Results 171 to 180 of about 844,277 (344)

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

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

Fretting Wear of Ti-48Al-2Cr-2Nb [PDF]

An investigation was conducted to examine the wear behavior of gamma titanium aluminide (Ti-48Al-2Cr-2Nb in atomic percent) in contact with a typical nickel-base superalloy under repeated microscopic vibratory motion in air at temperatures from 296-823 K.
Draper, Susan L., Lerch, Bradley A., Miyoshi, Kazuhisa   +2 more
core   +1 more source

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

The Early Upper Palaeolithic in British caves: problems and potential Le Paléolithique supérieur ancien dans les grottes de Grande‐Bretagne : problèmes et potentiels

Journal of the Royal Anthropological Institute, EarlyView.
Recent years have seen landmark progress in our understanding of early Homo sapiens occupation of Europe, owing to new excavations and the application of new analytical methods. Research on British sites, however, continues to lag. This is because of limitations inherent in existing cave collections, and limited options for new fieldwork at known sites.
Robert Dinnis
wiley   +1 more source

The Effects of Position on the Wear Debris Detection with Planar Inductor. [PDF]

Sensors (Basel), 2019
Yin Y, Liu Z, Zheng J, Chen L, Wu S, Wang S, Yan Z, Pan X.   +7 more
europepmc   +1 more source

125 years of exploration and research at Gough's Cave (Somerset, UK) 125 ans d'exploration et de recherches à Gough's Cave (Somerset, Royaume‐Uni)

Journal of the Royal Anthropological Institute, EarlyView.
Our understanding of the recolonization of northwest Europe in the period leading up to the Lateglacial Interstadial relies heavily on discoveries from Gough's Cave (Somerset, UK). Gough's Cave is the richest Late Upper Palaeolithic site in the British Isles, yielding an exceptional array of human remains, stone and organic artefacts, and butchered ...
Silvia M. Bello, Mark D. Lewis, Simon A. Parfitt   +2 more
wiley   +1 more source

VISUAL NEGOTIATIONS OF GENTRIFICATION IN TORONTO: Contestation, Politicization and Resistance through Urban Signage

International Journal of Urban and Regional Research, EarlyView.
Abstract This article engages signage as a medium through which urban stakeholders negotiate the politics of housing redevelopment and gentrification in cities. Focusing on Toronto, we examine housing‐related signage in three neighbourhoods where social mix approaches to redevelopment have ushered in gentrification: Parkdale, Regent Park, and Moss Park.
Lindi Jahiu, Jonathan Cinnamon, Agnieszka Leszczynski   +2 more
wiley   +1 more source

From a clinical case to a general methodology to analyze prosthetic joint failure, by micro- and nano-characterization with SEM of intra-tissue wear debris. [PDF]

Appl Microsc
Tarter S, Maines L, Nollo G, Molinari M, Gialanella S.   +4 more
europepmc   +1 more source

Bridging the Late Antique Gap in Northwest Arabia: New Archaeological Evidence on the Occupation of Wādī al‐Qurā (al‐ʿUlā [AlUla], Saudi Arabia) Between the Third and Seventh Centuries CE

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT In 2019, the Dadan Archaeological Project (CNRS/RCU/AFALULA) identified a Late Antique village 1 km south of ancient Dadan in the al‐ʿUlā valley (northwest Saudi Arabia). Three excavation seasons at this site (2021–2023) have uncovered a massive building constructed in the late third or early fourth cent.
Jérôme Rohmer, Abdulrahman Alsuhaibani, Charlène Bouchaud, Elora Chambraud, Vladimir Dabrowski, Hatem Djerbi, Fabien Lesguer, Hervé Monchot, Paul Picavet, Louise Purdue, Bertrand Riba, Shadi Shabo   +11 more
wiley   +1 more source