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.

Microstructure and Mechanical Properties of AIN Particles Reinforced Magnesium Matrix Composites with In Situ Synthesis Process

2016 ◽  
Vol 256 ◽  
pp. 181-185
Author(s):  
Zhao Hui Wang ◽  
Bo Li ◽  
Xian Du ◽  
Ke Liu ◽  
Shu Bo Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructural Analysis ◽  
Matrix Alloy ◽  
Strengthening Mechanism ◽  
Synthesis Process ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
The Matrix

In this paper, In Situ AlN particles reinforced magnesium matrix composites were fabricated. The results show that the AlN phases can be In Situ synthesized in AZ91D alloy with the addition of Mg3N2. The microstructure and phases of the matrix alloys and the composites were investigated by OM, SEM and XRD. The hardness and mechanical properties of the matrix alloys and the composites were also obtained. Compared with those of the matrix alloy, the grains of composites were refined obviously and the mechanical properties of composites were improved significantly. The microstructural analysis indicates that the AlN particles can act as the heterogeneous nucleation of α-Mg phases in the composites. The strengthening mechanism of the composites with AlN particles was discussed.

Mechanical Behavior of CNTs/SiCp/AZ91D Magnesium Matrix Composites

2011 ◽  
Vol 694 ◽  
pp. 635-639 ◽  
Author(s):  
Wei Xue Li ◽  
Yun Feng Nie ◽  
Dun Dong Wang
Keyword(s):  
Mechanical Properties ◽  
Casting Process ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Matrix Composites ◽  
Micro Hardness ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Resistance To Deformation ◽  
The Matrix

AZ91D alloy composites reinforced by CNTs/SiCp were fabricated using stir casting process. The mechanical properties of the composites were tested, observed and analyzed the microstructure, the fractographs were observed and analyzed via scanning electron microscope. The results showed that CNTs/SiCp could not only refine the grains of the composites, but also bear the load of resistance to deformation. Compared with the matrix alloy, the tensile strength, the elastic modulus, the micro-hardness and the elongation rate of the composites had been enhanced significantly. But the mechanical properties would be fell down with the more addition of CNTs/SiCp.

MECHANICAL PROPERTIES OF SQUEEZE INFILTRATED AS52 MAGNESIUM MATRIX COMPOSITES

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1510-1515 ◽  
Author(s):  
YONG-HA PARK ◽  
YONG-HO PARK ◽  
IK-MIN PARK ◽  
KYUNG-MOX CHO ◽  
JEONG-JUNG OAK ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Creep Rupture ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Squeeze Infiltration ◽  
Polygonal Shape ◽  
Creep Rupture Test ◽  
Infiltration Method

Aluminum borate whisker (9( Al 2 O 3)·( B 2 O 3)) reinforced AS52(with and without strontium modification) metal matrix composites (MMC) were fabricated by the squeeze infiltration method. Creep rupture test was carried out at 150°C and 100 MPa condition. Results showed that Alborex reinforcement and modified polygonal shape Mg 2 Si phase contributed to the enhancement of mechanical properties and creep resistance. Creep rupture time was increased 11% and minimum creep rate was decreased 17% in the composite. At the Alborex/matrix interface, uniform thin layer of MgO was formed. The initiation of micro-voids at the reinforcement/matrix or Mg 2 Si /matrix interface was followed by their growth and coalescence to macro-cracks.

Study on Rheo-Diecasting for In Situ Synthesized Mg2Si/AM60 Composites

2011 ◽  
Vol 383-390 ◽  
pp. 707-711
Author(s):  
Hong Yan ◽  
Yong Hu ◽  
Xiao Quan Wu
Keyword(s):  
Die Casting ◽  
Casting Machine ◽  
Chinese Script ◽  
Matrix Composites ◽  
Forming Process ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Mechanical Stirring ◽  
Semi Solid

Magnesium alloys have high specific strength, specific stiffness, excellent thermal conductivity and casting properties, which have a great prospects development in the industry, However, its low plasticity and ductility limited its application. Magnesium matrix composites can effectively improve its performance. Magnesium alloy die-casting is the main forming process, the conventional high-pressure die-casting (HPDC) defects in multi-cavity type, easy to volume gas, non-heat-treated. Compared with HPDC, the rheo-diecasting (RDC) process has been greatly developed for near-net shape components. In this paper, Mg2Si /AM60 composites is fabricated by in-situ synthesis and semi-solid magnesium matrix composites which are rheoformed in the die-casting machine are prepared by mechanical stirring. The results indicate that the microstructure of composites is non-dendritic and Chinese script type Mg2Si are fine distributed. The fundamental morphology of microstructure by HPDC is dendrite and liquid-phase distributed between dendrite irregularly. The RDC samples have close-to-zero porosity, less segregation, the most of semi-solid of microstructure in rheo-diecasting is spherical or as-spherical structure.

Influence of B4C on mechanical properties of AZ91 magnesium matrix composites

2022 ◽  
Author(s):  
G. Pitchayyapillai ◽  
M. Jinnah Sheik Mohamed ◽  
G. Dhanraj ◽  
R. Malkiya Rasalin Prince ◽  
M. Rajeshwaran ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Az91 Magnesium

A Hybrid Way for Optimizing Magnesium Matrix Composites Preparing Method

2011 ◽  
Vol 142 ◽  
pp. 229-232
Author(s):  
Jian Xiong Ye ◽  
Fa Yun Zhang
Keyword(s):  
Tensile Strength ◽  
Hybrid Method ◽  
Research Work ◽  
Processing Temperature ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites ◽  
Volume Fractions ◽  
Stirring Time

Magnesium matrix composites are prepared with a hybrid optimizing metod here. Different SiC volume fractions, processing temperature and stirring time have different influence on tensile strength and elongation of SiC; but how to find out the satisfied treating parameters is an unavoidable question, a hybrid method is put out and experiments prove the effectiveness of research work.

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