东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (12): 1177-1180.DOI: -

• 论著 • 上一篇    下一篇

B对Zr-Ti-Ni-Cu-Be块状非晶合金热稳定性的影响

武晓峰;张海峰;杨洪才;胡壮麒   

  1. 东北大学材料与冶金学院;沈阳材料科学国家(联合)实验室;东北大学材料与冶金学院;沈阳材料科学国家(联合)实验室 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2003-12-15 发布日期:2013-06-24
  • 通讯作者: Wu, X.-F.
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展计划项目(G2000067201);;

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.
  • About author:-
  • Supported by:
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摘要： 利用X射线衍射(XRD)及差热分析(DSC)等方法研究了添加B对Zr Ti Cu Ni Be块状非晶合金的形成、结晶及热稳定性的影响·结果表明:在Zr Ti Cu Ni Be合金系中添加B可明显改变该合金的玻璃转变温度Tg,一次结晶温度Tx及过冷液相区ΔT等参数·当y(B)≤3%时,B的添加可使合金保持块状非晶,提高Tg、Tx并扩大过冷液相区,使非晶热稳定性增加;当y(B)≥6%时,B的添加将诱导大量的粗大Zr2Cu及ZrB2等晶体的析出·由于它们非纳米晶,尺寸较大,形状不规整,不能作为非晶复合材料的增强体·

关键词: Zr-Ti-Ni-Cu-Be块状非晶合金, B, 过冷液相区, 热稳定性, 第二相

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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