Article
Engineering, Aerospace
Jiawei Kelvin Bi, Zhi Cheng Kelvin Loke, Chi Keong Reuben Lim, Kok Hoon Tony Teng, Pak Keng Koh
Summary: This study investigates the mechanical properties of cold-sprayed materials and coatings made of aluminium 2024 and aluminium 7075 for repairs. The results show that cold spray can be used to restore thickness and repair oversized hole diameters in skin and panels, while maintaining good tensile, peel, bearing, and bending strength.
Article
Chemistry, Physical
Rafal Zybala, Bartosz Bucholc, Kamil Kaszyca, Krystian Kowiorski, Dominika Sobon, Wojciech Zorawski, Dorota Moszczynska, Rafal Molak, Zbigniew Pakiela
Summary: Additive manufacturing (AM) has witnessed remarkable development recently due to its relatively high efficiency. Cold spraying (CS), a specific method of AM, is used for coating, repairing machine parts, and manufacturing new components. This study attempts to employ laser surface treatment (LST) for cold-sprayed coatings on an aluminium alloy substrate and investigates the influence of laser beam interaction time on the coatings' properties.
Review
Materials Science, Multidisciplinary
Pedro Poza, Miguel Angel Garrido-Maneiro
Summary: Cold spray (CS) is a solid-state processing technique for depositing coatings on bulk materials to improve functionality and extend service life. Coatings generated via CS exhibit similar properties to bulk materials.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Materials Science, Coatings & Films
Debbie Hwee Leng Seng, Zheng Zheng, Zhi-Qian Zhang, Tzee Luai Meng, Siew Lang Teo, Boon Hee Tan, Qizhong Loi, Jisheng Pan
Summary: This study investigated the influence of spray angle on the quality of Ti64 coatings deposited by cold spray (CS). It was found that spray angle is an effective process parameter to control porosity, pore alignment, and extent of surface compressive residual stress in the CS deposited materials.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Yingkang Wei, Wenhao Zhang, Juan Zhang, Yan Wang, Xin Chu, Shanquan Qi, Yingchun Xie, Shifeng Liu
Summary: In this study, Ti-based corrosion protection coatings with high density were prepared via cold spray using mixed powders of TC4 and Ti. The coatings showed excellent corrosion resistance and great potential for economical and effective preparations.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Lijing Yang, Pei Wang, Xiaotao Luo, Huan Li, Haiyu Yang, Shaopeng Wang, Qingyu Li
Summary: In this study, Ti6Al4V deposits were prepared by cold spray and demonstrated porous microstructure and deformation ultrafine grain zone at the bonding interface. EBSD results showed grain orientation signals at the edge of particles and some grains smaller than 500 nm. TEM and SADPs revealed a gradient structure in the deposits.
MATERIALS & DESIGN
(2021)
Review
Materials Science, Coatings & Films
Ahmed Fardan, Christopher C. Berndt, Rehan Ahmed
Summary: Cold spray technology offers protective coatings, additive manufacturing, and repair services to various industrial sectors. Numerical modeling is extensively used to study particle impact modeling and predict key parameters, with experimental techniques utilized to measure residual stresses in cold spray deposits.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Kang Wang, Lijia Zhao, Tianliang Mao, Xinyu Cui, Jiqiang Wang, Tianying Xiong
Summary: 7075 aluminum alloy deposits were fabricated using laser-assisted cold spray (LACS) technology. The effect of laser power on the microstructure and mechanical properties of the deposits was investigated. The LACSed deposits showed an increase in adhesion strength and a slight decrease in microhardness compared to conventionally sprayed deposits.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Mieczyslaw Scendo, Katarzyna Staszewska-Samson
Summary: In this study, a titanium protective layer was deposited onto Al7075 substrate using a cold spray method. The influence of nozzle standoff distance on the mechanical properties and corrosion resistance of the Ti coating was investigated. The results showed that a standoff distance of 70 mm resulted in the highest microhardness and the lowest corrosion rate.
Article
Engineering, Mechanical
Arun Prasanth Nagalingam, Sharan Kumar Gopasetty, Jingjing Wang, Hemanth Kumar Yuvaraj, Abhay Gopinath, S. H. Yeo
Summary: Comparing the performance of L-PBF and wrought Ti-6Al-4V coupons, this research finds that aerospace MoM-treated L-PBF Ti-6Al-4V coupons have superior fatigue life and that the vibratory polishing process enhances both surface finish and fatigue life. Additionally, a life-cycle cost model assessment shows that L-PBF coupons are cost-effective for low-volume repairs, while the use of wrought material is economical for large-volume repair but may compromise fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Materials Science, Ceramics
Tina Ghara, Partha P. Bandyopadhyay
Summary: A thermally sprayed coating consists of multiple layers of different materials, and the transfer of residual stress between these layers at the interfaces affects their stress fields. X-ray diffraction analysis can be used to measure the residual stress field of the coating system. This study provides a basic understanding of the micro-mechanism of coating adhesion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Optics
Dipanjan Dey, Sagar Sarkar, Amlan Mahata, Asimava Roy Choudhury, Ashish Kumar Nath
Summary: Laser Assisted Cold Spray (LACS) is a hybrid deposition process that can deposit crack-free coatings with high compressive residual stress for various materials. However, its widespread usage in industries is often restricted due to high gas consumption rate, maintenance cost, and experimental set-up expenses. This study addresses these challenges by designing and fabricating a compact supersonic nozzle, which allows for the use of low gas pressure powder feeders. The gas flow characteristics of the nozzle were characterized, and successful crack-free deposition of 15-5 PH Stainless Steel with increased hardness and scratch hardness was achieved on an SS304 substrate.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Avneesh Kumar, Dhruva Kumar Goyal, Ravi Kant, Harpreet Singh
Summary: This study aimed to enhance the corrosion performance of cold-sprayed titanium/baghdadite bio-composite coatings through laser post processing. The results showed that laser treatment significantly improved the corrosion resistance by reducing porosity and surface roughness.
Article
Materials Science, Multidisciplinary
Jiaxuan Chi, Zhongyi Cai, Hepeng Zhang, Hongqiang Zhang, Wei Guo, Zhandong Wan, Guofeng Han, Peng Peng, Zhi Zeng
Summary: The combined manufacturing of direct energy deposition (DED) and laser shock peening (LSP) shows great potential in repairing titanium alloy components and improving their mechanical properties. This study evaluated the effects of LSP on microstructures, residual stress, and tensile properties of DEDed samples, finding that LSP induces a high-level compressive residual stress state and microstructure refinement, leading to an improvement in ultimate tensile strength.
MATERIALS & DESIGN
(2021)
Article
Optics
Wei Guo, Yongxin Zhang, Hao Sun, Hongqiang Zhang, Ying Zhu
Summary: Laser shock peening (LSP) is an advanced surface modification technology that can improve the mechanical properties of metal materials through inducing high-density dislocations and nanocrystallization. The magnitudes of compressive residual stress and microhardness are influenced by the LSP energy and impact times. LSP can significantly increase the fatigue life when the LSP area is perpendicular to the cracks, attributed to the effect of the wider region of the compressive residual stress field on reducing the crack propagation rate.
OPTICS AND LASER TECHNOLOGY
(2023)