Results 131 to 140 of about 5,978 (267)

A Comparative Study of Directed Energy Deposition‐Arc and Casting: Enhancing Mechanical and Thermal Properties of Hot‐Work Tool Steels

steel research international, EarlyView.
The study investigates the influence of DED‐Arc/M versus casting on the microstructure and material properties of X40CrMoV5‐1 (AISI H13) hot‐work tool steel. DED‐Arc/M yields finer microstructures, superior mechanical strength, and ductility, but slightly reduced thermal conductivity.
Ulf Ziesing, Aaron Berger, Hendric Schaefer, Sebastian Weber, Jonathan Lentz   +4 more
wiley   +1 more source

Increasing the Reuse Potential of High‐Strength Steels by Extending the Fatigue Life through Surface Treatments

steel research international, EarlyView.
Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava, Oguz Gulbay, Srinivasa Raghavan Raghuraman, Marion Kreins, Fabian Weber, Peter Starke, Alexander Gramlich, Ulrich Krupp   +7 more
wiley   +1 more source

Partitioning-time dependent evolution of retained austenite and its impact on microstructure and mechanical properties in lean TRIP-assisted steel

Journal of Alloys and Metallurgical Systems
TRIP-assisted multiphase steels are gradually finding employment in the automotive industry for their excellent strain-hardening characteristics. In the current study, in a comparatively lean composition steel, different combinations of multiple phases ...
Avala Lavakumar, Loku Singgappulige Rosantha Kumara   +1 more
doaj   +1 more source

Alloy Qualification for Producing Quench and Tempered Plate Steels with Extra‐Heavy Gage

steel research international, EarlyView.
This study develops alloy concepts for ultraheavy steel plates (>100 mm) with ≥690 MPa yield strength. Through dilatometry and Jominy testing, the effects of Mo, Ni, and B on hardenability are quantified. A synergy between 0.5% Mo and 0.5%–1.0% Ni ensures core strength at low cooling rates, while boron microalloying suppresses ferrite and promotes ...
Xabier Azpeitia, Unai Mayo, Nerea Isasti, Eric Detemple, Hardy Mohrbacher, Pello Uranga   +5 more
wiley   +1 more source

Effect of Austenitizing Temperature on the Retained Austenite and Carbide Fractions in SAE 52100 Steel after Quenching

Materials Research
This study investigates the influence of austenitizing temperature on the retained austenite content and hardness of SAE 52100 steel. Nine samples were subjected to different austenitizing temperatures (760–920°C) followed by oil quenching ...
Maria Vittoria Moraschini Reis, Carolina Amaral, Leandro Reis Lidízio, Sérgio Souto Maior Tavares, Bráulio Soares Archanjo, Oleksii Kuznetsov, Carlos Alberto Achete, Geronimo Perez   +7 more
doaj   +1 more source

HWTS 50 Tool Steel Tailored for Laser Powder Bed Fusion: Sliding Wear of Bare Surfaces and Nitriding Response in Comparison with 18Ni300 and AISI H13

steel research international, EarlyView.
This work investigates the wear resistance and nitriding behavior of PBF‐LB/M‐processed Osprey HWTS 50, a lean hot work tool steel. Three heat treatment conditions are compared to conventional wrought H13, H11, and PBF‐LB/M 18Ni300. The study highlights HWTS 50's enhanced nitrogen diffusion, deeper nitriding hardness depth, and comparable or improved ...
Jonathan Hann, Giorgia Lupi, Sylvain Dossin, Riccardo Casati, Mandanà Moshiri, Arne Röttger, Faraz Deirmina   +6 more
wiley   +1 more source

X-ray Measurement of Internal Stesses in the Retained Austenite of Hardened Steels [PDF]

Since retained austenite particles have great influence upon the mechanical properties of hardened steel, it is very important to know internal stresses in the retained austenite phase.
Fujiwara, Haruo, フジワラ, ハルオ, 33890, コジマ, コウヘイ, 小島, 公平, Kojima, Kohei, シマトミ, ヤスジ, Shimatomi, Yasuji, 33895, 33893, 33894, 33891, 33892, 藤原, 晴夫, 島冨, 泰司   +14 more
core  

Quasi-Situ Characterization of Retained Austenite Orientation in Quenching and Partitioning Steel via Uniaxial Tensile Tests. [PDF]

Materials (Basel), 2020
Gao P, Liu J, Chen W, Li F, Pang J, Zhao Z.   +5 more
europepmc   +1 more source

In Situ Alloying of H13 Tool Steel With TiC via PBF‐LB/M

steel research international, EarlyView.
H13 tool steel is in situ alloyed with titanium carbides (TiC) in amounts up to 30 wt.%. This approach offers the advantage that the carbides melt only partially during processing, preventing excessive carbon enrichment of the steel matrix. The resulting microstructure consists of coarse, undissolved and fine, reprecipitated carbides, leading to grain ...
Oliver Bürgi, Anke Kaletsch, Christoph Broeckmann   +2 more
wiley   +1 more source

Exploiting Residual Elements Arising from Scrap Steel in Future Sustainable Steel Alloy Design

steel research international, EarlyView.
Herein, the effects of residual elements Cu and Sn on grain growth, recrystallization, and phase transformation in C–Mn steel are summarized, and a case study is presented on how the presence of residual elements can be exploited to reduce deliberate Nb microalloying while achieving the same grain size control and strength during thermomechanical ...
Claire Davis, Carl Slater, Yulin Ju, Jiaqi Duan, Pedram Dastur, Martin Strangwood   +5 more
wiley   +1 more source