Results 71 to 80 of about 2,139 (205)

Impact of Partitioning Temperature Parameters during the Quenching and Partitioning Process on Medium Carbon Steels with Two Different Alloying Strategies

steel research international, Volume 96, Issue 6, June 2025.
The study investigates microstructural evolution during high‐temperature partitioning in medium‐carbon, high‐silicon aluminum‐aided steels, exploring phase transformations affecting the final microstructure. Quenching and partitioning processes, with varying primary martensite fractions, reveal significant austenite stabilization at 350 °C, but ...
Mattia Franceschi, Giulia Stornelli, Roberto Perrone, Luca Pezzato, Andrea Di Schino, Manuele Dabalà   +5 more
wiley   +1 more source

Formation of Medium Carbon TRIP Steel Microstructure During Annealing in the Intercritical Temperature Range

Archives of Metallurgy and Materials, 2014
The paper presents the results of research conducted on austenite formation in the microstructure of 41MnSi6-5 TRIP steel during annealing in the intercritical temperature range.
Kokosza A., Pacyna J.
doaj   +1 more source

Effect of Cooling Practice on the Mechanical Properties of Medium‐Manganese Aluminum‐Alloyed Steels after Intercritical Annealing Quench and Partition Treatment

steel research international, Volume 96, Issue 2, February 2025.
Two medium (3 wt%)‐manganese aluminum steels are subjected to three different cooling strategies after hot rolling. The steels experience intercritical annealing quench and partition treatments subsequent to hot rolling and cooling. The results show that it is possible to enhance strength and elongation by changing the thermomechanical process and heat‐
Shahroz Ahmed, Olli Oja, Antti Kaijalainen, Pasi Peura   +3 more
wiley   +1 more source

Austenite formation in a medium-Mn steel during intercritical annealing via in situ high-energy X-ray diffraction

Journal of Materials Research and Technology
The microstructural evolution of a prototype Fe-0.15C-5.56Mn-1.1Si-1.89Al medium-Mn third-generation advanced high strength steel (3G AHSS) with a martensite-ferrite (MF) starting microstructure during intercritical annealing was determined in situ using
Azin Mehrabi, Hatem Zurob, Imed-Eddine Benrabah, Joseph R. McDermid   +3 more
doaj   +1 more source

Localized Laser Heat Treatment on AISI 1045 Steel Using a LPBF Laser

Engineering Reports, Volume 7, Issue 1, January 2025.
A LPBF laser was used to locally heat‐treat the surface of normalized AISI 1045 steel bars. While sections of overheating were seen, adaptations of previously published energy density models were able to determine valid parameters to create a hardened martensitic surface.
Benjamin Ours, Hammad Ur Rehman, Scott Downard, Timothy Cyders, Brian Wisner   +4 more
wiley   +1 more source

The Influence of Microstructure and Process Design on the Plastic Stability of 4 wt% Medium‐Manganese Steels

steel research international, Volume 96, Issue 1, January 2025.
Air‐hardening forging steels are a new steel concept, promising high strength and ductility combinations in combination with a reduced environmental impact. Herein, the effect of the microstructure before intercritical annealing is discussed in regard to microstructure evolution and strain hardening behavior.
Oguz Gülbay, Klaus Büßenschütt, Aleksandra Kozlowska, Adam Grajcar, Alexander Gramlich   +4 more
wiley   +1 more source

Effects of Silicon and Aluminum Alloying on Phase Transformation and Microstructure Evolution in Fe–0.2C–2.5Mn Steel: Insights from Continuous–Cooling–Transformation and Time–Temperature–Transformation Diagrams

steel research international, Volume 95, Issue 12, December 2024.
The study investigates how silicon and aluminum influence phase transformation, especially bainite, and microstructure using transformation diagrams, and proposes a new martensite start temperature formula. Silicon decelerates bainite transformation, whereas aluminum accelerates it.
Oguz Gulbay, Alexander Gramlich, Ulrich Krupp   +2 more
wiley   +1 more source

Novel 1.5 GPa-strength with 50%-ductility by transformation-induced plasticity of non-recrystallized austenite in duplex steels [PDF]

, 2019
Needs for steel designs of ultra-high strength and excellent ductility have been an important issue in worldwide automotive industries to achieve energy conservation, improvement of safety, and crashworthiness qualities.
Jo, M.C., Kim, H.S., Lee, S., Sohn, S.S., Song, H., Song, T.   +5 more
core   +1 more source

Optimizing Advanced High‐Strength Steel Joints via Regional Rapid Cooling in Resistance Spot Welding

steel research international, Volume 95, Issue 9, September 2024.
The study introduces a new methodology to control microstructural differentiations and internal stresses in martensitic steels’ heat‐affected zones during resistance spot welding (RSW). Utilizing a unique prototype setup based on the regional rapid cooling (RRC) process, the method optimizes material performance by narrowing the heat‐affected zone ...
Mehtap Hıdıroglu, Kemal Aydın, Nizamettin Kahraman   +2 more
wiley   +1 more source

Design of advanced steels by integrated computational materials engineering

Materials Genome Engineering Advances, Volume 2, Issue 2, June 2024.
A brief review is presented on the basic theories and multi‐scale computational tools of integrated computational materials engineering (ICME) for designing advanced steels, including the first‐principles calculations, the CALPHAD method (i.e., computational thermodynamics) fueled by dedicated databases, diffusion and phase‐field simulations, finite ...
Xiao‐Gang Lu, Yanlin He, Weisen Zheng
wiley   +1 more source