Results 41 to 50 of about 15,535 (214)

Hierarchical Ordering Induced Ultrahigh Cryogenic Strength and Strain Hardening in a Ni2CoFeV Medium‐Entropy Alloy

Advanced Science, EarlyView.
A tri‐phase Ni2CoFeV medium‐entropy alloy with fcc, κ, and L12 phases achieves exceptional cryogenic strength‐ductility synergy at 77 K. It delivers a yield strength of 1.4 GPa, an ultimate tensile strength of 2.07 GPa and a tensile ductility of 28%.
Lei Gu, Wei Jiang, Qingzhong Mao, Xiang Chen, Yonghao Zhao   +4 more
wiley   +1 more source

Microstructural evolution of Mg-7Al-2Sn Mg alloy during multi-directional impact forging

Journal of Magnesium and Alloys, 2015
Multi-directional impact forging (MDIF) was applied to a Mg-7Al-2Sn (wt.%) Mg alloy to investigate its effect on the microstructural evolution. MDIF process exhibited high grain refinement efficiency.
M.G. Jiang, H. Yan, L. Gao, R.S. Chen
doaj   +1 more source

Wilbur Norman Christiansen 1913-2007

, 2011
W. N. ('Chris') Christiansen was an innovative and influential radio astronomy pioneer. The hallmarks of his long and distinguished career in science and engineering, spanning almost five decades, were his inventiveness and his commitment to, and success
Frater, R. H., Goss, W. M.
core   +1 more source

A Review of Overcurrent Protection in Smart Grids Under Cyber‐Physical Threats With a Cyber‐Physical Evaluation Framework

Energy Science &Engineering, EarlyView.
By manipulating current and voltage measurements, an assailant can induce unwanted relay action while attempting to avoid detection. Detecting advanced cyber intrusions in power protection environments requires specialised data analysis and anomaly detection methods.
Feras Alasali, Anas AlMajali, Naser Naily, Hassen Loukil, Salah AbuGhalyon, William Holderbaum, Abdelaziz Salah Saidi   +6 more
wiley   +1 more source

Crystallographic orientation and slip behavior of powder metallurgy Ti–6Al–4V via multi-directional forging

Journal of Materials Research and Technology
In this study, we present a microstructural and mechanical analysis of Ti–6Al–4V alloys processed by low-temperature multi-directional forging at 900 °C, achieving near-theoretical density (99.9%), with a tensile strength of 1070 MPa and elongation of 14.
Shangxing Qiu, Fang Yang, Yang Li, Wei Gou, Jinfeng Wang, Cunguang Chen, Xinhua Liu, Zhimeng Guo   +7 more
doaj   +1 more source

Changes of Microstructures and Mechanical Properties in Commercially Pure Titanium after Different Cycles of Proposed Multi-Directional Forging

Metals, 2019
A newly proposed multi-directional forging (MDF) was successfully applied to a commercially pure titanium (CP Ti). Severe plastic deformation would result in significant and complex changes of microstructure and mechanical properties, so microstructure ...
Zhanguang Zheng, Xiaoying Zhang, Liang Xie, Longgui Huang, Teng Sun   +4 more
doaj   +1 more source

Influence of thermomechanical processing on coarse particles, grain structure, and mechanical properties of Al–Cu alloy rings

Journal of Materials Research and Technology, 2023
Rings made of 2219 Al alloy are typically manufactured by multi-directional forging (MDF) and ring rolling at 460 °C, followed by heat treatment. However, this process often results in coarse elongated grains and a large number of coarse Al2Cu particles,
Wenxue Zhang, Hailin He, Youping Yi, Shiquan Huang   +3 more
doaj   +1 more source

Ch‐Ch‐Ch‐Ch‐Changes: The Impact of Supply Base Growth, Contraction, and Turnover on Firm Innovation

Journal of Operations Management, EarlyView.
ABSTRACT Modern supply chains are experiencing more disturbances due to regulatory shifts, rising sustainability standards, emerging or declining markets, and disruption to critical inputs. Some firms react by strengthening existing supplier partnerships to resist changes, while others reconfigure relationships with suppliers to embrace changes ...
Jordan M. Barker, Ellie C. Falcone, Yang Sophie Yang‐Sun, Tingting Yan   +3 more
wiley   +1 more source

The Role of Chemistry Across Disciplines From Humanities to Life Sciences in Understanding Complexity and Emergence

Angewandte Chemie, Volume 138, Issue 17, 20 April 2026.
This study explores the origins of life by linking prebiotic chemistry, the emergence of information‐carrying molecules such as RNA and proteins, and philosophical questions about consciousness. The study emphasizes the role of molecular evolution in the Central Dogma and provides insights into the chemical origins of biology and the basis of life's ...
Harald Schwalbe, Josef Wachtveitl, Alexander Heckel, Florian Buhr, Sabrina Toews, Thomas M. Schimmer   +5 more
wiley   +2 more sources

Reconceptualising temporality in young lives: exploring young people’s current and future livelihoods in AIDS-affected southern Africa [PDF]

, 2013
In recent years, anxieties have been expressed that the impacts of southern Africa's AIDS pandemic on young people today will damage their future livelihood prospects.
Abebe, Abebe, Abebe, Ainsworth, Ansell, Ansell, Bailey, Bissell, Blerk, Blerk, BOS, Bourdillon, Boyden, Bryceson, Cass, Chambers, Chant, Conticini, Crush, Dahlblom, Dorward, Evans, Grieco, Grosz, Haan, Hajdu, Hampshire, Harker, Heady, Hopkins, Horton, Horton, Jaiyebo, James, Jeffrey, Johnson-Hanks, Katz, Kesby, Langevang, Langevang, Lefoka, Loevinsohn, Mabala, MacDonald, Murray, Pain, Punch, Republic of Malawi, Robson, Robson, Teather, UNAIDS, Uprichard, Valentine, Worth, Yin   +55 more
core   +2 more sources