Ahn, Jin Woo Hwang, Dae Youn Kim, Gyeung-ho Kim, Hye Sung 2024-01-20T17:01:25Z 2024-01-20T17:01:25Z 2021-09-05 2011-06 1738-8228 https://pubs.kist.re.kr/handle/201004/130293 In this study, the relationship between corrosion resistance and microstructural characteristics such as grain size reduction, preferred orientation, and homogenous distribution of elements and impurity by mechanical milling of magnesium powder was investigated. Mechanical milling of pure magnesium powder exhibited a complex path to grain refinement and growth together with preferred orientation reversal with milling time. It was also found that anisotropic formation of dislocation on the basal plane of magnesium was initially the dominant mechanism for grain size reduction. After 60 hrs of milling, grain coarsening was observed and interpreted as a result of the strain relaxation process through recrystallization. In spite of the finer grain size and strong (002) texture developed in the sample prepared by spark plasma sintering at 500 degrees C for 5 min after mechanical milling for 2hrs, the sample showed a higher corrosion rate. The results from this study will be helpful for better understanding of the controlling factor for corrosion resistance and behaviors of mechanical milled magnesium powders. Korean KOREAN INST METALS MATERIALS GRAIN-SIZE NANOCRYSTALLINE METALS DEFORMATION ALLOYS NICKEL CU PD Corrosion Behavior and Microstructural Evolution of Magnesium Powder with Milling Time Prepared by Mechanical Milling Article 10.3365/KJMM.2011.49.6.454 1 KOREAN JOURNAL OF METALS AND MATERIALS, v.49, no.6, pp.454 - 461 KOREAN JOURNAL OF METALS AND MATERIALS 49 6 454 461 scie scopus kci 000292075500004 2-s2.0-79959951662 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article GRAIN-SIZE NANOCRYSTALLINE METALS DEFORMATION ALLOYS NICKEL CU PD metals mechanical alloying/milling corrosion transmission electron microscopy (TEM)