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To investigate the effects of deformation parameters on the phase transformation of B1500HS high-strength steel, non-isothermal deformation tests were conducted on a Thermomaster-Z thermal mechanical simulator under different conditions in this study. Qualitative and quantitative investigations were carried out by analyzing the dilatation curves, color metallograph, and hardness data of deformed specimens. The results indicate that deformation can promote the formation of non-martensite. Higher initial deformation temperature and lower strain are beneficial for obtaining more martensite in the deformed high-strength steel and leading to higher martensite transformation temperatures. Meanwhile, the variation of strain rate has relatively small effects on the content and transformation temperature of martensite, and the effects do not show a singular trend.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12194812 | PMC |
http://dx.doi.org/10.3390/ma18122843 | DOI Listing |
Sensors (Basel)
August 2025
Department of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL, UK.
The continuous annealing process is widely used in the production of advanced high-strength steels. However, to tightly regulate the mechanical properties of the steel, precise control of processing parameters is needed. Although some techniques are available to monitor the mechanical properties of the steel on entry and exit to the furnace, monitoring the evolving microstructure of the steel through installation of sensors in the annealing line is extremely challenging due to the high temperature, high speed of the steel strip and limited space in the furnace.
View Article and Find Full Text PDFMaterials (Basel)
August 2025
Department of Vehicle and Machine Mechatronics, Faculty of Mechanical Engineering, Opole University of Technology, Prószkowska Street 76, 45-758 Opole, Poland.
Passenger cars have unibody constructions, which means that their collision damage often involves key structural components. Successful repair requires the selection of appropriate technology and adherence to quality standards, which directly affects the safety of the vehicle's continued operation. A commonly used method is a system of replacing damaged components with new ones, while repair by molding and forming is also possible-provided the original structural features are preserved.
View Article and Find Full Text PDFMaterials (Basel)
August 2025
Institute of Robots & Machine Design, Faculty of Mechanical Engineering, Military University of Technology, 2 Gen. S. Kaliskiego St., 00-908 Warsaw, Poland.
The article presents an analysis of the mechanical properties of S700MC steel, which represents advanced low-alloy high-strength steels. The influence of microstructure, shaped by a controlled thermo-mechanical rolling process, on the strength, ductility, and resistance to cracking and fatigue of the material is discussed. Particular attention is paid to the anisotropy of mechanical properties resulting from the orientation relative to the rolling direction, manifested by variations in yield strength, tensile strength, and total elongation of the specimens.
View Article and Find Full Text PDFBone Joint Res
August 2025
Department of Orthopedics, The Affiliated Hospital of Southwest Medical University, Luzhou, China.
Aims: Our study explores the candy box (CB) technique with sutures and Nice knot as a novel treatment for inferior pole patellar fractures, potentially superior to traditional wire fixation.
Methods: CT data from five adult knee joints were extracted to create finite element models for inferior pole patellar fractures and four internal fixation models. These included CB technique combined with high-strength sutures and Nice knot (CB-H), CB technique combined with tendon sutures and Nice knot (CB-T), CB technique combined with steel wires (CB-S), and tension-band wiring combined with cerclage wiring (TBWC).
Sci Rep
August 2025
School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran.
This study investigates the significant factors on weld quality in the resistance spot welding of quench and partitioning advanced high-strength steel. Attention is laid emphasis on nugget formation and growth, weldability range (lobe curve), nugget size and shape (macrostructural features), coating effects, mechanical properties, and fracture behavior of resistance spot welds. As zinc-coated steel sheets are widely applied in body-in-white in automotive industry, coating's effect on weld quality is particularly significant.
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