In situ observation of the phase selection from the undercooled melt in Cu-Zr

JOURNAL OF ALLOYS AND COMPOUNDS

卷:576

Article

Gegner, J.¹  Shuleshova, O.²  Kobold, R.¹  Holland-Moritz, D.¹  Yang, F.¹  Hornfeck, W.¹  Bednarcik, J.³  Herlach, D. M.¹ 

[1] Deutsch Zentrum Luft & Raumfahrt DLR, Inst Mat Phys Weltraum, D-51170 Cologne, Germany

[2] Leibnitz Inst Festkorperforsch, Inst Komplexe Mat, D-01171 Dresden, Germany

[3] Deutsch Elektronensynchrotron DESY, D-22603 Hamburg, Germany

关键词: Metallic glasses;    Rapid solidification;    Crystal structure;    X-ray diffraction;   

DOI  :  10.1016/j.jallcom.2013.04.035

来源: Elsevier

【 摘 要 】

The phase selection of intermetallic Cu50Zr50 and of eutectic Cu46Zr54 have been investigated by in situ high energy synchrotron X-ray diffraction on electrostatically levitated samples. No change in the selected primary phase over the whole accessible undercooling range for both compositions is found. In the case of Cu50Zr50 the primary phase is always of B2-type for undercoolings up to 310 K. Cu46Zr54 always solidifies as a combination of CuZr (B2) and CuZr2 (C11(b)). For Cu50Zr50 the temperature dependence of the lattice constant is reported. (C) 2013 Elsevier By. All rights reserved.

【 授权许可】

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