We have evaluated local elastic properties at kink boundaries in dilute Mg–Zn–Y alloys based on scanning transmission electron microscopy (STEM), first-principles calculations, and geometrical phase analysis (GPA) by measuring atomic-scale strain fields around dislocation cores. STEM observations showed that dislocations constituting are extended into Shockley partial accompanying solute-enrich...

in this paper, a novel method of producing bi-metallic alloy nanoparticles at low temperatures using hydrogen bombardment of thin films, deposited on glass substrates, is introduced. optical and morphological characteristics of the nanoparticles were extensively studied for various conditions of plasma treatment, such as plasma power density, temperature, duration of hydrogen bombardment, thick...

the openings of copper converter in sarcheshmeh copper complex in iranis made of a heat resisting austenitic steel (fe-25cr-12ni) and many failures have been reported. understanding the failure mechanism of the alloy helps to develop better alloys for similar complex environments. samples of as-cast alloy and those taken from failed ones were examined. optical microscopy (om), x-ray diffraction...

Nanoscale precipitation is one of the most widely used microstructural tools to manipulate properties metallic alloys, and especially reach high strength. Optimal microstructures are reached through complex solid state phase transformations involving non-isothermal heat treatments, metastable phases, chemistry, non-equilibrium vacancies, interaction with structural defects. These controlled by ...

Precipitation process leading to the formation of long-period stacking ordered (LPSO) structures in dilute MgGdZn and MgYZn alloysMgGdZn, MgYZn, LPSO alloy during heating at a rate 10 K/min have been examined by situ synchrotron radiation small- wide-angle scatteringSynchrotron small-angle scattering measurements. Samples were solution-treated quenched prior During heating, two distinct tempera...

Dilute nitride GaInNAs and GaInNAsSb alloys grown on GaAs have quickly become excellent candidates for a variety of lower cost 1.2–1.6mm lasers, optical amplifiers and highpower Raman pump lasers that will be required to power the Internet and advanced communications systems capable of delivering multi-Gbit/s data rates to the desktop. Two particularly critical devices are vertical-cavity surfa...

HYDROGEN interaction with amorphous alloys has Ribbons (,25-mm thick) of amorphous Fe80B11Si9 were been studied extensively due to both scientific and technoused for this research. The ribbons were produced by planarlogical interest. In the framework of a more comprehensive flow casting and were kindly supplied by AlliedSignal Inc. investigation of hydrogen interaction with amorphous and (Parsi...