Results 71 to 80 of about 33,857 (279)

Effects on hardness and microstructure of AISI 1020 low-carbon steel processed by high-pressure torsion

Journal of Materials Research and Technology, 2017
Low-carbon steel AISI 1020 was subjected to high-pressure torsion (HPT) with 6.0 GPa pressure through 1/4–5 turns. The microstructures of the samples in each turn were studied by means of X-ray diffraction (XRD) analyzing the changes in micro-strain ...
Diana Maritza Marulanda Cardona, Jittraporn Wongsa-Ngam, Hernando Jimenez, Terence G. Langdon   +3 more
doaj   +1 more source

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

Examining the microhardness evolution and thermal stability of an Al–Mg–Sc alloy processed by high-pressure torsion at a high temperature

Journal of Materials Research and Technology, 2017
An Al–3% Mg–0.2% Sc alloy was solution treated and processed through 10 turns of high-pressure torsion (HPT) at 450 K. Afterwards, the HPT-processed alloy was annealed for 1 h at temperatures ranging from 423 to 773 K and its mechanical properties
Pedro Henrique R. Pereira, Yi Huang, Terence G. Langdon   +2 more
doaj   +1 more source

Structural Characteristics of Multilayered Ni-Ti Nanocomposite Fabricated by High Speed High Pressure Torsion (HSHPT)

Metals, 2020
It is generally accepted that severe plastic deformation (SPD) has the ability to produce ultrafinegrained (UFG) and nanocrystalline materials in bulk. Recent developments in high pressure torsion (HPT) processes have led to the production of bimetallic ...
Gheorghe Gurau, Carmela Gurau, Francisco Manuel Braz Fernandes, Petrica Alexandru, Vedamanickam Sampath, Mihaela Marin, Bogdan Mihai Galbinasu   +6 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Development of nanostructured W and WL10 by high-pressure torsion [PDF]

, 2014
Nanostructured W and WL10 are fabricated by high-pressure torsion. Grains are refined from initial coarse range (10µm) to nanometers scale (80nm-400nm). Influences of original microstructure, alloying, process temperature and strain path are investigated.
Wang, Yiming
core   +2 more sources

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Production of High Strength Materials Using High-Pressure Torsion [PDF]

, 2012
In the investigation of this thesis, the bcc structured refractory metals of 5th and 6th groups in the periodic table, V^2^3, Cr^2^4, Nb^4^1, Mo^4^2 and Ta^7^3 are subjected to high-pressure torsion (HPT) process at room temperature to produce ultrafine ...
イ, スンウォン, Lee, Seungwon, 李, 昇原   +2 more
core  

Defects in Ultra-Fine Grained Mg and Mg-Based Alloys Prepared by High Pressure Torsion Studied by Positron Annihilation [PDF]

, 2005
Despite the favourable strength and thermal stability, a disadvantage of the Mg-based alloys consists in a low ductility. Recently it has been demonstrated that ultra fine grained metals with grain size around 100 nm can be produced by high pressure ...
Smola, B., Kulyasova, O., Cherkaska, V., Čížek, J., Procházka, I., Stulíková, I., Matěj, Z., Kužel, R., Islamgaliev, R.   +8 more
core   +1 more source

Continuous high-pressure torsion using wires [PDF]

Journal of Materials Science, 2011
A newly developed severe plastic deformation method, continuous high-pressure torsion (CHPT), was modified for continuous processing of metallic wires. In this study, using the CHPT, wires of high-purity aluminum (99.99%) and copper (99.999%) with diameters of 2 mm and total lengths of 100 mm were successfully processed by employing the same features ...
Kaveh Edalati, Seungwon Lee, Zenji Horita   +2 more
openaire   +1 more source