Results 81 to 90 of about 467,100 (247)

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

open access: yesEngineering 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   +4 more
wiley   +1 more source

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

open access: yessteel 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   +4 more
wiley   +1 more source

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

open access: yesMehran 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   +2 more
doaj  

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

open access: yessteel 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   +2 more
wiley   +1 more source

Initial Microstructure Effect on Intercritical Annealing Behavior and Mechanical Properties in Medium Mn Steels

open access: yes, 2019
DoctorThe present work reports the effect of different initial microstructures on intercritical annealing behavior and mechanical properties in Fe-0.14C-7Mn-1Si (wt.%) medium Mn steel.
최용훈
core  

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

open access: yessteel 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   +2 more
wiley   +1 more source

Influence of boron addition on microstructure and mechanical properties of medium-Mn advanced high-strength steel

open access: yesJournal of Materials Research and Technology
This study investigates the effects of 0.12 wt% boron addition on the microstructure and mechanical properties of a Fe-0.08C-4.5Mn-2.5Cr–1Si medium-Mn steel in as-rolled conditions and after the intercritical annealing process.
Mohammad Zabihi-Gargari   +3 more
doaj   +1 more source

Effect of dislocation multiplication in intercritical region on microstructure and properties of low-carbon bainite/ferrite multiphase steel

open access: yes工程科学学报, 2019
Hot deformation is a way to effectively improve strength and plasticity of multiphase steels simultaneously, thereby, improving mechanical properties of multiphase steels.
TIAN Ya-qiang   +6 more
doaj   +1 more source

Crystallography and mechanical properties of intercritically annealed quench and partitioned high-aluminum steel

open access: yesMaterials Characterization, 2019
Abstract The quenching and partitioning response of intercritically annealed steel with aluminum contents in the 2–3 wt.% range and a carbon content of 0.2 wt.% was studied. Two types of morphologies for retained austenite were observed in electron backscatter diffraction studies: blocky, untransformed austenite grains and partially transformed ...
T. Nyyssönen   +4 more
openaire   +3 more sources

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