| B对Zr-Ti-Ni-Cu-Be块状非晶合金热稳定性的影响 |
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| 引用本文： | 武晓峰,张海峰,杨洪才,胡壮麒.B对Zr-Ti-Ni-Cu-Be块状非晶合金热稳定性的影响[J].东北大学学报(自然科学版),2003,24(12):1177-1180. |
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| 作者姓名： | 武晓峰 张海峰 杨洪才 胡壮麒 |
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| 作者单位： | 1. 东北大学,材料与冶金学院,辽宁,沈阳,110004
2. 沈阳材料科学国家,联合,实验室,辽宁,沈阳,110016 |
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| 基金项目： | 国家重点基础研究发展计划项目(G2000067201)，国家自然科学基金资助项目(50274277) |
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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·
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| 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 |
| 文章编号： | 1005-3026(2003)12-1177-04 |
| 修稿时间： | 2003年5月20日 |
Effect of B Addition on Thermal Stability of Bulk Zr-Ti-Ni-Cu-Be Metallic Glasses |
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| WU Xiao-feng,ZHANG Hai-feng,YANG Hong-cai,HU Zhuang-qi.Effect of B Addition on Thermal Stability of Bulk Zr-Ti-Ni-Cu-Be Metallic Glasses[J].Journal of Northeastern University(Natural Science),2003,24(12):1177-1180. |
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| Authors: | WU Xiao-feng ZHANG Hai-feng YANG Hong-cai HU Zhuang-qi |
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| Institution: | WU Xiao-feng~1,ZHANG Hai-feng~2,YANG Hong-cai~1,HU Zhuang-qi~2 |
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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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| Keywords: | Zr-Ti-Ni-Cu-Be amorphous alloy B addition supercooled liquid region thermal stability second phase |
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