@article { author = {M. Hanna, Walid and A. Mohamed, Farghalli}, title = {Effect of diamantane on the thermal stability of cryomilled aluminum alloy}, journal = {Advanced Materials Letters}, volume = {10}, number = {5}, pages = {361-365}, year = {2019}, publisher = {International Association of Advanced Materials}, issn = {0976-3961}, eissn = {0976-397X}, doi = {10.5185/amlett.2019.2282}, abstract = {The thermal stability behavior of Al-5083 cryomilled nanocrystalline powders stabilized by diamantane nanoparticles was studied in comparison with the alloy without diamantane. Nanocrystalline Al 5083 powders were produced by mechanical milling in a liquid nitrogen medium. The results revealed that Al 5083 with diamantane showed higher thermal stability than the cryomilled alloy without diamantane in the temperature limit from 473 °K to 773 °K (0.56 to 0.91Tm) for various annealing times from 0.5 h to 48 h. In this regard, calculations showed that while the grain size was still in the nano scale in the presence of diamantane, it was in the ultrafine range (> 150 nm) in the absence of diamantane. The above finding was qualitatively explained in terms of Zener’s concept.}, keywords = {Cryomilling,Diamantane,grain boundaries,nanocrystalline materials,thermal stability}, url = {https://aml.iaamonline.org/article_13855.html}, eprint = {https://aml.iaamonline.org/article_13855_d888e01555dc771c47f034db78a37774.pdf} }