Results 71 to 80 of about 2,193 (227)

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

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

Procedure of Calculating the Parameters of the Inter-Pulse Period in Pulsed Arc Welding [PDF]

, 2016
The procedure of calculating the parameters of the inter-pulse period such as current strength, electrode supply speed and time length is presented in the paper. Their importance for the stable arc burning is demonstrated.
Krampit, Andrey Garoldovich, Krampit, Maksim Andreevich   +1 more
core   +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

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

Intercritical Heat Treatment Effects on Low Carbon Steels Quenched from Intermediate Temperature Austenitization [PDF]

, 2012
Six low carbon steels containing carbon in the range 0.13-0.18wt%C were studied after intercritical quenching, intercritical quenching with low temperature tempering, intercritical annealing and intercritical normalizing using specimens originally ...
Ezekoye, BA, Offor, PO
core   +2 more sources

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

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

Effect of Intercritical Heat Treatment on Mechanical Properties of Plain Carbon Dual Phase Steel

Mehran University Research Journal of Engineering and Technology, 2017
Mechanical properties of DP (Dual Phase) steels are greatly influenced by the microstructural features such as grain size, morphology and martensite volume fraction (Vm%).
Imtiaz Ali Soomro, Muhammad Ishaque Abro, Muhammad Moazam Baloch   +2 more
doaj