Special Issue "Design, Preparation and Properties of High Performance Steels"

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 30 November 2023 | Viewed by 816

Special Issue Editors

Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China
Interests: steels; microstructure; mechanical properties; machine learning
Bao Steel-SJTU Joint Research Center of Future Steels, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: steels; material design; mechanical behavior

Special Issue Information

Dear Colleagues,

Steel is the workhorse of our infrastructure with widest application scope and largest consumption. Naturally, the development of steel has never ceased. Paricularly in the past hundred years, with the progress of modern physical metallurgy technology, the performances of steel have been greatly improved. Currently, for high-performance steels, not only have mechanical properties such as high strength and toughness been sought but more attention has also been focused on improving application performances, such as ensuring better weldability and formability, longer service life and higher safety. According to different engineering scenarios, more specific performance requirements are also proposed, such as crack resistance toughness of ship plate steel for super large container ships, seismic resistance and fire resistance performance of construction steel for modern buildings, impact resistance and wear resistance of tool and die steel for large stamping equipment, and corrosion and hydrogen induced cracking resistance of steel for tubular goods used in oilfields with severe corrosive environment, among others. The development of high-performance steel is inseparable from the support of physical metallurgy theory. The design of alloy elements not only considers the effect of solid solution and precipitation but also the nonequilibrium distribution and coupling effects between multi-alloying elements. The microstructure design has developed from the simple phase type to multi-phase and multi-scale regulation. The manufacture of steels has also become increasing complex, necessitating a narrow process window. It is believed that the continuous innovation of physical metallurgy theory and the continuous progress of industrial technology and equipment will undoubtedly promote the improvement of steel performances.

In this Special Issue, we welcome the articles that propose novel designs of alloying and processing to achieve high performance. Here, the term ‘high performance’ is not limited to a single outstanding property but also includes excellent comprehensive performances. Research works with bright engineering application prospects are particularly welcomed. We sincerely look forward to your contribution.

Dr. Xiucheng Li
Dr. Shilong Liu
Guest Editors

Manuscript Submission Information

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Keywords

  • high-performance steels
  • strength
  • toughness
  • ductility
  • corrosion
  • wear resistance
  • microstructure
  • alloying
  • weldability

Published Papers (1 paper)

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Research

Article
Effect of Double-Quenching on the Hardness and Toughness of a Wear-Resistant Steel
Metals 2023, 13(1), 61; https://doi.org/10.3390/met13010061 - 26 Dec 2022
Viewed by 579
Abstract
Martensitic/bainitic wear-resistant steels are widely used in civilian industry, where a good combination of strength and toughness is required. In the present study, a double-quenching process was applied and compared to the conventional single-quenching process. The microhardness and ductile–brittle transition temperature were measured, [...] Read more.
Martensitic/bainitic wear-resistant steels are widely used in civilian industry, where a good combination of strength and toughness is required. In the present study, a double-quenching process was applied and compared to the conventional single-quenching process. The microhardness and ductile–brittle transition temperature were measured, and the microstructure was characterized with scanning electron microscopy and electron backscatter diffraction (EBSD) technique. It was found that the double-quenching process refined the prior austenite grain size by 43% and simultaneously improved the toughness and hardness. The ductile-to-brittle transition temperature was decreased from −77 °C to −90 °C, and the hardness was increased by 8%. Based on the EBSD data, a detailed analysis of the grain boundary distribution was performed using a recently developed machine learning model. Unlike what was found in previous studies, for the studied wear-resistant steel, the refinement of the prior austenite grain did not increase the block boundary density while increasing the high-angle packet boundary density. As a result, the total density of the high-angle grain boundaries in the double-quenched specimen was not improved compared to the single-quenched specimen. Further inspection suggested that it is the prior austenite grain boundaries and high-angle packet boundaries that contribute to the hardness and toughness, and the key factors that determine their effectiveness are the high misorientation angle between the {110} slip planes and the high slip transmission factor. Full article
(This article belongs to the Special Issue Design, Preparation and Properties of High Performance Steels)
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