Review
Materials Science, Multidisciplinary
Shuang-Shuang Li, Xin Yue, Qing-Yuan Li, He-Li Peng, Bai-Xin Dong, Tian-Shu Liu, Hong-Yu Yang, Jun Fan, Shi-Li Shu, Feng Qiu, Qi-Chuan Jiang
Summary: Aluminum alloys, with their low density, high strength, and good corrosion resistance, have been widely used in the aerospace industry. They help reduce the total weight of aircraft, improve fuel efficiency and load capacity, and demonstrate excellent performance under harsh environments. Additionally, aluminum alloys have good recyclability and align with the principles of sustainable development, making them indispensable in the aerospace field.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Timothy Warner, Diana Koschel, Ricky Whelchel, K. Paul Smith, Geoff Scamans, Randall Merrill
Summary: The recent safety information bulletin from the European Aviation Safety Agency highlights the phenomenon of brittle intergranular cracking in 7xxx aluminum alloys. Testing conditions for this phenomenon are severe and differ from actual in-service conditions. This study observes that reducing temperature or stress levels to those closer to in-service conditions can significantly increase the time to failure of tested specimens. The cracking morphology and mechanism resemble stress corrosion cracking occurrences in real-life aerostructures.
Article
Chemistry, Physical
Monika Chomiak, Michal Salacinski, Filip Golebiowski, Piotr Broda
Summary: This article presents the technology of making adhesive joints using two different primers and tests the mechanical properties of the prepared samples. The results show that samples made using one of the primers have higher strength properties under different seasoning conditions, and the presence of moisture and/or water reduces the mechanical strength of the adhesive joints. Additionally, the effectiveness of polymer coatings in protecting the aluminum substrate against corrosion decreases after a certain period of time.
Review
Polymer Science
Runze Jin, Zihan Zhou, Jia Liu, Baolu Shi, Ning Zhou, Xinqiao Wang, Xinlei Jia, Donghui Guo, Baosheng Xu
Summary: With the development of the aerospace industry, the requirements for thermal protection materials for aerospace vehicles have increased. Aerogel, as a nano porous material with ultra-low thermal conductivity, has gained more attention in aerospace thermal insulation applications. This paper summarizes the research status and hot issues of various types of aerogels used in thermal protection, and provides suggestions for their future development.
Article
Materials Science, Coatings & Films
Peter Totaro, Boris Khusid
Summary: This study demonstrated the overall advantages of multistep anodization for heat-treated wrought aluminum alloy AA7075-T6, showing that multistep processes can improve coating properties and morphology, increase abrasion resistance and hardness of the coatings.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Sen Du, Shengen Zhang, Jianwen Wang, Zhengfeng Lv, Zhiyuan Xu, Chen Liu, Jun Liu, Bo Liu
Summary: The conventional refining of aluminum scraps using nitrogen-fluxes often leads to the generation of aluminum nitride and residual fluxes, resulting in low purity of the recycled aluminum melt and difficulties in disposing of secondary aluminum dross. Our innovative research has achieved the recycling of aerospace-grade clean aluminum alloy melts, utilizing the argon bubble floating process to remove impurities and hydrogen, and achieving an ultra-clean melt. The argon refining dross can be recycled as a raw material for aluminum electrolysis, and the hydrogen content and the number of inclusions in the recycled aluminum melt can be reduced to the level of aerospace aluminum alloy melt, except for the inclusions with particle size >= 20 mm, which still remain a challenge.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Kranthi Kumar Maniam, Shiladitya Paul
Summary: This paper provides a detailed review of electrochemical deposition of Al and Al alloys using ionic liquids, covering the latest progress and challenges in electroplating aluminum on different metal substrates. It also discusses the important factors in industrial-scale electroplating and future challenges.
Article
Materials Science, Multidisciplinary
Brian P. Thurston, Daniel R. Klenosky, Heath E. Misak, Anupam Vivek, Glenn S. Daehn
Summary: In this study, a technique for impact welding between dissimilar aluminum alloys with small standoff gaps was demonstrated using the Vaporizing Foil Actuator Welding technique. The results showed that this method can produce consistent welds with minimal deformation in the flyer sheet, and it does not damage nearby coated surfaces. A geometric model was also proposed to explain the generation of sufficient impact angles in small standoff distances.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Peter Totaro, Boris Khusid
Summary: This study demonstrates the advantages of multistep anodization of AA2024-T3, showing that starting anodization at a low voltage and then slowly ramping current density can result in coatings with improved properties.
Article
Materials Science, Multidisciplinary
Christine A. Gebara, Paul D. Lytal, Julian J. Rimoli
Summary: In the past decade, the use of complex deployable structures on CubeSats and large-scale spacecraft has become increasingly common. Traditional manufacturing challenges have led to advancements in metal additive manufacturing technology, opening up new possibilities for aerospace hardware.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Engineering, Mechanical
Gabriel Demeneghi, Kristina Rodgers, Ching Hua Su, William M. Medders, Sridhar Gorti, Ryan Wilkerson
Summary: Aluminum 2219-T62 and aluminum 2219-T87 plates were friction stir welded together for a simulated service life test. The specimen experienced premature failure due to a lack of bonding between the weld nugget zone and the base material, as well as stress concentrators from unconsumed material from the first weld pass.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Chemistry, Inorganic & Nuclear
Ryosuke S. S. Maki, Shunta Matsumura, Sota Kida, Tomoyuki Maeda, Hatsuo Taira, Yoshihiro Kusano
Summary: This paper describes the formation mechanism of monophasic Al3BC3 powder with hexagonal plate-like morphology using Al, B4C, and C powders in a stoichiometric ratio. The results show that there is no vaporization of the powder mixture during heating in a high-purity argon atmosphere. The phases and particle morphology of Al3BC3 strongly depend on the mixing conditions before heating.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Cheng-Hsien Kuo, Zi-Yi Lin
Summary: The study emphasized the importance of selecting the correct cutting parameters and machining techniques to reduce deformation, improve surface quality, and decrease cutting force when machining thin plates made of 6061 aluminum alloy through high-speed milling.
Review
Chemistry, Multidisciplinary
Radhika Wazalwar, Megha Sahu, Ashok M. Raichur
Summary: This review discusses the application of high-performance epoxy composites in the aerospace industry and the use of nanomaterials to enhance their mechanical properties. Graphene, TMDs, and hBN have been explored as nanoreinforcements for epoxy composites, offering high strength and toughness. However, challenges such as dispersion issues, lack of standardization, and potential health hazards have hindered their commercialization.
NANOSCALE ADVANCES
(2021)
Article
Acoustics
Ibukun O. Adebolu, Hirokazu Masui, Mengu Cho
Summary: This paper compares different quantitative methods for evaluating shock response similarity, aiming to find the most suitable metric. A new metric, the weighted distance, is proposed for retrieving the most similar SRS to a target SRS specification from a shock database. The weighted distance outperforms other metrics in database SRS retrieval for rapid qualification testing.
SHOCK AND VIBRATION
(2021)
