Results 91 to 100 of about 78,062 (293)

Failure Investigation of Alloy 625 Sockolets After Prolonged Service in an Ammonia Cracker Unit

Materials and Corrosion, EarlyView.
The failure of the sockolets was caused by intergranular cracking and fracture. The thick and highly brittle nitrided layer formed intergranular surface cracks, which propagated along grain boundaries into the base alloy substrate due to the presence of brittle Cr‐rich carbides. ABSTRACT Several sockolets of Alloy 625 operating at 540°C in contact with
Kamlesh Chandra, N. Naveen Kumar, Niraj Kumar   +2 more
wiley   +1 more source

Overcoming Challenges in 3D Printing of Polyolefins and Their Composites: A Review on Strategies for Improved Printability and Performance

Polymer Engineering &Science, EarlyView.
This review integrates the molecular fundamentals, key challenges, and mitigation strategies in polyolefin 3D printing, focusing on shrinkage, warpage, and adhesion control. It highlights material design approaches using recycled polyolefins and functional fillers to improve printability, mechanical properties, and sustainability in additive ...
Malik Hassan, Philip McMorran, Marwan Eid, Julia Blair, Amar K. Mohanty, Manjusri Misra   +5 more
wiley   +1 more source

Comparing Enamel Microhardness in Decidous Teeth With Primary Carious Lesions After Applying Three Fluoride Containing Materials in Vitro

Majallah-i dānishgāh-i ̒ulūm-i pizishkī-i Arāk, 2021
Background and Aim: For decades, using fluoride has been introduced to prevent the development and progression of primary carious lesions. Increased surface microhardness of primary caries is among the essential factors in preventing lesion progression ...
Puran Azadi, Hamid Sarlak, Shima Nourmohammadi   +2 more
doaj  

Influence of Higher Tramp Element Level on the Weldability of Automotive Steels

steel research international, EarlyView.
The use of green recycled steels is constantly expanding in the automotive industry. The increase in tramp elements resulting from the recycling of steel is problematic. Tramp elements can lead to a negative influence on the weldability. To understand the influence, the welding properties of three green steels are characterized. The potential limits of
Elias Gebhard Vogt, Patrick Veyel, Lars Gebel, Christian Meyer, Robert Thomas, Michael Thomas, Christoph Herrmann   +6 more
wiley   +1 more source

Characterization of the mechanical behaviour of both fusion zone and base metal of electron beam welded TA6V titanium alloy [PDF]

, 2010
The fusion zone of an electron beam welded Ti-6Al-4V alloy presents a a' martensitic structure which leads to a change of mechanical properties. Starting from two manufacturing processing routes for the alloy (1) a b processing followed by the weld ...
Andrieu, Eric, Audion, Sylvain, Buirette, Christophe, Huez, Julitte, Pérusin, Simon   +4 more
core   +3 more sources

Influence of Viscous Dissipation on Wear Behavior and Hardness Evolution of Tool Steels in Glass‐Fiber‐Reinforced Polymer Processing

steel research international, EarlyView.
Tool steels tested under injection molding conditions with glass‐fiber‐reinforced polymers, revealing how viscous dissipation drives hardness loss, even in PM grades. A sharp rise in wear with increasing injection volume rate and thermomechanical load uncovers striking material differences.
David Zidar, Roman Staudigl, Walter Friesenbichler, Clemens Holzer   +3 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

Microstructure, Defects, and Fatigue Response of High‐Strength Tool Steels

steel research international, EarlyView.
The martensitic tool steel family is designed for use in various working environments where they are subjected to repeatedly high mechanical loads. Despite the continuous upgrade of material´s microstructures through compositional development or processing techniques, defects remain a critical factor for the tool performance by leading to fatigue ...
Katerina Chantziara, Jens Bergström, Dimitrios Nikas, Mikael Thomas Grehk   +3 more
wiley   +1 more source

The micromechanical properties of GaP single crystals exposed to pulsed laser irradiation

Moldavian Journal of the Physical Sciences, 2011
The results of pulsed laser radiation action (UV region) on the mechanical properties (microhardness, fragility, density, and behavior of dislocations) of GaP crystals are presented.
Jitaru, Raisa, Pîşkin, Serghei, Racu, Andrei   +2 more
doaj  

Photoplastic effects in chalcogenide glasses: A review

, 2009
A synopsis of the various photoinduced changes of rheological, mechanical and elastic properties is presented in the first part of the article. After a critical appraisal of a large body of experimental data it suggested that the photoviscous effect ...
Asahara, Berkes, Borisova, Busse, Carlsson, Carlsson, Deryagin, Emelianova, Fritzsche, Fritzsche, Gerasimov, Goryuonova, Grenet, Gump, Hari, Hisakuni, Igo, Ihm, Ikeda, Ikeda, Kastrissios, Kastrissios, Kastrissios, Kastrissios, Kolobov, Kolomiets, Kolomiets, Kolomiets, Koseki, Koseki, Krecmer, Kruglov, Kryshenik, Kuczynski, Kyriazis, Küsters, Larmagnac, Manika, Manika, Matsuda, Matsuda, Natansohn, Natansohn, Nemilov, Osipyan, Osipyan, Ossipyan, Ovshinsky, Poborschii, Repka, Rykov, Salminia, Shimakawa, Shimakawa, Tagantsev, Tagantsev, Tagantsev, Tanaka, Tanaka, Tanaka, Trunov, Trunov, Trunov, Trunov, Trunov, Trunov, Trunov, Trunov, Vonwiller, Wolf, Wolf, Yannopoulos, Yannopoulos, Yu, Ziman   +74 more
core   +1 more source