Results 61 to 70 of about 46,081 (250)

Mesh-Architected Structurally Flexible Pb(Zr0.52Ti0.48)O3 Framework Enables Highly Sensitive and Stretchable Piezoelectric Sensors

Nano-Micro Letters
Highlights A monolithic, structurally flexible, continuous Pb(Zr0.52Ti0.48)O3 (PZT) piezoelectric fiber was innovatively fabricated through network architecture design.
Li Zeng, Chenhui Jiang, Yuan Li, Hao Yin, Qichao Li, Hezhou Liu, Yiping Guo   +6 more
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

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

Microstructure and mechanical properties of in-situ TiB2/A356 composites and a prediction model of yield strength [PDF]

China Foundry, 2015
The in-situ TiB2/A356 composites were successfully synthesized through the mixed salt reaction method. The advantage of this technique was that the particle sizes and morphology can be controlled by the melt reaction.
Yi-jie Zhang, Ming-liang Wang, Xian-feng Li   +2 more
doaj  

CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries

Nano-Micro Letters, 2014
CoFe2O4-graphene nanosheets (CoFe2O4-GNSs) were synthesized through an ultrasonic method, and their electrochemical performances as Li-ion battery electrode were improved by annealing processes.
Yinglin Xiao, Xiaomin Li, Jiantao Zai, Kaixue Wang, Yong Gong, Bo Li, Qianyan Han, Xuefeng Qian   +7 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

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Radiative Cooling Materials for Extreme Environmental Applications

Nano-Micro Letters
Highlights Heat exchange mechanisms for enhancing cooling performance and environmental tolerance are elucidated. Challenges in extreme environments, along with the corresponding anti-environmental radiative cooling materials and micro-nano structures ...
Jianing Xu, Wei Xie, Hexiang Han, Chengyu Xiao, Jing Li, Yifan Zhang, Shaowen Chen, Binyuan Zhao, Di Zhang, Han Zhou   +9 more
doaj   +1 more source

Permanent porous hydrogen-bonded frameworks with two types of Brønsted acid sites for heterogeneous asymmetric catalysis

Nature Communications, 2019
The search for porous materials with strong Brønsted acid sites for challenging chemical reactions has been of significant interest, but remains challenging.
Wei Gong, Dandan Chu, Hong Jiang, Xu Chen, Yong Cui, Yan Liu   +5 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source