scholarly journals Properties and application of coatings sprayed with cold gas

2018 ◽  
Vol 90 (10) ◽  
Author(s):  
Wojciech Żórawski ◽  
Medard Makrenek ◽  
Dominika Soboń
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Additive Manufacturing ◽  
Thermal Spray ◽  
New Technology ◽  
Cold Spraying ◽  
7075 Aluminum Alloy ◽  
Microstructure And Mechanical Properties ◽  
Al 7075 ◽  
Cold Gas

Cold spraying is new technology which allows to obtain coatings with properties which are unobtainable by previously used thermal spray methods. This technology can be alsoused in the area of additive manufacturing. The article presents findings of microstructure and mechanical properties of cold-sprayed titanium structures on Al 7075 aluminum alloy.

Effect of Al-5Ti-1B Grain Refiner on Microstructure and Mechanical Properties of 7075 Aluminum Alloy

2015 ◽  
Vol 817 ◽  
pp. 331-336
Author(s):  
Tao Li ◽  
Shun Cheng Wang ◽  
Kai Hong Zheng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Average Diameter ◽  
7075 Aluminum Alloy ◽  
Grain Refiner ◽  
Coarse Dendrite ◽  
Microstructure And Mechanical Properties ◽  
Equiaxed Grains ◽  
Addition Amount

The microstructure of Al-5Ti-1B grain refiner was analyzed by XRD and SEM. The effect of the Al-5Ti-1B grain refiner on the microstructure and mechanical properties of 7075 aluminum alloy were studied. Results show that when the addition amount of Al-5Ti-1B grain refiner is 0.1%, the microstructure of 7075 aluminum alloy is refined from coarse dendrite to equiaxed grains with an average diameter of 55.1μm. The tensile strength and elongation of 7075 aluminum alloy are improved by 11.32% and 36.04% compared with that of 7075 aluminum alloy without adding Al-5Ti-1B grain refiner. With increasing the addition amount of Al-5Ti-1B grain refiner from 0.1% to 0.5%, both the tensile strength and elongation are improved. When the addition amount of Al-5Ti-1B grain refiner increases to 0.5%, the microstructure of 7075 aluminum alloy is refined to uniform equiaxed grains with an average diameter of 32.5μm. The tensile strength and elongation are improved by 18.11% and 48.76%, respectively.

scholarly journals A Review of Aluminum Alloy Fabricated by Different Processes of Wire Arc Additive Manufacturing

2021 ◽  
Vol 27 (1) ◽  
pp. 18-26
Author(s):  
Zeli WANG ◽  
Yuanbin ZHANG
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Additive Manufacturing ◽  
Topological Optimization ◽  
Utilization Rate ◽  
Future Research ◽  
General Tendency ◽  
High Deposition Rate ◽  
Microstructure And Mechanical Properties ◽  
Wire Arc Additive Manufacturing

Due to the advantages of high deposition rate, low equipment cost and high material utilization rate, aluminum alloy fabricated by wire arc additive manufacturing (WAAM) has been widely concerned by scholars and scientific institutions. This article reviews the features of aluminum alloy fabricated by different WAAM processes (GMAW-based, GTAW-based, CMT-based, PAW-based). Research status of the porosity, dimensional accuracy, microstructure and mechanical properties of aluminum alloy in different process is analyzed. General tendency of microstructure and mechanical properties were discussed, and suggestions for the future research direction were put forward including mandatory constraint on molten pool and structural topological optimization.

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