Results 71 to 80 of about 2,162 (214)

Metal Science Aspects of the Influence of Dispersion Nitride Hardening on the Structure of Hypoeutectoid and Eutectoid Carbon Steels

Механика машин, механизмов и материалов, 2020
The article presents the results of metal science research on the influence of nitrogen and vanadium microalloying of carbon steels with a carbon content of 0.5–0.8 wt.% on the thermodynamic and thermokinetic parameters of the phase redistribution of ...
Sergey Ya. Shipitsyn, Viktor I. Zhornik, Lyudmila E. Isaeva, Pavel N. Kucherenko, Dmitry I. Lihovey   +4 more
doaj  

Analyses of the Deformability and Chemistry of Non‐Metallic Inclusions in QT Steels With Increased Recycling‐Induced Tramp Element Content

steel research international, EarlyView.
This work uses high‐temperature dilatometry to examine how the tramp elements Cu, Ni, and Sn affect the deformability of non‐metallic inclusions and matrix in quench‐and‐temper steel. Mg‐bearing inclusions deform less than Mg‐free ones. Copper lowers formability. Nickel increases deformability.
Julian Cejka, Isabell Gruber, Gerald Klösch, Susanne Katharina Michelic   +3 more
wiley   +1 more source

FEATURES OF KINETICS OF DECAY AND FORMATION OF STRUCTURE IN СHROMO-MOLYBDENUM-VANADIUM STEEL AT CONTINUOUS COOLING FROM DIFFERENT TEMPERATURES OF AUSTENITIZATION

Литьë и металлургия, 2016
Influence of austenite grain size of chrome-molybdenum-vanadium steel on formation of structure at continuous cooling has been studied. It is shown, that at the coarsen of grain with increasing temperature of austenitization from 850 till 1050°С ...
V. A. Lutsenko, T. N. Golubenko, O. V. Lutsenko, N. A. Glazunova   +3 more
doaj  

Insights Into Paint‐Bake Toughening of Resistance Spot Welds of a 2.0 GPa Warm‐Stamped Medium‐Mn Steel

steel research international, EarlyView.
Paint baking of resistance spot welded joints of 2.0 GPa warm‐stamped medium‐Mn steel activates low‐temperature tempering, forming fine cementite in the fusion zone and enhancing toughness. Crack propagation resistance increases, shifting the failure mode from partial interfacial to complete pullout, with peak load and energy absorption rising ...
Sunusi Marwana Manladan, Savyasachi Nellikode, YeoJin Jang, Sumin Lee, Dileep Chandran Ramachandran, Sung‐bo Heo, Jinyoung Lee, Young‐Kook Lee, Yeong‐Do Park   +8 more
wiley   +1 more source

Evaluation of carbon diffusion in heat treatment of H13 tool steel under different atmospheric conditions

Journal of Materials Research and Technology, 2015
Although the cost of the heat treatment process is only a minor portion of the total production cost, it is arguably the most important and crucial stage on the determination of material quality.
Maziar Ramezani, Timotius Pasang, Zhan Chen, Thomas Neitzert, Dominique Au   +4 more
doaj   +1 more source

In-situ observation of liquid zinc-induced erosion behavior diffusion mechanism in zinc-coated 22MnB5 steel

Journal of Materials Research and Technology, 2020
In this study, the erosion of liquid zinc penetrating 22MnB5 steel during austenitization was investigated by an in situ method. High-temperature confocal laser scanning microscopy (HT-CLSM) results show that erosion occurred in several areas after ...
Wang-jun Peng, Guang-xin Wu, Jie-yu Zhang   +2 more
doaj   +1 more source

Tailoring Microstructure and Hardness in Maraging 300 Steel via 2.4 wt.% Niobium Addition and Controlled Aging Treatments

steel research international, EarlyView.
High Nb (2.4 wt.%) addition to Maraging 300 steel drives lattice distortion and nanoscale Nb–Mo‐rich precipitation, confirmed by energy‐dispersive X‐ray spectroscopy mapping (Mo ~5.4 wt.%, Nb ~2.5 wt.%). Nanoindentation reveals strong matrix hardening (H >4.8 GPa) at 480°C aging, while 560°C induces ~1.92 vol.% reverted austenite, enabling tunable ...
Laylla Sharon B. Peixoto, Mohammad Masoumi, Luís Henrique N. de Lima, Marcos Natan da Silva Lima, Luis Flávio Gaspar Herculano, Isabel Ferreira de Barros, Geronimo Perez, Maria Vittoria Moraschini Reis, Hamilton Ferreira Gome Abreu, Marcelo J. Gomes da Silva   +9 more
wiley   +1 more source

Tailored Hardening and Isothermal Bainitizing of Additively Manufactured Nitrogen‐Enhanced Martensitic Chromium Steel

steel research international, EarlyView.
Tailored heat treatments transform additively manufactured high‐nitrogen martensitic Cr steel from austenitic as‐built condition to high‐hardness states. Isothermal bainitizing at 250°C generates an ultrafine nanostructure and achieves higher hardness than conventional hardening and tempering, highlighting a promising postprocessing route for laser ...
Philip König, Sebastian Weber, Jonathan Lentz   +2 more
wiley   +1 more source

The effect of double austenitization on the microstructure and fracture toughness of AISI M2 high speed steel

, 1998
In this study, the effect of double austenitization on microstructure and toughness of AISI M2 high speed steel was investigated. For double austenitization treatment, the specimens, which are hardened initially at 1220 degrees C and quenched in air ...
Ögel, Bilgehan, Erdogan Tekin, Tekin, E, Bilgehan Ögel   +3 more
core   +1 more source

Effect of Different Surface Treatments on Resistance to Abrasive Wear of AISI 4140 Steel

steel research international, EarlyView.
This study investigates how different surface treatments affect resistance to abrasive wear of AISI 4140 Steel. The wear rate was significantly higher in samples subjected to conventional treatments than in samples coated using the HVOF process, demonstrating the superior efficiency of coatings applied by thermal spraying in mitigating abrasive wear ...
Everton Freitas de Oliveira, Tomasz Trzepieciński, Valmir Dias Luiz, Jorge Luis Coleti   +3 more
wiley   +1 more source