Results 171 to 180 of about 13,341,060 (253)

Influences of Cleanliness, Carbide Size, Hardness, and Residual Stresses on Long‐Life Fatigue Strength and Crack‐Initiation Mechanisms in Carbide‐Rich Cold‐Work Tool Steels Using Normalized S–N Curves and Database‐Driven Validation of Murakami's √Area Model

steel research international, EarlyView.
Rotating‐bending fatigue tests on AISI D2 and AISI A11 quantify how cleanliness, carbide structure, hardness, and fabrication‐induced compressive residual stresses govern long‐life fatigue at NG = 107 cycles. Statistical fracture‐surface analysis and extreme‐value √area statistics link crack‐initiators to LLF strength.
Lennart Mirko Scholl, Frederik Tegeder, Dhirendar Chauhan, Bengt Hallstedt, Tobias Hajeck, Alexander Bezold, Christoph Broeckmann   +6 more
wiley   +1 more source

Anticancer Effects of Broccoli Sprout Extract and Sulforaphane Through ROS-Induced MAPK Pathway in Breast Cancer Cells and Xenografts. [PDF]

Antioxidants (Basel)
Lee SO, Yu JE, Subedi L, Phuyal S, Bamjan AD, Yoon G, Joo SH, Oh SJ, Park JW, Shim JH.   +9 more
europepmc   +1 more source

Microstructure Characterization of Bending Effects in 304L Stainless Steel Cladded with Low‐Alloy Steel Weld

steel research international, EarlyView.
Prebending of 304L/Q345R cladded plates significantly alters the subsequent weld thermal cycle and modifies the local interfacial microstructure. Combined electron backscatter diffraction (EBSD) and microscopy analysis demonstrates that deformation twinning, martensitic transformation, and defect initiation are concentrated at the trimaterial junction,
Ali Fahem, Elsiddig Elmukashfi, Hong Dong   +2 more
wiley   +1 more source

The origin of Cretaceous-Palaeogene impactor revealed by nickel isotopes. [PDF]

Sci Adv
Makhatadze GV, Moynier F, Brun LA, Goderis S, Claeys P, Koeberl C.   +5 more
europepmc   +1 more source

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

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

Knowledge of breast cancer and practice of breast self-examination among adolescent girls in semi-urban area - Savar, Dhaka, Bangladesh: A school-based cross-sectional study. [PDF]

PLoS One
Alam R, Akter S, Mohammad T, Rini R, Mariyam M, Priti AA, Ayshee AM, Sayem MSH, Mimi AM, Ahmed A, Kundu LR, Talukder MH, Sikder MT.   +12 more
europepmc   +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

Fluorite and rare-metals mineralization in greisenized granite of Um Naggat area, Egypt constrained by physical separation and beneficiation assessment. [PDF]

Sci Rep
Fawzy MM, Diab M, Abdel Gawad AE.
europepmc   +1 more source

Hydrogen‐Based Reduction of Hematitic Iron Ore in a Fluidized Bed Kinetic Reactor at Elevated Pressures

steel research international, EarlyView.
This study investigates the reduction behavior of two international iron ores, including a synthetic hematite produced by oxidation of magnetite, in a novel fluidized‐bed kinetic reactor at elevated pressures. The reduction takes place at various temperatures (650°C, 700°C, and 750°C), and various hydrogen partial pressures (30, 55, and 80 vol% H2 ...
Valentina Nigitz, Aaron Wieder, Sandra Jezernik, Christoph Ahr, Mark Berchtold, Franz Winter   +5 more
wiley   +1 more source