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Zr-Al-Ni-Cu-Nb塊體非晶復(fù)合材料的制備及熱穩(wěn)定性
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TG146.414

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Preparation and Thermal Stability of Zr-Al-Ni-Cu-Nb Bulk Amorphous Alloy Matrix Composites
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    摘要:

    采用結(jié)構(gòu)分析和熱分析手段研究了Nb對Zr65(Cu0.4Al0.3Ni0.3)35-xNbx(x=0, 3, 5, 6 7) (at%)合金玻璃形成能力和熱穩(wěn)定性的影響,采用銅模吸注法成功制備了非晶基體上均勻分布枝晶相的Zr65(Cu0.4Al0.3Ni0.3)28Nb7塊體非晶復(fù)合材料.Nb的添加導(dǎo)致合金的過冷液相區(qū)間的寬度顯著減小,同時(shí),Nb的加入使得合金的原子結(jié)構(gòu)更加無序化,因而合金具有更好的熱穩(wěn)定性.

    Abstract:

    The effects of Nb element addition on glass formation and thermal stability of Zr65(Cu0.4Al0.3Ni0.3)35-xNbx(x=0, 3,5,6,7) (at%) alloys were investigated through structural and thermal analysis. A composite microstructure with highly uniformly distributed and well-developed crystalline dendrites was successfully prepared by casting the Zr65(Cu0.4Al0.3Ni0.3)28Nb7 melt into a copper mold. The addition of Nb element results in the significant narrowing of supercooled liquid region. Furthermore, the addition of Nb element leads to an increased disorder in atomic structure of the alloy hence increases the thermal stability of the alloy.

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黃永江,孫劍飛,顏鑫,沈軍. Zr-Al-Ni-Cu-Nb塊體非晶復(fù)合材料的制備及熱穩(wěn)定性[J].稀有金屬材料與工程,2008,37(3):391~395.[Huang Yongjiang, Sun Jianfei, Yan Xin, Shen Jun. Preparation and Thermal Stability of Zr-Al-Ni-Cu-Nb Bulk Amorphous Alloy Matrix Composites[J]. Rare Metal Materials and Engineering,2008,37(3):391~395.]
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