Results 71 to 80 of about 80,900 (240)

Evaluation of Flexural Strength and Vickers Micro Hardness of Three Different Denture Base Resin Materials

Journal of Pharmacy and Bioallied Sciences
Objectives: To evaluate the Vickers hardness and flexural strength of computer-aided design/computer-aided manufacture (CAD/CAM) milled, 3D-printed, and traditional heat-polymerized denture base resins used in computer-aided design and manufacture ...
Mohammed Ibrahim Mathar, Manish Chadha, AlMoataz Mohamed Amin Soliman, Saif H. Alharbi, R. Murali Karthik, Mohammed Ziauddeen Mustafa   +5 more
doaj   +1 more source

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

Vickers microhardness comparison of 4 composite resins with different types of filler.

, 2015
Composite resins are the material of choice to restore minimal invasive cavities; conversely, it is important to explore the mechanical properties of commercially available dental materials.
Rogelio Scougall-Vilchis, Laura Acosta-Torres, Javier de la Fuente-Hernández, Rigoberto García-Garduño, María Arenas-Arrocena, René García-Contreras   +5 more
core   +2 more sources

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

Vickers microhardness studies of Fe-Mn binary alloys

, 2020
The room temperature microhardness of Fe-Mn binary alloys with different compositions was measured using a Vickers microhardness tester in the applied load ranging from 0.245 to 4.9 N. A significant indentation size effect was observed for each sample at
Ucar, Nazım, UZUN, Orhan, BEKTES, Musa, AKTURK, Selçuk, EKINCI, Ali Ercan   +4 more
core  

Effect of Double Annealing on the Microstructure and Mechanical Properties of a Medium Manganese Steel

steel research international, EarlyView.
A double intercritical annealing strategy is proposed to tailor the multiphase microstructure and mechanical response of a medium‐Mn steel. The treatment produces an ultrafine mixture of ferrite, martensite and multiple austenite populations with graded thermal and mechanical stability, formed through austenite reversion and controlled retransformation.
Mattia Franceschi, Jose A. Jimenez, Carlos Garcia‐Mateo, Radhakanta Rana   +3 more
wiley   +1 more source

Effect of modeling liquids on Vickers microhardness, flexural strength and color stability of resin-based composites

Materials Research Express
In this study, the effects of different modeling liquids (MLs) on the Vickers microhardness, flexural strength and color stability of different resin-based composites (RBCs) were investigated.
Ahmed Alshawi, Benin Dikmen, Sevda Ozel Yildiz, Ugur Erdemir   +3 more
doaj   +1 more source

Microhardness, Structure, and Morphology of Primary Enamel after Phosphoric Acid, Self-Etching Adhesive, and Er:YAG Laser Etching

International Journal of Optics, 2017
Background. Phosphoric acid is the traditional etching agent; self-etching adhesives and Er:YAG laser are alternative methods. Knowledge of deciduous enamel etching is required. Aim.
María del Carmen Zoila Alcantara-Galeana, Rosalía Contreras-Bulnes, Laura Emma Rodríguez-Vilchis, Manuel Eduardo Espinosa-Pesqueira, Cecilia Carlota Barrera-Ortega, Itzel Monserrat López-Hurtado, Adriana Fernández-Bobadilla   +6 more
doaj   +1 more source

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

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

steel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source