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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2. Hf含量对Nb-16Si合金室温断裂韧性的影响[10] | 
| Fig.2. Effect of Hf contents on room temperature toughness of Nb-16Si alloy [10] | 
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