Results 11 to 20 of about 5,812 (219)

The Effect of Temperature on the Electrochemical Behavior of the V(IV)/V(V) Couple on a Graphite Electrode

International Journal of Electrochemical Science, 2011
The electrochemical behavior of the V(IV)/V(V) couple in an aqueous solution of 2 mol dm-3 H2SO4+2 mol dm-3 VOSO4 on a graphite electrode at different temperatures is studied by steady-state polarization and electrochemical impedance spectroscopy.
Liu Hui-jun, Xu Qian, Yan Chuan-wei, Cao Ya-zhe, Qiao Yong-lian   +4 more
doaj   +1 more source

Influence of Solidification Parameters on the Amount of Eutectic and Secondary Arm Spacing of Al–7wt% Si Alloy Solidified under Microgravity

Crystals, 2022
During the solidification of hypoeutectic Al–7% Si alloy, density differences develop in the melt due to variations in concentration and temperature. On Earth, melt flow can occur due to gravity, which then affects the solidification process.
András Roósz, Arnold Rónaföldi, Yuze Li, Nathalie Mangelinck-Noël, Gerhard Zimmermann, Henri Nguyen-Thi, Mária Svéda, Zsolt Veres   +7 more
doaj   +1 more source

Microstructure Analysis of Al-7 wt% Si Alloy Solidified on Earth Compared to Similar Experiments in Microgravity

Crystals, 2022
During ground-based solidification, buoyancy flow can develop by the density difference in the hypoeutectic type of the alloys, such as Al-7 wt% Si alloy.
András Roósz, Arnold Rónaföldi, Yuze Li, Nathalie Mangelinck-Noël, Gerhard Zimmermann, Henri Nguyen-Thi, Mária Svéda, Zsolt Veres   +7 more
doaj   +1 more source

Factors Affecting the Mechanical Performance of High Manganese Austenitic Steel

Metals, 2022
High manganese austenitic steel has attracted increasing attention for its application in liquefied natural gas storage tank materials due to its excellent ductility and low cost. This paper presents an overview of the research progress of high manganese
Lei Xia, Ling Yan, Hongmei Zhang, Yan Li, Zhengyi Jiang, Guanglong Li   +5 more
doaj   +1 more source

The effect of deformation temperature on recrystallization in a Ni-based single crystal superalloys

Materials & Design, 2022
A series of experiments have been carried out to investigate the effect of deformation temperature on the recrystallization of nickel-based single crystal superalloys using isothermal (compression) and non-isothermal (directional solidification ...
Wei Xiong, Zaiwang Huang, Guang Xie, Zhicheng Ge, Xin Wang, Yuzhang Lu, Wei Zheng, Langhong Lou, Jian Zhang   +8 more
doaj   +1 more source

Ion Release and Surface Characterization of Nanostructured Nitinol during Long-Term Testing

Nanomaterials, 2019
The corrosion resistance of nanostructured nitinol (NiTi) was investigated using long-term tests in solutions simulating physiological fluids at static conditions, reflecting the material structure and metal concentration in the solutions.
Elena O. Nasakina, Maria A. Sudarchikova, Konstantin V. Sergienko, Sergey V. Konushkin, Mikhail A. Sevost’yanov   +4 more
doaj   +1 more source

Influence of Isothermal ω Transitional Phase-Assisted Phase Transition From β to α on Room-Temperature Mechanical Performance of a Meta-Stable β Titanium Alloy Ti−10Mo−6Zr−4Sn−3Nb (Ti-B12) for Medical Application

Frontiers in Bioengineering and Biotechnology, 2021
The microstructural evolution and tensile performance of a meta-stable β-type biomedical Ti−10Mo−6Zr−4Sn−3Nb (Ti-B12) alloy subjected to one-stage aging (OSA) and two-stage aging (TSA) are investigated in this work.
Jun Cheng, Jun Cheng, Jinshan Li, Sen Yu, Zhaoxin Du, Xiaoyong Zhang, Wen Zhang, Jinyang Gai, Hongchuan Wang, Hongjie Song, Zhentao Yu   +10 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Optimisation of Aluminium Alloy Variable Diameter Tubes Hydroforming Process Based on Machine Learning

Applied Sciences
To predict the forming behaviour of aluminium alloy variable diameter tubes during hydroforming, a genetic algorithm-enhanced particle swarm optimisation (GA-PSO) is used to optimise a backpropagation neural network (BP-NN). A fast prediction model based
Yong Xu, Xuewei Zhang, Wenlong Xie, Shihong Zhang, Yaqiang Tian, Liansheng Chen   +5 more
doaj   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source