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Metals
Special Issues
Hot Stamping Processing of Steel and Alloys
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Special Issue "Hot Stamping Processing of Steel and Alloys"

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: 31 December 2023 | Viewed by 1913

Special Issue Editor

Dr. Zhiqiang Zhang

E-Mail Website
Guest Editor
Key Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun 130025, China
Interests: hot stamping; boron steel; aluminum alloy; coating; characterization; microstructure; hydrogen induced delayed fracture; numerical simulation

Special Issue Information

Dear Colleagues,

Hot stamping technology can improve the formability of materials and obtain parts with high strength and good shape accuracy. Driven by the improved need for automobile body lightweight, hot stamping technology has seen significant new developments in recent years. This Special Issue focuses on the application of new materials, including steel and alloy materials, new die technologies, and new forming and simulation technologies in the field of hot stamping; the application of hot stamping technology in light alloys, such as aluminum alloys, magnesium alloys, and titanium alloys; the application of 2GPa high-strength steel and methods to avoid hydrogen-induced delayed fracture of high-strength steel; new coating development technology; studies on friction and wear behavior in hot stamping processes; and application of new heat treatment technology in the hot stamping field. In addition to the processing of traditional body safety parts, such as anti-collision beam, B-pillar, and so on, we expect hot stamping technology to be used in the processing of new types of parts, such as new energy vehicle battery cases, and so on. Our goal is for this Special Issue to promote the exchange of new ideas on hot stamping technology among researchers and further improve the application of this technology.

Dr. Zhiqiang Zhang
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. Metals is an international peer-reviewed open access monthly 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

  • hot stamping
  • boron steel
  • aluminum alloy
  • coating
  • characterization
  • microstructure
  • hydrogen induced delayed fracture
  • numerical simulation

Published Papers (2 papers)

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Research

13 pages, 4386 KiB  
Article
The Optimization of Welding Spots’ Arrangement in A-Pillar Patchwork Blank Hot Stamping
by
Wenfeng Li
,
Zhiqiang Zhang
,
Hongjie Jia
and
Mingwen Ren
Metals 2023, 13(8), 1409; https://doi.org/10.3390/met13081409 - 06 Aug 2023
Viewed by 642
Abstract
With increasingly severe environmental problems, energy saving and environmental protection have become two important issues to be solved in the automobile industry. Patchwork blank hot-stamping technology can be used to obtain light-weight and high-strength parts and is thus increasingly used in the manufacture [...] Read more.
With increasingly severe environmental problems, energy saving and environmental protection have become two important issues to be solved in the automobile industry. Patchwork blank hot-stamping technology can be used to obtain light-weight and high-strength parts and is thus increasingly used in the manufacture of autobody parts. Because the main blank and the patched blank need to be connected through spot welding before forming, the welding spots’ arrangement has a great influence on the formability of the part. In this study, a thermal–mechanical coupling finite element analysis model of A-pillar patchwork blanks was established. With the thickness of the patched blank, the distance between the welding spot and the external contour of the patched blank, and the number of welding spots as optimization variables, together with the maximum thinning rate and the maximum welding spot force as objectives, the influence of welding spot arrangement on forming quality was analyzed, and the welding spots’ arrangement was optimized using a central composite design (CCD), the response surface method (RSM), and the genetic algorithm (GA). The results showed that when the initial welding spot was located close to the contour of the patched blank, the bending moment was greater when the weld spot passed through the die corner, leading to the rupture of the welding spot or its surrounding base material due to the greater thinning rate. When the patched blank was thicker than the main blank, the main blank cracked during the forming process due to a greater increase in the thinning rate. The optimal solution of the weld spot arrangement on the A-pillar patchwork blanks was a 1.2 mm thick main blank, 0.8 mm thick patched blank, a distance of 29 mm between the weld spot and the contour line of the patched blank, and 16 weld spots. Hot-stamping experiments were conducted using the optimized weld spots’ arrangement, and high-quality parts were obtained. Full article
(This article belongs to the Special Issue Hot Stamping Processing of Steel and Alloys)
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8 pages, 4175 KiB  
Communication
Effect of Batch-Annealing Temperature on Oxidation of 22MnB5 Steel during Austenitizing
by
Bibo Li
,
Yanning Liu
,
Ying Chen
,
Nan Li
,
Xiaolong Zhao
,
Jikang Li
and
Maoqiu Wang
Metals 2023, 13(6), 1011; https://doi.org/10.3390/met13061011 - 24 May 2023
Cited by 1 | Viewed by 685
Abstract
In this paper, the effect of batch-annealing temperature on the oxidation of 22MnB5 steel during austenitizing was studied. When the batch-annealing temperature was decreased from 690 to 680 °C, the surface roughness of cold-rolled 22MnB5 steel decreased, which reduced the oxide layer thickness [...] Read more.
In this paper, the effect of batch-annealing temperature on the oxidation of 22MnB5 steel during austenitizing was studied. When the batch-annealing temperature was decreased from 690 to 680 °C, the surface roughness of cold-rolled 22MnB5 steel decreased, which reduced the oxide layer thickness during the subsequent austenitizing process and had little effect on the mechanical properties in the cold-rolled and quenched state. This indicated that oxidation during austenitizing could be reduced by properly reducing the batch-annealing temperature without affecting the mechanical properties. Full article
(This article belongs to the Special Issue Hot Stamping Processing of Steel and Alloys)
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