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		合金元素Hf, Sn, Ta, Zr, Dy和Ho对Nb-Nb5Si3合金组织和力学性能的影响*
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			EFFECT OF Hf, Sn, Ta, Zr, Dy AND Ho ON MICRO- STRUCTURE AND MECHANICAL PROPERTIES OF Nb-Nb5Si3 ALLOY
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| 图1. 不同Hf含量的Nb-16Si合金的BSE像[10] | 
| Fig.1. BSE images of Nb-16Si alloy with different contents of Hf [10] (a) Nb-16Si (b) Nb-16Si-1Hf (c) Nb-16Si-3Hf (d) Nb-16Si-7Hf | 
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