Results 41 to 50 of about 107,129 (303)

Electronic Structure, Localization and Spin-State Transition in Cu-substituted FeSe: Fe$_{1-x}$Cu$_x$Se

, 2009
We report density functional studies of the Fe$_{1-x}$Cu$_x$Se alloy done using supercell and coherent potential approximation methods. Magnetic behavior was investigated using the disordered local moment approach. We find that Cu occurs in a nominal $d^{
Chadov, S., Fecher, G. H., Felser, C., Schärf, D., Singh, D. J., Zhang, L.   +5 more
core   +1 more source

Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys [PDF]

, 2019
Guided by CALPHAD modeling, low-density and multiphase three novel High Entropy Alloys (HEAs), Al40Cu15Cr15Fe15Si15, Al65Cu5Cr5Si15Mn5Ti5 and Al60Cu10Fe10Cr5Mn5Ni5Mg5 were produced by large scale vacuum die casting. A mixture of simple and complex phases
Albizuri, Joseba, Garcia, Jose Carlos, Guraya, Teresa, Sanchez, Jon Mikel, Vicario, Iban   +4 more
core   +2 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Quantitative Study of Internal Defects in Copper Iron Alloy Materials Using Computed Tomography

Alloys
Semi-continuous casting is an important method for the large-scale production of high-strength conductive copper-iron (Cu-Fe) alloys in the future. However, serious peeling defects were found on the surface of cold-rolled strips during industrial trials.
Junli Guo, Qiang Hu, Kai Hu
doaj   +1 more source

Investigation of the Sn-0.7 wt.% Cu Solder Reacting with C194, Alloy 25, and C1990 HP Substrates

Metals, 2022
Cu-based alloys are one of the most promising substrates to enhance the performance of lead-frame materials. In the present study, the interfacial reactions in the Sn-0.7 wt.% Cu (SC) lead-free solder reacting with Cu-3.3 wt.% Fe (C194), Cu-2.0 wt.% Be ...
Andromeda Dwi Laksono, Tzu-Yang Tsai, Tai-Hsuan Chung, Yong-Chi Chang, Yee-Wen Yen   +4 more
doaj   +1 more source

Microstructure and chemical composition of Roman orichalcum coins emitted after the monetary reform of Augustus (23 B.C.) [PDF]

, 2019
A collection of ancient Roman orichalcum coins, i.e., a copper-zinc alloy, minted under the reigns from Caesar to Domitianus, have been characterised using scanning electron microscopy (SEM-EDS) and electron microprobe analysis (EMPA).
Catalli F., De Vito C., Di Fazio M., Felici A. C.   +3 more
core   +1 more source

On the Mechanical Properties of Cu-Fe Alloys

DENKI-SEIKO[ELECTRIC FURNACE STEEL], 1973
Mechanical properties, metallurgical structures and fiber textures of Cu-Fe alloys were investigated and the following results were obtained.(1) The quenched Cu-Fe alloys are harder than the slowly cooled Cu-Fe alloys after holding at the temperature range over the eutectic point, and the faster the cooling rate is, the larger the difference of ...
Shôichi Fukui, Toshiyuki Watanabe, Kenji Isokawa   +2 more
openaire   +2 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Effect of Al on the microstructure and high temperature oxidationperformance of Cu-20Ni-19Fe alloy

Journal of Hebei University of Science and Technology, 2021
In order to solve the problem of poor oxidation resistance of Cu-Ni-Fe inert anode at high temperature during aluminum electrolysis,Cu-20Ni-19Fe-xAl alloys (x=0%,6%,8%,10%) with different Al contents were prepared by vacuum melting method,and the alloys ...
Ying LIU, Zhimin LIANG, Liwei WANG, Zhenzhen PENG, Dianlong WANG   +4 more
doaj   +1 more source

Microstructure and corrosion evolution of additively manufactured aluminium alloy AA7075 as a function of ageing [PDF]

, 2019
Additively manufactured high strength aluminium alloy AA7075 was prepared using selective laser melting. High strength aluminium alloys prepared by selective laser melting have not been widely studied to date. The evolution of microstructure and hardness,
Birbilis, Nick, De Lima, Paula R., Gharbi, Oumaima, Jiang, Derui, Kairy, Shravan K., Nicklaus, Juan   +5 more
core   +1 more source