scholarly journals Study on microscopic ductile fracture of in-situ TiB2/2024 Al matrix composite

2016 ◽  
Vol 2 ◽  
pp. 2222-2229 ◽  
Author(s):  
Su Jie ◽  
Li Yazhi ◽  
Jiang Wei ◽  
Zhang Dailong
Keyword(s):  
Ductile Fracture ◽  
Matrix Composite ◽  
Al Matrix Composite ◽  
Al Matrix

scholarly journals Mechanical Properties of Al Matrix Composite Enhanced by In Situ Formed SiC, MgAl2O4, and MgO via Casting Process

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1767
Author(s):  
Yuhong Jiao ◽  
Jianfeng Zhu ◽  
Xuelin Li ◽  
Chunjie Shi ◽  
Bo Lu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composite ◽  
Compression Strength ◽  
Casting Process ◽  
Al Alloy ◽  
Pyrolysis Process ◽  
Alloy Matrix ◽  
Al Matrix Composite ◽  
Al Matrix

Al matrix composite, reinforced with the in situ synthesized 3C–SiC, MgAl2O4, and MgO grains, was produced via the casting process using phenolic resin pyrolysis products in flash mode. The contents and microstructure of the composites’ fracture characteristics were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Mechanical properties were tested by universal testing machine. Owing to the strong propulsion formed in turbulent flow in the pyrolysis process, nano-ceramic grains were formed in the resin pyrolysis process and simultaneously were homogeneously scattered in the alloy matrix. Thermodynamic calculation supported that the gas products, as carbon and oxygen sources, had a different chemical activity on in situ growth. In addition, ceramic (3C–SiC, MgAl2O4, and MgO) grains have discrepant contents. Resin pyrolysis in the molten alloy decreased oxide slag but increased pores in the alloy matrix. Tensile strength (142.6 ± 3.5 MPa) had no change due to the cooperative action of increased pores and fine grains; the bending and compression strength was increasing under increased contents of ceramic grains; the maximum bending strength was 378.2 MPa in 1.5% resin-added samples; and the maximum compression strength was 299.4 MPa. Lath-shaped Si was the primary effect factor of mechanical properties. The failure mechanism was controlled by transcrystalline rupture mechanism. We explain that the effects of the ceramic grains formed in the hot process at the condition of the resin exist in mold or other accessory materials. Meanwhile, a novel ceramic-reinforced Al matrix was provided. The organic gas was an excellent source of carbon, nitrogen, and oxygen to in situ ceramic grains in Al alloy.

scholarly journals A TiCx reinforced Fe (Al) matrix composite using in-situ reaction

2013 ◽  
Vol 23 (1) ◽  
pp. 13-17 ◽  
Author(s):  
Xinhua Chen ◽  
Hongxiang Zhai ◽  
Wenjuan Wang ◽  
Shibo Li ◽  
Zhenying Huang
Keyword(s):  
Matrix Composite ◽  
In Situ Reaction ◽  
Al Matrix Composite ◽  
Al Matrix

Fabrication of Al2O3 Particle Reinforced Aluminum Matrix Composite by In Situ Chemical Reaction

2014 ◽  
Vol 915-916 ◽  
pp. 788-791 ◽  
Author(s):  
Bin Sui ◽  
Jian Min Zeng ◽  
Ping Chen ◽  
Wu Kui Gan ◽  
Jin Bo Lu
Keyword(s):  
Grain Boundary ◽  
Matrix Composite ◽  
Chemical Reaction ◽  
Glass Powder ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Al Matrix Composite ◽  
Al Matrix

A new Al2O3particle reinforced Al matrix composite was fabricated through in-situ chemical reaction between Al and glass powder. The microstructures and element distributions of the composite were observed and analyzed through OM, SEM and EDS, respectively. The results show the reinforced Al2O3particle synthesized by in-situ chemical reaction are aggregated on the grain boundary. The grains can be refined with the increasing of powder. Eutectic silicone with granulous shape was found in the microstructure, which attributes to the modification of Na and Ca to eutectic silicone.

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