Results 61 to 70 of about 122,488 (257)

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

Structural Design and Tailoring of Composites to Obtain near Zero Coefficient of Linear Thermal Expansion

Механика машин, механизмов и материалов, 2019
The paper discusses the realization of high dimensional stability of products, including minimization of thermal strains by the use of additives having negative coefficient of linear thermal expansion, as well as auxetics having negative Poisson’s ratio.
Sergey V. Shil’ko, Ekaterina M. Petrokovets, Qiang Zhang   +2 more
doaj  

Improvement of Hydrophobicity and Dimensional Stability of Thermally Modified Southern Pine Wood Pretreated with Oleic Acid

BioResources, 2014
The present work used a combined approach of oleic acid (OA) impregnation and thermal modification to improve the hydrophobicity and dimensional stability of southern pine (Pinus spp.).
Yuan Zhu, Wang Wang, Jinzhen Cao
doaj   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Propriedades físicas da madeira termorretificada de quatro folhosas

Floresta e Ambiente
O presente estudo objetivou analisar propriedades físicas da madeira termorretificada de quatro eucaliptos. Dessa maneira, foram selecionadas 20 árvores com aproximadamente 60 anos de idade de Eucalyptus botryoides, Corymbia citriodora, Eucalyptus ...
Rafael de Avila Delucis, Darci Alberto Gatto, Pedro Henrique Gonzalez de Cademartori, André Luiz Missio, Eduardo Schneid   +4 more
doaj   +1 more source

Study of Thermal Stress Influence on Dimensional Stability of Silicone Molds

Research Papers Faculty of Materials Science and Technology Slovak University of Technology, 2014
Abstract The paper is focused on the study of temperature influence on dimensional stability of silicone molds used for spin casting of the low melting points alloys. The silicone material denoted as TEKSIL Silicone-GP-S was used to produce samples during experiments. The samples were heated to temperatures in the range from 100 up to
Martin Bajčičák, Roland Šuba
openaire   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Research on internal stress evolution mechanism in thermal processing of large precision machine tool components

Case Studies in Thermal Engineering
Residual stresses in large-scale structural components are recognized as critical compromisers of dimensional stability and operational longevity in precision machine tools.
Jihao Duan, Penggang Ma, Gaochen Zhang, Feng Gao, Yan Li, Zhuofan Wu   +5 more
doaj   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source