Enhancing bulk metallic glass formation in Ni–Nb–Sn-based alloys via substitutional alloying with Co and Hf
Enhancing bulk metallic glass formation in Ni–Nb–Sn-based alloys via substitutional alloying with Co and Hf
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DOI：
10.1557/jmr.2008.0084
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发表时间：
2008-03
影响因子：
2.7
通讯作者：
Li Zhang;M. Zhuo;Jian Xu
中科院分区：
文献类型：
--
作者：
Li Zhang;M. Zhuo;Jian Xu
在相当宽的成分范围内（54-62 at.%）形成了大块金属玻璃Ni，32-36原子% Nb和3-11原子% Sn）在Ni-Nb-Sn三元系中的含量。Co部分替代Ni和Hf部分替代Nb提高了非晶形成能力，最终导致在Ni_（56）Co_（33）Nb_（28）Hf_（85）Sn_（5）组成下的4 mm非晶棒。这些合金元素的积极影响已被解释的基础上，作为Co和Hf含量的函数的竞争结晶相的量和形态的系统监测。
Bulk metallic glasses have been formed over a fairly wide composition range (54–62 at.% Ni, 32–36 at.% Nb, and 3–11 at.% Sn) in the Ni–Nb–Sn ternary system. Partial substitution of Co for Ni and Hf for Nb improves the glass-forming ability, eventually leading to 4 mm glassy rods at the Ni_56Co_3Nb_28Hf_8Sn_5 composition. The positive effects of these alloying elements have been explained based on a systematic monitoring of the amount and morphology of the competing crystalline phases as a function of the Co and Hf contents.