Additive Manufacturing of Metallic Alloys and Composites

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (15 May 2023) | Viewed by 1766

Special Issue Editors


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Guest Editor
School of Engineering, Edith Cowan University, Joondalup, WA 6027, Australia
Interests: advanced manufacturing; machining aerospace structural materials; characterization of materials; optimization
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Research Centre for Modelling and Simulation (RCMS), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
Interests: additive manufacturing; mechanical testing; composite materials; damage modeling

Special Issue Information

Dear Colleagues,

Additive manufacturing (AM), being a disruptive technology, has affected the manufacturing paradigm to a great extent. The main advantage of AM is the minimum tooling required, along with the high buy-to-fly ratio, due to the addition of layers that waste less raw material, contrary to removing the material from a block to produce a part. Consequently, the cost of the fabricated parts and lead time has significantly declined with the enhanced buy-to-fly ratio. Moreover, this technology is very suitable for the smaller lot production in prototyping the new part design validation in automotive, aerospace, and biomedical engineering sectors. There are various techniques involved in additive manufacturing, such as binder jetting and selective laser sintering, employed for the 3D printing of metals. The main challenge is to formularize the materials system that shall be compatible with each other and provide a cost-effective solution in terms of raw materials, processing, and operations cost. Moreover, the components produced will have higher-quality features, such as mechanical performance, meeting dimensional requirements and a better surface finish.

This Special Issue focuses on the materials system development and processes for metallic and composite additive manufacturing; however, topics in other 3D printing technologies and the AM of composite materials, such as fiber-reinforced polymers (FRPs), are also welcomed. 

Dr. Muhammad Aamir
Dr. Israr Ud Din
Guest Editors

Manuscript Submission Information

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Keywords

  • additive manufacturing
  • metals and alloys
  • composites
  • characterization
  • properties
  • processes

Published Papers (1 paper)

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Research

11 pages, 3308 KiB  
Article
Effect of Nano-La2O3 and Mo on Wear Resistance of Ni60a/SiC Coatings by Laser Cladding
by Yudong Fang and Xuemei Chen
Processes 2023, 11(3), 850; https://doi.org/10.3390/pr11030850 - 13 Mar 2023
Viewed by 1210
Abstract
To improve the wear resistance of the TMR blade and investigate the effect of nano-La2O3 and Mo on the wear resistance of laser cladding coating. 65Mn blade as the substrate, La2O3, Mo and Mo-La2O [...] Read more.
To improve the wear resistance of the TMR blade and investigate the effect of nano-La2O3 and Mo on the wear resistance of laser cladding coating. 65Mn blade as the substrate, La2O3, Mo and Mo-La2O3 composite powders were added into Ni60a/SiC composite powder. Using scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and the CFT-I surface synthesizer, the phase composition, element distribution and friction and wear properties of the coating were analyzed to obtain the best composition of the composite coating. The results showed that the wear resistance of Mo-La2O3-Ni60a/SiC composite coating was the best. The coating was analyzed by X-ray diffraction and X-ray photoelectron spectroscopy. The coating contained hard phases such as CrB, CrC and Cr7C3, and the element distribution was uniform. It can be seen from the scanning electron microscope that the addition of nano-Mo and La2O3 improves the toughness and compactness of Ni60a/SiC composite coating, and the microstructure is refined. The friction coefficient of Mo-La2O3-Ni60a/SiC composite coating is 0.5, and the wear depth is 12.35 μm, 23% and 89% lower than that of 65Mn substrate, respectively. The surface roughness of the Mo-La2O3-Ni60a/SiC coating after wear is 2.06 μm, and the wear amount is 0.001 g. The wear mechanism of the coating is mainly adhesive wear, abrasive wear, and oxidation wear. The wear surface of the Mo-La2O3-Ni60a/SiC composite coating is mainly composed of micro furrows, accompanied by the generation of new wear-resistant layers. Full article
(This article belongs to the Special Issue Additive Manufacturing of Metallic Alloys and Composites)
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