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Advanced Manufacturing Technology and Treatment Process of Metallic Materials
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Advanced Manufacturing Technology and Treatment Process of Metallic Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: 20 July 2024 | Viewed by 2519

Special Issue Editor

Dr. Animesh Kumar Basak

E-Mail Website
Guest Editor
Adelaide Microscopy, The University of Adelaide, Adelaide, SA 5005, Australia
Interests: microscopy; machining; 3D printing; tribology; nanostructure materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metallic materials act as a building block for any given structural applications, and the demand for metallic materials prepared by advanced manufacturing technologies is ever rising. The tradition and subtractive manufacturing of metallic materials has gone a long way in the past few centuries with optimized manufacturing techniques. Now, advanced manufacturing technologies such as additive manufacturing are emerging and serving as complementary options for manufacturing processes. Additive manufacturing, encompassing a wide range of technologies, is regarded as a new ‘turning point’ in industrial production. Having said that, in many instances, additive manufacturing is not a standalone process, as subsequent processing methods such as heat treatment, aging, etc., are often employed to achieve the performance of the components at the desired levels. The root of successful advanced manufacturing technologies lies in the better understanding of microstructure–processing–property relationships from the macro- to the nano-scale level. We believe that growth in additive manufacturing will also depend on the performance of the materials employed and the development of new materials. In view of that, the development of different post-treatments for additively manufactured components is still in scarcity, and its in-depth understanding is sought after.

This Special Issue aims to cover the recent progress in the advanced manufacturing of metallic materials, with a focus on related post-treatment processes such as heat treatment, aging, thermomechanical processing, physical and numerical simulation, structural characterization, and so on.

We kindly invite you to submit manuscripts for this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Animesh Kumar Basak
Guest Editor

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 100 words) can be sent to the Editorial Office for announcement on this website.

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-blind 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

  • metals
  • metal matrix composites
  • additive manufacturing
  • post-treatment
  • microstructure–property evaluation

Published Papers (3 papers)

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Research

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13 pages, 5907 KiB  
Article
Inner Surface Morphology and Roughness Evolution of Pilgering Thick-Walled Tubes
by Ran Li, Pengfei Jin, Weijie Wang, Cheng Zhang, Xingwu Du and Jinfeng Huang
Materials 2023, 16(24), 7618; https://doi.org/10.3390/ma16247618 - 12 Dec 2023
Viewed by 697
Abstract
A hot-working die steel thick-walled tube Pilger rolling test was carried out using an LG40 Pilger mill, and the morphology and roughness evolution of the inner surface were examined using a white-light interferometer. The experimental results showed that micro-wrinkles formed on the basis [...] Read more.
A hot-working die steel thick-walled tube Pilger rolling test was carried out using an LG40 Pilger mill, and the morphology and roughness evolution of the inner surface were examined using a white-light interferometer. The experimental results showed that micro-wrinkles formed on the basis of the original inner surface morphology, the altitude difference (Sz) between the peaks and valleys of the inner surface profile increased from 3.18 to 3.686 μm, and Sa increased from 0.722 to 0.892 μm in the diameter reduction zone. As the tube continued to feed into the wall thickness reduction zone, the micro-wrinkles gradually flattened, Sz and Sa were decreased to 1.625 and 0.174 respectively, and Sa maintained a slight fluctuation of 0.174~0.2 μm in the final sizing zone. From the diameters of the roller groove and taper of the mandrel, the three-dimensional strain of the tube in the wall thickness reduction zone was calculated, and the strain state of the tube in the complete deformation zone could be analyzed by finite element simulations. We found that in the diameter reduction zone, the inner surface was not supported by the mandrel and was free, while micro-wrinkles formed under circumferential compressive strain. In the wall thickness reduction zone, the deformation of the inner surface was controlled by the mandrel, and the micro-wrinkles were gradually flattened by radial compressive strain. The ratio of radial to circumferential strain was the key to flattening the micro-wrinkles, and when the ratio increased, the inner surface roughness (Sa) was reduced to 0.174 μm. In the sizing zone, the radial and circumferential strains were small, and the inner surface roughness showed no obvious fluctuation. Full article
(This article belongs to the Special Issue Advanced Manufacturing Technology and Treatment Process of Metallic Materials)
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19 pages, 13808 KiB  
Article
Microstructural and Nanoindentation Investigation on the Laser Powder Bed Fusion Stainless Steel 316L
by Abdulaziz Kurdi, Thamer Tabbakh and Animesh Kumar Basak
Materials 2023, 16(17), 5933; https://doi.org/10.3390/ma16175933 - 30 Aug 2023
Cited by 5 | Viewed by 1116
Abstract
Additive manufacturing (AM) of stainless steel is more difficult than other metallic materials, as the major alloying elements of the stainless steel are prone to oxidation during the fabrication process. In the current work, specimens of the stainless steel 316L were made by [...] Read more.
Additive manufacturing (AM) of stainless steel is more difficult than other metallic materials, as the major alloying elements of the stainless steel are prone to oxidation during the fabrication process. In the current work, specimens of the stainless steel 316L were made by the powder laser bed fusion (P-LBF) additive manufacturing process. These specimens were investigated by electron microscopy and micro-/nano-indentation techniques to investigate the microstructural aspects and the mechanical properties, respectively. Compositionally, a similar wrought stainless steel was subjected to identical investigation, and used as a benchmark material. The microstructure of the P-LBF-processed alloy shows both equiaxed and elongated grains, which are marginally smaller (3.2–3.4 μm) than that of the wrought counterpart (3.6 μm). Withstanding such marginal gain size refinement, the increase in shear stress and hardness of the L-PBF alloy was striking. The L-PBF-processed alloy possess about 1.92–2.12 GPa of hardness, which was about 1.5 times higher than that of wrought alloy (1.30 GPa), and about 1.15 times more resistant against plastic flow of material. Similarly, L-PBF-processed alloy possess higher maximum shear stress (274.5–294.4 MPa) than that of the wrought alloy (175.9 MPa). Full article
(This article belongs to the Special Issue Advanced Manufacturing Technology and Treatment Process of Metallic Materials)
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10 pages, 7992 KiB  
Technical Note
A Case Study: Electrically Assisted Stress Relief Annealing for Cold-Coiled Helical Automotive Springs
by Van Loi Tran, Sung-Tae Hong, Ji Ye Hong and Tae Shik Yeo
Materials 2024, 17(8), 1774; https://doi.org/10.3390/ma17081774 - 12 Apr 2024
Viewed by 303
Abstract
This study experimentally investigated electrically assisted (EA) stress relief annealing for cold-coiled commercial automotive springs. In EA stress relief annealing, the temperature of a spring is rapidly increased to the annealing temperature (400 °C) and is held constant for a specified time using [...] Read more.
This study experimentally investigated electrically assisted (EA) stress relief annealing for cold-coiled commercial automotive springs. In EA stress relief annealing, the temperature of a spring is rapidly increased to the annealing temperature (400 °C) and is held constant for a specified time using a pulsed electric current. Experimental findings show that the effectiveness of the EA stress relief annealing is superior to that of the conventional stress relief annealing, especially in terms of process time. The present study suggests that EA stress relief annealing, with properly selected process parameters, can effectively substitute for time-consuming conventional stress relief annealing using a furnace for cold-coiled automotive springs. Full article
(This article belongs to the Special Issue Advanced Manufacturing Technology and Treatment Process of Metallic Materials)
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