Peculiarities of ball-milling induced crystalline-amorphous transformation in Cu-Zr-Al-Ni-Ti alloys

Mizser-Tomolya, Kinga and Czél, Györgyné and Sycheva, Anna and Kissné Svéda, Mária and Ferenczi, T. and Roósz, András (2015) Peculiarities of ball-milling induced crystalline-amorphous transformation in Cu-Zr-Al-Ni-Ti alloys. INTERMETALLICS, 65. pp. 117-121. ISSN 0966-9795


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An amorphization process in (Cu<inf>49</inf>Zr<inf>45-x</inf>Al<inf>6+x</inf>)<inf>100-y-z</inf>Ni<inf>y</inf>Ti<inf>z</inf> (x = 1, y, z = 0; 5; 10) induced by ball-milling is reported in the present work. The aim was investigation of the effect of Ni and Ti addition to Cu<inf>49</inf>Zr<inf>45</inf>Al<inf>6</inf> and Cu<inf>49</inf>Zr<inf>44</inf>Al<inf>7</inf> based alloys as well as type of initial phases on the amorphization processes. Also the milling time sufficient for obtaining fully amorphous state was determined. The entire milling process lasted 25 h. Drastic structural changes were observed in each alloy after first 5 h of milling. In most cases, after 15 h of milling the powders had fully amorphous structure according to XRD except for those ones, where TEM revealed a few nanosized crystalline particles in the amorphous matrix. In (Cu<inf>49</inf>Zr<inf>45</inf>Al<inf>6</inf>)<inf>80</inf>Ni<inf>10</inf>Ti<inf>10</inf> alloy the amorphization process took place after 12 h of milling and the amorphous state was stable up to 25 h of milling. In the case of (Cu<inf>49</inf>Zr<inf>44</inf>Al<inf>7</inf>)<inf>80</inf>Ni<inf>10</inf>Ti<inf>10</inf> alloy the powders have fully amorphous structure between 12 h and 15 h of milling. © 2015 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Titanium alloys; Mechanical alloying and milling; F. microscopies; Crystalline particles; Amorphous structures; amorphous state; AMORPHOUS METALS; Amorphous matrices; Amorphization process; Zirconium; POWDERS; Powder metals; NICKEL; Milling (machining); Mechanical alloying; Glass transition; Crystalline materials; Ball milling; amorphous alloys; AMORPHIZATION; ALUMINUM; ALLOYS; F. Microscopy; D. Microstructure; C. Mechanical alloying and milling; B. Glass transitions and crystallization; A. Amorphous metals
Subjects: Q Science / természettudomány > QD Chemistry / kémia
Depositing User: MTMT SWORD
Date Deposited: 02 Sep 2015 12:24
Last Modified: 02 Sep 2015 12:24

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