Results 111 to 120 of about 13,933 (129)

Two‐Stage Isothermal Transformation of Austenite into Nanobainite in a Chemically Inhomogeneous Medium‐Alloy Steel Containing 0.5 wt% C

steel research international, EarlyView.
The effect of chemical inhomogeneity on the microstructure and properties of nanobainitic steel is investigated. A two‐stage isothermal heat treatment that produced a more uniform microstructure is designed. The first‐stage temperature is higher than the MS of depleted bands; conversely, the second‐stage temperature is lower than the first‐stage ...
Bogdan Garbarz, Jarosław Marcisz, Marek Jelec, Władysław Zalecki, Radosław Rozmus, Zofia Kania‐Pifczyk   +5 more
wiley   +1 more source

Substitution of Ti by Nb in Maraging Steel: Effects on Strengthening Mechanisms and Crystallographic Behavior

steel research international, EarlyView.
This work demonstrates that replacing Ti with Nb in maraging steel forms nanoscale Nb–Mo particles along boundaries, strengthening the alloy without relying on Ti phases. Heat‐treatment tuning promotes uniform crystal orientation and balanced grain boundaries, enabling strong yet ductile behavior.
Mohamad Masoumi, Manoel José, Gerardo Jesus Aracena Pérez, Isabel Ferreira Barros, Marcos Natan da Silva Lima, Geronimo Perez, Samuel Lucas Santos Medeiros, Pedro Henrique Pinheiro Lima, Luís Flávio Gaspar Herculano, Maria Vittoria Moraschini Reis, Sérgio Souto Maior Tavares, Farina Alexandre Bellegard, Fridman Daniel Pallos, Miloslav Béreš, Hamilton Ferreira Gomes de Abreu   +14 more
wiley   +1 more source

In Situ Investigation of Microstructure Evolution and Stress Generation During Low‐Pressure Carburizing and Quenching by Means of Synchrotron X‐Ray Diffraction

steel research international, EarlyView.
This study uses in situ synchrotron X‐ray diffraction at the German Electron Synchrotron to analyze low‐pressure carburizing (LPC) in steels. The findings reveal surface carbon saturation and carbide formation kinetics, and phase‐specific stress development during quenching. The results show carbide kinetics depend on steel grade and size, while stress
Ogün Baris Tapar, Michael Georg Zürn, Jens Gibmeier, Antonio Carlos de Figueiredo Silveira, Matthias Steinbacher, Norbert Schell, Jérémy Epp   +6 more
wiley   +1 more source

The Hidden Dangers of Counterfeit and Replica‐Like Endodontic Files: A Scoping Review of Current Evidence

Australian Dental Journal, EarlyView.
ABSTRACT This scoping review mapped and critically appraised laboratory evidence on counterfeit and replica‐like nickel–titanium endodontic files, evaluating design, metallurgical composition, surface finishing, and mechanical performance to clarify clinical and regulatory implications.
Felipe Immich, Gustavo Henrique Longen, Carolyne Silveira da Motta, Bruna Cavalcante Chaves de Araújo, Giampiero Rossi‐Fedele, Lucas Peixoto de Araújo   +5 more
wiley   +1 more source

X-Ray Diffraction Study of the Reverse Martensitic Transformation In Cu-Al-Ni Shape Memory Alloy

The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2008
The paper presents an X ray diffraction study for a cooper based shape memory alloy. The behavior of CuAl13Ni4 alloy, which exhibits a peculiar property, is evaluated by structural changes.
Carmela GURAU, Gheorghe GURAU, F. M. Braz FERNANDES   +2 more
doaj  

Cyclic Plastic Material Behavior of Novel Austenitic (C + N) Steel Additively Manufactured by PBF‐LB/M

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT The newly introduced high manganese high strength (C + N) steel Printdur HSA was developed for the additive manufacturing process PBF‐LB/M. It consists of a fully austenitic grain structure. This study aims to evaluate the cyclic plastic material behavior of this (C + N) steel.
Jakob Blankenhagen, Mohammad Abankar, Johannes Diller, Dorina Siebert, Christina Radlbeck, Tomáš Kruml, Martin Mensinger   +6 more
wiley   +1 more source

Evaluation of the performance of ChatGPT‐4 and ChatGPT‐4o as a learning tool in endodontics

International Endodontic Journal, EarlyView.
Abstract Aims The aim of this study was to evaluate the accuracy and consistency of responses given by two different versions of Chat Generative Pre‐trained Transformer (ChatGPT), ChatGPT‐4, and ChatGPT‐4o, to multiple‐choice questions prepared from undergraduate endodontic education topics at different times of the day and on different days ...
Esra Arılı Öztürk, Ceren Turan Gökduman, Burhan Can Çanakçi   +2 more
wiley   +1 more source

Influence of Dual Heat Treatment on the Metallurgy and Mechanical Behaviour of Diamond‐Like Carbon–Coated NiTi Rotary Systems: A Multimethod Investigation

International Endodontic Journal, EarlyView.
ABSTRACT Aim To investigate how the application of dual heat treatment during the manufacturing process influences the mechanical performance (flexibility, cyclic fatigue resistance, torsional strength, bending, buckling and cutting efficiency) of rotary nickel‐titanium endodontic instruments. Methodology Rainbow One (n = 58) and Rainbow Ultra (n = 58)
Emmanuel João Nogueira Leal Silva, Thyago Oliveira Cardoso, Jorge N. R. Martins, Francisco Manuel Braz Fernandes, Victor Talarico Leal Vieira, Marco A. Versiani   +5 more
wiley   +1 more source

NUCLEATION PROBLEMS OF THE MARTENSITIC TRANSFORMATION IN STEEL

Advanced Engineering Research, 2013
A review of papers on martensitic transformations is presented. To clarify the martensite nucleation mechanism in iron-carbon steels on the basis of the currently established understanding is the main purpose of the review. The martensitic transformation
Victor Nikolayevich Pustovoyt, Yury Vyacheslavovich Dolgachev   +1 more
doaj  

Effect of Occlusal Adjustment and Subsequent Repolishing on the Translucency Parameter, Contact Angle, and Flexural Strength of Different Types of Glazed Monolithic Zirconia

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives This study evaluated the effects of material and surface condition (glazed vs. polished after simulated occlusal adjustment) on translucency parameter, contact angle, and flexural strength of four monolithic zirconia. Materials and Methods Disk‐shaped specimens (n = 80, Ø12 × 1 mm) were fabricated from four monolithic zirconia ...
Kelli Nunes Monteiro, Rafaela Paschoalin Nigro, Stéphanie Soares Favero, Ranulfo Benedito de Paula Miranda, Estevam Augusto Bonfante, Paulo Francisco Cesar   +5 more
wiley   +1 more source