Formation, Structure, and Crystallization Behavior of Cu-Based Bulk Glass-Forming Alloys
Abbreviated Journal Title
Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
METALLIC-GLASS; THERMAL-STABILITY; AMORPHOUS-ALLOYS; MECHANICAL-PROPERTIES; SUPERCOOLED LIQUID; ZR; ABILITY; STRENGTH; AG; DEVITRIFICATION; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering
We studied Cu-Zr-based alloys having exceptionally high glass-forming ability (GFA) and investigated the influence of Ag and Al addition on their structure and crystallization behavior. Most of the bulk glassy alloys (BGAs) do not contain any crystals, while some samples studied by high-resolution transmission electron microscopy (HRTEM) were found to contain well-developed medium-range order zones and nanoparticles in a bulk form. The crystallization kinetics of Cu(55)Zr(45), Cu(50)Zr(50), Cu(55-x) Zr(45)Ag (x) (x = 0, 10, 20), Cu(45)Zr(45)Al(5)Ag(5), Cu(44)Ag(15)Zr(36)Ti(5), and Cu(36)Zr(48)Al(8)Ag(8) glassy alloys was analyzed. An influence of the cooling rate on the formation of glassy phase and thermal stability of the Cu-based glassy alloys on heating was also studied. The crystallization kinetics and phase composition of the ribbon-shape and bulk glassy samples of Cu(36)Zr(48)Al(8)Ag(8) alloys were also analyzed. The results also indicate that the best glass-forming compositions are possibly located at slightly off-eutectic area, owing to the shift of the eutectic point due to the nonequilibrium processing conditions.
Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
Article; Proceedings Paper
Louzguine-Luzgin, D. V.; Xie, G.; Zhang, Q.; Suryanarayana, C.; and Inoue, A., "Formation, Structure, and Crystallization Behavior of Cu-Based Bulk Glass-Forming Alloys" (2010). Faculty Bibliography 2010s. 464.