Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Tarek Allam"'
Autor:
Walaa Abd-Elaziem, Atef Hamada, Tarek Allam, Moustafa M. Mohammed, Mohammad Abd-El Hamid, Sally Samah, Doaa Wasfy, Moustafa A. Darwish, Y Omayma Abd Elguad El-Kady, Sally Elkatatny
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 473-484 (2024)
The increasing demand for materials possessing enhanced mechanical strength, high thermal conductivity, and excellent electrical properties has grown significantly. Cu-matrix composites, especially Cu– Ni, present a promising candidate to fulfill t
Externí odkaz:
https://doaj.org/article/03ba4419781f4357a3d84d6493900652
Autor:
Walaa Abd-Elaziem, Sally Elkatatny, Abd-Elrahim Abd-Elaziem, Mahmoud Khedr, Marwa A. Abd El-baky, Mohamed Ali Hassan, Mohamed Abu-Okail, Moustafa Mohammed, Antti Järvenpää, Tarek Allam, Atef Hamada
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 681-707 (2022)
Laser powder bed fusion (LPBF) is the most common metal additive manufacturing technique. Following pre-programmed designs, it employs a high-power density laser source to melt pre-alloyed or mixed powders layer by layer, allowing for complex metalli
Externí odkaz:
https://doaj.org/article/49512b6864b3483b9e6e67765705a0e0
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 521-536 (2022)
Gold-nickel coatings (Au–Ni) were applied by electrodeposition (ED) and electroless deposition (ELD) on additively manufactured (AM) AlSi10Mg alloy to improve the electrical conductivity and electrochemical behavior. Characterization of the Au–Ni
Externí odkaz:
https://doaj.org/article/3e8b2f87b730425686fddddbb7ade1c7
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 2601-2613 (2022)
Breaking the strength-ductility paradox of very-low (≤0.05 wt.%)-C medium (3–12 wt.%)-Mn steels (MMnS) has been a hard-wired topic, since in these steels multi-step heat treatments are usually required to obtain austenite for improved ductility a
Externí odkaz:
https://doaj.org/article/46be2df9031c4b1399a1fa50dde0d1d2
Autor:
Tarek Allam, Wolfgang Bleck, Christian Klinkenberg, Björn Kintscher, Ulrich Krupp, Jenny Rudnizki
Publikováno v:
Journal of Materials Research and Technology, Vol 15, Iss , Pp 292-305 (2021)
The continuous casting behavior of medium manganese steels (MMnS: 6Mn, 6Mn–1Si, 6Mn–1Si–1Al, 10Mn–1Si and 10Mn–1Si–1Al) have been investigated and compared with unalloyed carbon steel C30. A series of in-situ melting/re-solidification hot
Externí odkaz:
https://doaj.org/article/7d7a9e6dfb414c98936ebe53a4fd4a10
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 13524-13538 (2020)
This paper discusses the avoidance of hydrogen embrittlement (HE) in a medium manganese stainless steel X20CrNiMnVN18-5-10. We adopted a HE-mitigation strategy that relies on improving its intrinsic resistance to hydrogen by adjusting an ultrafine mi
Externí odkaz:
https://doaj.org/article/5e3b322a844b4c5eb5c67600fb458111
Publikováno v:
Metals, Vol 11, Iss 12, p 1888 (2021)
Developing medium-Mn steels (MMnS) demands a better understanding of the microstructure evolution during thermo-mechanical treatments (TMTs). This study demonstrates the relationship among processing, microstructure, and mechanical properties of a wa
Externí odkaz:
https://doaj.org/article/278fe52b23474edc8a6277d38428f19a
Publikováno v:
Metals, Vol 11, Iss 2, p 246 (2021)
Two B400B-R and B500B grade rebars were industrially produced through a Tempcore process. The standard chemical composition of B500B grade was additionally alloyed with 0.067 wt.% V to enhance its mechanical properties. A set of optimized processing
Externí odkaz:
https://doaj.org/article/f0da84b9afd34ce6a02ca1616c3a8cbe
Autor:
Mohamed Mohamed Zaky Ahmed, Sabbah Ataya, Mohamed Mohamed El-Sayed Seleman, Tarek Allam, Naser Abdulrahman Alsaleh, Essam Ahmed
Publikováno v:
Metals, Vol 11, Iss 2, p 181 (2021)
This work investigated the effect of friction stir welding (FSW) tool rotation rate and welding speed on the grain structure evolution in the nugget zone through the thickness of the 10 mm thick AA5083/AA5754 weldments. Three joints were produced at
Externí odkaz:
https://doaj.org/article/950d288c54784854bbf1318e8d1c0009
Autor:
Tarek Allam, Xiaofei Guo, Simon Sevsek, Marta Lipińska-Chwałek, Atef Hamada, Essam Ahmed, Wolfgang Bleck
Publikováno v:
Metals, Vol 9, Iss 6, p 705 (2019)
A novel medium manganese (MMn) steel with additions of Cr (18%), Ni (5%), V (1%), and N (0.3%) was developed in order to provide an enhanced corrosion resistance along with a superior strength−ductility balance. The laboratory melted ingots were ho
Externí odkaz:
https://doaj.org/article/aef5797eccf14a00ae3549dd1e15621e