Advanced High Strength Steels: Properties and Applications

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

Deadline for manuscript submissions: 20 January 2026 | Viewed by 84

Special Issue Editors


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Guest Editor
School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: physical metallurgy; advanced steel materials; microstructure analysis
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Guest Editor
Department of Mechanical Engineering, The University of Hong Kong, Hong Kong 999077, China
Interests: carbon management and precipitation of ultrahigh-strength steels; heat-resistant high-strength aluminum alloy
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Guest Editor
National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, China
Interests: physical metallurgy; advanced steel materials; microstructure characterization; precipitation; thermo-mechanical processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Physical metallurgy is the root of the vigorous development of modern materials science. The physical metallurgy of steel is an important part of ironmaking and steelmaking. The main research scope of this field is the evolution of microstructures and the changes in properties during processing and heat treatment after the solidification of chemical metallurgy products. The main problem in steel production in terms of physical metallurgy is the relationship between process, structure, and properties. In-depth study of microstructures could reveal the mechanism behind various appearances and promote the progress of process technology and the development of advanced materials.

Prof. Dr. Xiangdong Huo
Dr. Zhengwu Peng
Dr. Songjun Chen
Guest Editors

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Keywords

  • physical metallurgy
  • process parameters
  • microstructure evolution
  • mechanical properties
  • TMCP
  • recrystallization
  • transformation
  • precipitation
  • steel grade

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Published Papers (1 paper)

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Research

20 pages, 15301 KiB  
Article
Application of CH241 Stainless Steel with High Concentration of Mn and Mo: Microstructure, Mechanical Properties, and Tensile Fatigue Life
by Ping-Yu Hsieh, Bo-Ding Wu and Fei-Yi Hung
Metals 2025, 15(8), 863; https://doi.org/10.3390/met15080863 (registering DOI) - 1 Aug 2025
Abstract
A novel stainless steel with high Mn and Mo content (much higher than traditional stainless steel), designated CH241SS, was developed as a potential replacement for Cr-Mo-V alloy steel in the cold forging applications of precision industry. Through carbon reduction in an environmentally friendly [...] Read more.
A novel stainless steel with high Mn and Mo content (much higher than traditional stainless steel), designated CH241SS, was developed as a potential replacement for Cr-Mo-V alloy steel in the cold forging applications of precision industry. Through carbon reduction in an environmentally friendly manner and a two-stage heat treatment process, the hardness of as-cast CH241 was tailored from HRC 37 to HRC 29, thereby meeting the industrial specifications of cold-forged steel (≤HRC 30). X-ray diffraction analysis of the as-cast microstructure revealed the presence of a small amount of ferrite, martensite, austenite, and alloy carbides. After heat treatment, CH241 exhibited a dual-phase microstructure consisting of ferrite and martensite with dispersed Cr(Ni-Mo) alloy carbides. The CH241 alloy demonstrated excellent high-temperature stability. No noticeable softening occurred after 72 h for the second-stage heat treatment. Based on the mechanical and room-temperature tensile fatigue properties of CH241-F (forging material) and CH241-ST (soft-tough heat treatment), it was demonstrated that the CH241 stainless steel was superior to the traditional stainless steel 4xx in terms of strength and fatigue life. Therefore, CH241 stainless steel can be introduced into cold forging and can be used in precision fatigue application. The relevant data include composition design and heat treatment properties. This study is an important milestone in assisting the upgrading of the vehicle and aerospace industries. Full article
(This article belongs to the Special Issue Advanced High Strength Steels: Properties and Applications)
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