Results 91 to 100 of about 94,140 (312)

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Morphology of plastic deformation and fracture of a biodegradable biopolymer

, 2009
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is becoming a hope for the development of sustainable products because it is produced from renewable resources, is completely biodegradable and can be molded as a petrochemical thermoplastic.
Hermida, Elida Beatriz, Casariego, Vanesa   +1 more
core  

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Molecular dynamics simulation of fracture strength and morphology of defective graphene

, 2012
Different types of defects can be introduced into graphene during material synthesis, and significantly influence the properties of graphene. In this work, we investigated the effects of structural defects, edge functionalisation and reconstruction on ...
Ma, Lin, Yan, Cheng, Wang, Mingchao, Hu, Ning   +3 more
core  

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Effect of Strain-Rate on the Fracture Morphology of LY2 Aluminum Alloy by Laser Shock Processing

, 2011
The strain-rate sensitivity of LY2 aluminum (Al) alloy subjected to laser shock processing (LSP) was investigated according to the fracture morphology at strain-rates ranging from 0.00001 s-1 to 0.1 s-1.
X.G. Cui, Jin Zhon Lu, L. Zhang, Yong Kang Zhang, Kai Yu Luo, J.W. Zhong   +5 more
core   +1 more source

Influence of Hydrogen Environment on Mechanical Properties of High-Grade Pipeline Steel

Shiyou jixie, 2023
Under the context of carbon peaking and carbon neutrality targets, hydrogen blending in natural gas pipelines will become the primary means of large-scale, long-distance hydrogen transportation in the future.However, the introduction of hydrogen will ...
Ai Hongni, Zhang Dong, Yu Haobo, Peng Shiyao, Ouyang Xin, Zhang Duihong, Liu Xiaoben   +6 more
doaj  

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Fracture morphology of variable pumping-rate hydraulic fracturing in middle and deep coal reservoirs

Petroleum Exploration and Development
Outcrop coal samples from the Shizhuang South Block of the Qinshui Basin, Shanxi Province, China, were subjected to true triaxial hydraulic fracturing experiments to simulate frature propagation.
Shikang LIU, Yushi ZOU, Wenfeng MA, Shicheng ZHANG, Xuan WANG, Mingzhe HAN, Budong GAO   +6 more
doaj   +1 more source

High-Frequency Ultrasonic Impact Treatment Effect on Fatigue Properties of TC4 Titanium Alloy Laser Wire Filling-Welded Joints [PDF]

Archives of Metallurgy and Materials
This study aimed to improve the fatigue properties of TC4 titanium alloy laser-filled wire welded joints. To this end, the highfrequency ultrasonic impact technology (UIT) was used to implement post-weld impact treatment on the welded part ...
Aiyong Cui, Jialei Zhao, Borong Shan, Haodong Liu, Weiqi Sun, Fangyou Hu, Huakai Wei   +6 more
doaj   +1 more source