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Precision Manufacturing of Advanced Alloys and Composites (2nd Edition)
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Precision Manufacturing of Advanced Alloys and Composites (2nd Edition)

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 October 2026 | Viewed by 1720

Editors

Prof. Dr. Maojun Li

E-Mail Website
Guest Editor
State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
Interests: superalloys; metal cutting; composites; additive manufacturing; laser processing/cutting
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Pan Gong

E-Mail Website
Guest Editor
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Interests: bulk metallic glasses; high-entropy alloys; titanium alloys; metallic composites; precision metal plastic forming; powder metallurgy; incremental sheet forming
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The use of advanced alloys and composites is steadily increasing as an alternative to traditional metallic materials in various industry sectors. Within the aerospace sector, components in the latest generation of airplanes have already incorporated greater levels of advanced materials in order to provide benefits in terms of strength-to-weight ratios or high-temperature resistance, leading to enhanced aircraft operational performance/efficiency and associated fuel cost savings. Although there is knowledge and research already present in the literature on the manufacturing of alloys/composites, developing new precision and ultraprecision manufacturing strategies/techniques is crucial to further improve component performance, productivity and machinability; hence, the motivation for organizing this Special Issue.

This Special Issue aims to bring together leading academic scientists, researchers, and research scholars to exchange and share their research experiences and experimental results on all aspects of “Precision Manufacturing of Advanced Alloys and Composites”. It also provides a premier interdisciplinary platform for researchers, practitioners, and educators to present the most recent innovations, trends and practical challenges encountered, as well as solutions adopted in the field of precision manufacturing.

It is our pleasure to invite you to submit original research papers, short communications or reviews within the scope of this Special Issue, which includes the topics/research areas mainly related to precision/ultraprecision manufacturing technologies and their use in advanced alloys and composites, precision machinery, surface integrity, microstructure evolution, and mechanics and modeling during precision forming and machining processes. 

Prof. Dr. Maojun Li
Prof. Dr. Pan Gong
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • forming technologies
  • conventional machining technologies
  • nonconventional machining technologies
  • precision manufacturing process
  • precision machinery
  • intelligent manufacturing
  • precision engineering
  • advanced aerospace alloys/composites
  • CFRP
  • metal matrix composites
  • polymers
  • composite forming

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Related Special Issue

Published Papers (3 papers)

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Research

25 pages, 4220 KB  
Article
Influence of Machining Allowance, Build Orientation, and Cutting Parameters on Hole Quality in Additively Manufactured ABS Components
by Artur Szajna, Tomasz Rydzak, Anna Bazan, Paweł Turek, Andrzej Kawalec, Mario Álvarez-Blanco and Antonio Guerra-Sancho
Materials 2026, 19(15), 3173; https://doi.org/10.3390/ma19153173 - 24 Jul 2026
Viewed by 355
Abstract
Material Extrusion (MEX) additive manufacturing (AM) of ABS polymer components often requires post-process machining to achieve the necessary dimensional precision and surface quality. However, the influence of printing parameters and tool–material interaction in hybrid manufacturing remains insufficiently explored. This study investigates the impact [...] Read more.
Material Extrusion (MEX) additive manufacturing (AM) of ABS polymer components often requires post-process machining to achieve the necessary dimensional precision and surface quality. However, the influence of printing parameters and tool–material interaction in hybrid manufacturing remains insufficiently explored. This study investigates the impact of initial hole size (Dstart), build orientation, and cutting parameters (cutting speed and feed rate) on the dimensional accuracy and surface roughness of machined holes in ABS-M30 specimens. Samples were fabricated in vertical and horizontal orientations and subjected to drilling in solid material and enlargement of printed pilot holes using a twist drill on a 5-axis machining center. Dimensional deviation and surface roughness (Ra, Rz) were evaluated using coordinate metrology and profilometry. The results showed that the smallest machining allowance (0.062 mm per side) was insufficient to completely remove the printing-induced surface texture, resulting in significantly higher and more variable Ra and Rz values. This distinct low-machining-allowance regime was confirmed by statistical analysis and representative optical observations. Conversely, a machining allowance of 0.565 mm per side (corresponding to Dstart = 9 mm) resulted in substantially lower surface roughness (Ra ≈ 1.6 µm). Vertical build orientation generally provided better surface quality than the horizontal orientation, which was consistent with fewer visible surface features in the selected optical fields of view. All machining conditions resulted in negative dimensional deviations, indicating elastic recovery of the ABS material after machining. An exploratory multi-response ranking showed that the lowest composite quality scores for overall final hole quality were associated with Dstart = 10 mm (machining allowance of 0.062 mm per side). When the analysis was limited to the machining-dominated regime, the lowest score was obtained for the vertical build orientation, Dstart = 9 mm, a cutting speed of 40 m/min, and a feed rate of 0.2 mm/rev. These findings provide preliminary guidelines for selecting hybrid manufacturing conditions for MEX-manufactured ABS-M30 components. Full article
(This article belongs to the Special Issue Precision Manufacturing of Advanced Alloys and Composites (2nd Edition))
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14 pages, 19803 KB  
Article
Stress-Driven Generation of Continuous Fibrous Material Paths for Additive Manufacturing: Numerical Assessment and Manufacturing Feasibility
by Andrea Sellitto and Aniello Riccio
Materials 2026, 19(9), 1868; https://doi.org/10.3390/ma19091868 - 1 May 2026
Cited by 1 | Viewed by 555
Abstract
This work presents a methodology for the generation of continuous fibre trajectories based on principal stress directions in continuous fibre-reinforced additive manufacturing (CFAM). The material system considered consists of continuous carbon fibre (CCF-1.5K) embedded in a CFC-PA thermoplastic matrix. CFAM enables the deposition [...] Read more.
This work presents a methodology for the generation of continuous fibre trajectories based on principal stress directions in continuous fibre-reinforced additive manufacturing (CFAM). The material system considered consists of continuous carbon fibre (CCF-1.5K) embedded in a CFC-PA thermoplastic matrix. CFAM enables the deposition of fibres along tailored paths, allowing improved alignment with the load direction, compared to traditional composite manufacturing. In this way, the strong anisotropy of composite materials, typically considered a limitation, is exploited as a design opportunity by aligning fibres with the structural load paths. The proposed approach combines finite element analysis with a path generation procedure, including the computation of principal stress directions, the extraction of streamlines of the principal stress field, and a dedicated post-processing stage aimed at obtaining continuous and manufacturable fibre layouts. The effectiveness of the method is assessed through a finite element-based comparison with conventional fibre configurations, showing an increase in global stiffness of approximately 20% with respect to the best-performing unidirectional layout. In addition, the feasibility of the generated trajectories is demonstrated through printing tests performed on a continuous fibre additive manufacturing system. The results confirm that the proposed methodology enables the generation of physically realizable fibre paths while improving structural performance. Full article
(This article belongs to the Special Issue Precision Manufacturing of Advanced Alloys and Composites (2nd Edition))
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17 pages, 6586 KB  
Article
Parametric Study on Scarf Patch Repairs for Shipboard Composite Structures
by Panpan Liang, Guanbo Wang, Qingchang Guo, Maojun Li and Pan Gong
Materials 2026, 19(8), 1644; https://doi.org/10.3390/ma19081644 - 20 Apr 2026
Viewed by 476
Abstract
This study focuses on the of key engineering parameters for the repair of shipboard carbon fiber reinforced polymer composite structures using a scarf patch repair configuration. A three-dimensional finite element model was developed to systematically analyze the effects of repair location (center-symmetric, diagonal-asymmetric, [...] Read more.
This study focuses on the of key engineering parameters for the repair of shipboard carbon fiber reinforced polymer composite structures using a scarf patch repair configuration. A three-dimensional finite element model was developed to systematically analyze the effects of repair location (center-symmetric, diagonal-asymmetric, and edge-unidirectional) and cut-out depth (2.0 mm, 3.0 mm, and 4.0 mm) on the mechanical response of the repair structure. The results indicate that although the local stress level of the center-symmetric repair is slightly higher, it provides a continuous load transfer path with more balanced stress distribution, demonstrating the best overall mechanical performance. When the cut-out depth is 3.0 mm, the repair structure achieves an optimal balance between stress uniformity and displacement coordination, effectively reducing the risk of early adhesive layer failure and local buckling. This study identifies the optimal parameter combination for scarf patch repairs, providing important theoretical foundations and references for the design of repair processes and the standardization of engineering practices in shipboard composite structures. Full article
(This article belongs to the Special Issue Precision Manufacturing of Advanced Alloys and Composites (2nd Edition))
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