Results 81 to 90 of about 6,009,905 (172)

Effect of prior austenite grain size on the abrasive wear resistance of ultra-high strength martensitic steels

, 2020
Prior austenite grain size has a marked effect on the hardenability, strength, and impact toughness properties of steels. This study was conducted in order to understand the effect of prior austenite grain size and morphology on the mechanical properties
Kaijalainen, A. (Antti), Kömi, J. (Jukka), Haiko, O. (Oskari), Hannula, J. (Jaakko), Valtonen, K. (Kati), Javaheri, V. (Vahid)   +5 more
core  

Microstructure and cleavage in lath martensitic steels

Science and Technology of Advanced Materials, 2013
In this paper we discuss the microstructure of lath martensitic steels and the mechanisms by which it controls cleavage fracture. The specific experimental example is a 9Ni (9 wt% Ni) steel annealed to have a large prior austenite grain size, then ...
John W Morris Jr, Chris Kinney, Ken Pytlewski and Y Adachi
doaj   +1 more source

A Critical Review on Nitrogen Control in the Scrap‐Based Electric Arc Furnace Steelmaking Route to Produce Low‐Nitrogen Steels

steel research international, EarlyView.
In primary electric arc furnace (EAF) steelmaking, carbon boiling removes nitrogen from liquid steel and sustains slag foaming. In 100% scrap‐ or hydrogen direct reduced iron (HDRI)‐based EAF steelmaking, carbon boiling is absent; therefore, carbonaceous material and oxygen injection into the slag is needed to maintain foaming and avoid nitrogen ...
Zushu Li, Lei Guo, Jintao Gao, Yuri Korobeinikov   +3 more
wiley   +1 more source

Strain‐Induced NbC Precipitation as a Governing Mechanism for Hot Deformation Resistance in CrNiMnMoB Ultrahigh‐Strength Steels

steel research international, EarlyView.
Strain‐induced NbC precipitation governs hot‐deformation resistance in CrNiMnMoB ultrahigh‐strength steel by suppressing dynamic recrystallization, increasing activation energy, and refining martensitic substructures. The precipitation response is controlled by temperature, supersaturation, and strain rate, with slow deformation promoting extensive NbC
Atef Hamada, Ali Khosravifard, Khaled Elanany, Ahmed W. Abdelghany, Jukka Kömi, Pasi Suikkanen, Mohammed Ali   +6 more
wiley   +1 more source

Comparative analysis of prior austenite grain size (PAGS) determination in high grade pipeline steels

Fracture and Structural Integrity
In high‑grade casing steels operated in H2S-saturated environments, the sulfide stress cracking (SSC) is a serious concern. SSC is driven by hydrogen-coupled mechanisms that are sensitive to the microstructure formed from primary austenite.
Alexander Frantsuzov, Artyom Dong, Konstantin Korobov, Eugene Statnik, Alexey Salimon, Alexander Korsunsky   +5 more
doaj   +1 more source

Elaboration of Thermomechanical Treatment Conditions of Ti-V and Ti-Nb-V Microalloyed Forging Steels

Archives of Metallurgy and Materials, 2014
The goal of the work was to describe the forging conditions of thermomechanical treatment for Ti-V and Ti-Nb-V microalloyed steels. Conditions of hot-working allowing to obtain both the desired microstructure and mechanical properties of forgings were ...
Opiela M.
doaj   +1 more source

Effect of Hot Rolling Temperature on Oxide Scale Formation, Grain Size, and Pickling of Stainless Steel

steel research international, EarlyView.
The effects of finishing rolling temperature, coiling temperature, and annealing on scale formation and pickling performance are studied. Scale morphology and composition are studied via SEM‐EDS, and pickling performance is studied by evaluating scale residues and mass losses during pickling.
Roosa Kähkönen, Aleksi Laukka, Teemu Tuovinen, Susanna Airaksinen, Juho Haapakangas, Ulla Lassi   +5 more
wiley   +1 more source

Austenite reconstruction via EBSD measurements: a tool to understand low Carbon martensite steel properties

MATEC Web of Conferences, 2015
The basic characterization of the austenite grain size and shape prior to quenching to martensite was already used in the past to optimize the mechanical properties and impact toughness of low Carbon martensitic steel.
Bracke Lieven, Sanchez Laura Moli, Bernier Nicolas   +2 more
doaj   +1 more source

Vanadium Effect on a Medium Carbon Forging Steel

Metals, 2016
In the present work the influence of vanadium on the hardenability and the bainitic transformation of a medium carbon steel is analyzed. While V in solid solution enhances the former, it hardly affects bainitic transformation.
Carlos Garcia-Mateo, Lucia Morales-Rivas, Francisca G. Caballero, David Milbourn, Thomas Sourmail   +4 more
doaj   +1 more source

Effect of Cu and CuP Additions on the Microstructure and Nanoindentation‐Based Fracture Behavior of CoNiAlSi Ferromagnetic Shape Memory Alloys

Advanced Engineering Materials, Volume 28, Issue 19, 7 October 2026.
Cu and combined Cu–P microalloying refine the microstructure and enhance the nanoindentation‐derived fracture resistance of CoNiAlSi ferromagnetic shape memory alloys without suppressing the martensitic transformation. Comparative SEM, DSC, and nanoindentation results reveal that the CuP‐containing alloy provides the most balanced response, achieving ...
Mehmet Demir
wiley   +1 more source