Deformation-induced ultrafine grains near fatigue crack tip and correlative fatigue damage in Al matrix composite

2021 ◽  
Vol 193 ◽  
pp. 49-54
Author(s):  
Jiwei Geng ◽  
Yugang Li ◽  
Hongyu Xiao ◽  
Zhiping Wang ◽  
Mingliang Wang ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Fatigue Damage ◽  
Matrix Composite ◽  
Crack Tip ◽  
Ultrafine Grains ◽  
Al Matrix Composite ◽  
Al Matrix

Core-shell structural iron based met al matrix composite powder for laser cladding

2021 ◽  
pp. 160127
Author(s):  
Zhen Wang ◽  
Mixue Tan ◽  
Jiang Wang ◽  
Jing Zeng ◽  
Fengjun Zhao ◽  
...  
Keyword(s):  
Matrix Composite ◽  
Laser Cladding ◽  
Composite Powder ◽  
Core Shell ◽  
Iron Based ◽  
Structural Iron ◽  
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 Synthesis of carbon nanotube reinforced Al matrix composite coatings via cold spray deposition

2021 ◽  
Vol 405 ◽  
pp. 126676
Author(s):  
Xinliang Xie ◽  
Zhanqiu Tan ◽  
Chaoyue Chen ◽  
Yingchun Xie ◽  
Hongjian Wu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cold Spray ◽  
Matrix Composite ◽  
Spray Deposition ◽  
Composite Coatings ◽  
Al Matrix Composite ◽  
Al Matrix

Bimodal and monomodal diamond particle effect on the thermal properties of diamond-particle-dispersed Al–matrix composite fabricated by SPS

2014 ◽  
Vol 54 (11) ◽  
pp. 2463-2470 ◽  
Author(s):  
Kiyoshi Mizuuchi ◽  
Kanryu Inoue ◽  
Yasuyuki Agari ◽  
Masami Sugioka ◽  
Motohiro Tanaka ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Matrix Composite ◽  
Diamond Particle ◽  
Particle Effect ◽  
Al Matrix Composite ◽  
Al Matrix
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