Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2003, Vol. 24 ›› Issue (12): 1177-1180.DOI: -

• OriginalPaper • Previous Articles     Next Articles

Effect of B addition on thermal stability of bulk Zr-Ti-Ni-Cu-Be metallic glasses

Wu, Xiao-Feng (1); Zhang, Hai-Feng (2); Yang, Hong-Cai (1); Hu, Zhuang-Qi (2)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China; (2) Shenyang Natl. Lab. for Mat. Sci., Inst. of Metal Res., Chinese Acad. of Sci., Shenyang 110016, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2003-12-15 Published:2013-06-24
  • Contact: Wu, X.-F.
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Abstract: The effect of B addition on forming, crystallization and thermal stability of Zr-Ti-Ni-Cu-Be amorphous alloys was investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and optical microscopy. The results indicate that B addition significantly changes the glass transition temperature (Tg), crystallization temperature (Tx) and supercooled liquid region (▵Tx) of the alloy. When y(B)&le3at%, B addition can keep it in bulk shape with ▵Tx extended and Tg/Tx increased to improve its thermal stability. When y(B)≥6at% , B addition can induce the precipitation of lots of Zr2Cu/ZrB2 coarse crystals which can not reinforce the metallic glass because they are non-nanocrystals in big size and irregular shape.

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