The interplay between solute atoms and vacancy clusters in magnesium alloys
نویسندگان
چکیده
Atomic-scale calculations indicate that both stress effects and chemical binding contribute to the redistribution of solute in presence vacancy clusters magnesium alloys, leading segregation driven by thermodynamics. As size cluster increases, becomes more important relative stress. These solute–vacancy interactions also impact diffusivity vacancies a solid solution. Simulations show atoms accelerate mono-vacancy diffusion but decelerate clusters. result, facilitate clustering stabilize resulting clusters, increasing their potential promote serve as heterogeneous nucleation sites during precipitation. Experimental observation simultaneously deformed aged Mg–Al alloys provides support for this mechanism.
منابع مشابه
Effects of vacancy-solute clusters on diffusivity in metastable Fe-C alloys
Citation Kabir, Mukul et al. " Effects of vacancy-solute clusters on diffusivity in metastable Fe-C alloys. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Diffusi...
متن کاملthe relationship between learners critical thinking ability and their performance in the reading sections of the tofel and ielts test
the study reflected in this thesis aims at finding out relationships between critical thinking (ct), and the reading sections of tofel and ielts tests. the study tries to find any relationships between the ct ability of students and their performance on reading tests of tofel and academic ielts. however, no research has ever been conducted to investigate the relationship between ct and the read...
15 صفحه اولSolute–vacancy binding in aluminum
Previous efforts to understand solute–vacancy binding in aluminum alloys have been hampered by a scarcity of reliable, quantitative experimental measurements. Here, we report a large database of solute–vacancy binding energies determined from first-principles density functional calculations. The calculated binding energies agree well with accurate measurements where available, and provide an ac...
متن کاملMulti-functional magnesium alloys containing interstitial oxygen atoms
A new class of magnesium alloys has been developed by dissolving large amounts of oxygen atoms into a magnesium lattice (Mg-O alloys). The oxygen atoms are supplied by decomposing titanium dioxide nanoparticles in a magnesium melt at 720 °C; the titanium is then completely separated out from the magnesium melt after solidification. The dissolved oxygen atoms are located at the octahedral sites ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Materialia
سال: 2023
ISSN: ['1873-2453', '1359-6454']
DOI: https://doi.org/10.1016/j.actamat.2023.118805