scholarly journals Preparation and Characterization of Magnesium Alloy Containing Al2Y Particles

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1748 ◽  
Author(s):  
Zhongtao Jiang ◽  
Jun Feng ◽  
Qiaowang Chen ◽  
Shan Jiang ◽  
Jiahong Dai ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Hot Extrusion ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Ambient Temperatures ◽  
Al Content ◽  
Precipitated Phase ◽  
Almost All

A magnesium alloy containing Al2Y particles was successfully fabricated by changing the content of Al in the Mg-6Y alloy melt. Its microstructure and mechanical properties were subsequently characterized. The results show that two types of Al2Y particles were discovered in the Mg-6Y-xAl (x = 0.5–5) alloys, which are namely the polygonal particles in the pre-precipitated phase and the discontinuous network of particles in the eutectic phase. With an increase in Al content, the amount of pre-precipitated Al2Y increases and the eutectic decreases gradually. When the Al content is 5 wt %, Al2Y particles are almost all in the pre-precipitated phase in the Mg-6Y alloy. After hot extrusion, the YA65 alloy could be regarded as the Mg master alloy that contains Al2Y particles with heterogeneous nucleation capability or Al2Y particle-reinforced magnesium matrix composites. The tensile strength of the as-extruded magnesium alloy is significantly improved at ambient temperatures.

Fabrication and characterization of AZ91/CNT magnesium matrix composites

2008 ◽  
Author(s):  
Yong-Ha Park ◽  
Yong-Ho Park ◽  
Ik-Min Park ◽  
Jeong-jung Oak ◽  
Hisamichi Kimura ◽  
...  
Keyword(s):  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Fabrication And Characterization

scholarly journals Microstructural Characterization of Cast Magnesium Matrix Composites by Raman Microscopy

2013 ◽  
Vol 13 (1) ◽  
pp. 95-98 ◽  
Author(s):  
M.A. Malika ◽  
K. Majchrzak ◽  
K.N. Braszczyńska-Malik
Keyword(s):  
Silicon Carbide ◽  
Microstructural Characterization ◽  
Raman Microscopy ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Silicon Carbide Particles ◽  
Cast Magnesium ◽  
Carbide Particles

Abstract Cast magnesium matrix composites reinforced with silicon carbide particles were investigated by using Raman microscopy. 3C, 4H and 6H polytypes of SiC particles were identified in the investigated composites. Additionally, Mg2Si compound was detected by Raman microscopy in the composites microstructure.

scholarly journals Types of Component Interfaces in Metal Matrix Composites on the Example of Magnesium Matrix Composites

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5182
Author(s):  
Katarzyna N. Braszczyńska-Malik
Keyword(s):  
Rare Earth ◽  
Magnesium Alloy ◽  
Rare Earth Elements ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Transmission Electron ◽  
The Matrix ◽  
Ti Particles ◽  
Cast Magnesium

In this paper, a summary of investigations of the microstructure of cast magnesium matrix composites is presented. Analyses of the interfaces between the reinforcing particles and the magnesium alloy matrices were performed. Technically pure magnesium and four various alloys with aluminum and rare earth elements (RE) were chosen as the matrix. The composites were reinforced with SiC and Ti particles, as well as hollow aluminosilicate cenospheres. Microstructure analyses were carried out by light, scanning, and transmission electron microscopy. The composites with the matrix of magnesium and magnesium–aluminum alloys with SiC and Ti particles exhibited coherent interfaces between the components. In the composites based on ternary magnesium alloy with Al and RE with Ti particles, a high-melting Al2RE phase nucleated on the titanium. Different types of interfaces between the components were observed in the composites based on the magnesium–rare earth elements alloy with SiC particles, in which a chemical reaction between the components caused formation of the Re3Si2 phase. Intensive chemical reactions between the components were also observed in the composites with aluminosilicate cenospheres. Additionally, the influence of coatings created on the aluminosilicate cenospheres on the bond with the magnesium matrix was presented. A scheme of the types of interfaces between the components is proposed.

Synthesis and Characterization of In Situ AlN Reinforced Magnesium Matrix Composites

2012 ◽  
Vol 710 ◽  
pp. 377-382
Author(s):  
Sreeja Kumari Sukumaran Suseelammaa ◽  
Uma Thanu Subramonia Pillai ◽  
Sujayakumar Prasanth ◽  
Bellampettu Chandrasekhar Pai
Keyword(s):  
Grain Size ◽  
Xrd Analysis ◽  
Synthesis And Characterization ◽  
Matrix Composites ◽  
Nitrogen Gas ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Gas Bubbling

In situ Mg-AlN composite has been synthesized by nitrogen gas bubbling method. The morphology of the particles is found to be hexagonal by SEM. The size of the AlN particles is found to be in the range from nano, submicron to a few microns. XRD analysis of the samples confirms the formation of AlN in the melt. Further, the grain size of the magnesium matrix has been reduced by the presence of AlN particles. Hardness of the composite is significantly increased in the particle rich area due to the presence of hard AlN particles.

Production and Structural Characterization of Some Magnesium Matrix Composites Reinforced with Amorphous/Nanocrystalline NiTi Particulates

2019 ◽  
Vol 69 (12) ◽  
pp. 3503-3507
Author(s):  
Mariana Ciurdas ◽  
Daniela Alina Necsulescu ◽  
Cristian Mircea Pantilimon ◽  
Vasile Ion ◽  
Magdalena Galatanu ◽  
...  
Keyword(s):  
High Energy ◽  
Amorphous Structure ◽  
Planetary Mill ◽  
Matrix Composites ◽  
X Ray Diffraction ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
The Matrix ◽  
Titanium Powders

Two mixtures of elemental nickel and titanium powders in atomic proportions of 50% Ni + 50% Ti and 32% Ni + 68% Ti, respectively, were ground for 40 hours in a high energy planetary mill. In the case of the first mixture, the mechanical alloying was totally produced, while for the second, the alloying was partial. In both mixtures, qualitative X-ray diffraction phase analysis revealed the presence of metastable phases, such as Ni HC and NiTi- R-phase. Also, the equiatomic mixture is characterized by a partially amorphous structure. 10% of each type of mixture submitted to milling was used as reinforcing element in the form of particulates for two magnesium matrix composites. They were obtained by sintering in the plasma at 590�C. In the case of the reinforced with the second mixture composite, the production of new phases other than the matrix and those present in the mixture of nickel and titanium powders after milling were recorded. The electron microscopy images of the two composites have resistant, free of micropores or microcracks matrix / particulates interfaces. The Mg-10% (32 at% Ni + 68 at% Ti) composite is characterized by Vickers hardness higher than that of the composite reinforced with the equiatomic mixture.

scholarly journals Synthesis and Characterization of Sintered AZ91D Magnesium Matrix Composites Reinforced with Red Mud particles

2016 ◽  
Vol 13 (2) ◽  
pp. 95-100 ◽  
Author(s):  
D Rajamani ◽  
A. Tamilarasan ◽  
Balasubramanian Esakki ◽  
K Ananthakumar
Keyword(s):  
Red Mud ◽  
Low Cost ◽  
Microstructural Characterization ◽  
Matrix Composites ◽  
Az91d Alloy ◽  
Test Results ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Alloy Metal

Magnesium AZ91D alloy is reinforced with red mud particles, is the by-product of alumina which is extracted from refining of bauxite throughbayer process to fabricate low cost novel composite by powder metallurgy technique. Reinforcement ratio was varied from 0% to 15% whereas size of the particles were kept as 30µm.The microstructure and mechanical properties such as density and microhardness of the composite were evaluated. Microstructural characterization of the sintered composite revealed a near uniform distribution of the red mud particulates with magnesium alloy metal matrix.The test results indicated that the increase in weight % of red mud particles significantly enhances the mechanical propertiesof the composite.

In Situ Fabrication and Properties of Mg2Si/AZ91D Magnesium Matrix Composites

2010 ◽  
Vol 150-151 ◽  
pp. 1640-1643 ◽  
Author(s):  
Xiao Ying Wang ◽  
Yu Tao Zhao ◽  
Gang Chen ◽  
Song Li Zhang ◽  
Xiao Nong Cheng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Magnesium Alloy ◽  
Matrix Alloy ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Reaction Method ◽  
Magnesium Matrix Composites ◽  
Az91d Magnesium Alloy

Mg2Si/AZ91D magnesium matrix composites are fabricated from AZ91D-Al2(SiO3)3 system by direct melt reaction method. The effects of the variation Al2(SiO3)3 addition contents to the microstructures and mechanical properties of the composites are investigated. The results show that the amounts of Mg2Si particles are increased and the structures of AZ91D magnesium alloy are refined with the Al2(SiO3)3 content increasing. When the additional content of Al2(SiO3)3 is 3wt.%, the tensile strength of the composite reaches 178.6MPa, which is increased by nearly 14.5% than that of AZ91D matrix alloy.

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