structure. The reinforced Al2(Y, Gd) particles with average sizes of 5-8 μm are uniformly distributed throughout the magnesium matrix, and have a good bond to the matrix. Tensile tests indicate that, compared with the former matrix alloy, mechanical properties of the multiple in-situ particles reinforced composite are improved all-roundly.

Effect of ECAP on the Microstructure and Tensile Property of SiCp/AZ91 Magnesium Matrix Composite

2007 ◽  
Vol 353-358 ◽  
pp. 1342-1345 ◽  
Author(s):  
Hai Chang ◽  
Xiao Jun Wang ◽  
Ming Yi Zheng ◽  
Kun Wu
Keyword(s):  
Elevated Temperature ◽  
Matrix Composite ◽  
Matrix Alloy ◽  
Grain Boundary Sliding ◽  
Ultimate Tensile Stress ◽  
Magnesium Matrix Composite ◽  
Magnesium Matrix ◽  
The Matrix ◽  
Az91 Magnesium ◽  
Sic Particle

Magnesium matrix composite reinforced with SiC particle was fabricated by compocasting method. The SiCp/AZ91 composite was extruded initially, then subjected to ECAP. The microstructure and tensile properties of the composite at ambient and elevated temperature were investigated. After ECAP, the matrix alloy was significantly refined due to the dynamic recrystallization occurred during ECAP. Both the ambient yield stress and ultimate tensile stress of SiCp/AZ91 were increased after 1-pass and 2-pass ECAP and decreased after 4-pass ECAP. The ECAP processed composite exhibited superplasticity at elevated temperature, which is mainly due to the grain refinement of matrix alloy. The dominant deformation mechanism of the ECAPed composite at high temperature was grain boundary sliding. However, the sliding was prohibited due to the present of SiC particle.

Tribological behavior of ZK60 magnesium matrix composite reinforced by hybrid MWCNTs/B4C prepared by stir casting method

2021 ◽  
pp. 107299
Author(s):  
Yashar Behnamian ◽  
Dominic Serate ◽  
Ermia Aghaie ◽  
Ramin Zahiri ◽  
Zachary Tolentino ◽  
...  
Keyword(s):  
Matrix Composite ◽  
Tribological Behavior ◽  
Stir Casting ◽  
Magnesium Matrix Composite ◽  
Casting Method ◽  
Magnesium Matrix

In vitro corrosion behavior and cytotoxicity property of magnesium matrix composite with chitosan coating

2015 ◽  
Vol 22 (3) ◽  
pp. 829-834 ◽  
Author(s):  
Yi-long Dai ◽  
Kun Yu ◽  
Liang-jian Chen ◽  
Chang Chen ◽  
Xue-yan Qiao ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Matrix Composite ◽  
Magnesium Matrix Composite ◽  
Magnesium Matrix ◽  
Chitosan Coating

Numerical Simulation on Thixo-Forging of Magnesium Matrix Composite

2011 ◽  
Vol 189-193 ◽  
pp. 2535-2538 ◽  
Author(s):  
Hong Yan ◽  
Wen Xian Huang
Keyword(s):  
Numerical Simulation ◽  
Matrix Composite ◽  
Metal Flow ◽  
Magnesium Matrix Composite ◽  
Magnesium Matrix ◽  
Simulation Based ◽  
Prior Literature ◽  
Simulation Results ◽  
Computer Numerical Simulation ◽  
Good Agreement

The thixo-forging of magnesium matrix composite was analyzed with computer numerical simulation based on rigid viscoplastic finite element method. The constitutive model of SiCp/AZ61 composite was established in our prior literature. Behavior of metal flow and temperature field were obtained. The differences between traditional forging and thixo-forging processes were analyzed. Results indicated that thixo-forging was better in filling cavity than forging. Simulation results were good agreement with experimental ones.

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