| 定向凝固制备内生晶体增塑的锆基非晶复合材料 |
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| 引用本文： | 乔珺威,张勇,陈国良. 定向凝固制备内生晶体增塑的锆基非晶复合材料[J]. 金属学报, 2009, 45(4) |
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| 作者姓名： | 乔珺威 张勇 陈国良 |
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| 作者单位： | 北京科技大学新金属材料国家重点实验室,北京,100083 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金 |
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| 摘 要： | 通过Bridgman定向凝固成功制备了成分为Zr58.8Ti14.3Nb5.2Cu6.1Ni4.9Be1.0的内生枝晶增塑的非晶复合材料.内生枝晶的尺寸和体积分数可以经抽拉速度的改变得以控制,进而实现了对其力学性能的调节.研究表明,枝晶的大小与抽拉速度呈线性关系,体现出定向凝同在制备非晶复合材料方面可调控析出相的优势.通过对实验参数抽拉速度的优化得出,当抽拉速度为1.0 mm/s时,最高压缩强度达到了1930 MPa,断裂塑性达到11.3%.
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| 关 键 词： | 锆基块体非晶 复合材料 定向凝固 力学性能 |
SYNTHESIS OF PLASTIC Zr-BASED BULK METALLIC GLASS WITH CRYSTAL PHASE BY DIRECTIONAL SOLIDIFICATION |
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| QIA Junwei,ZHANG Yong,CHEN Guoliang. SYNTHESIS OF PLASTIC Zr-BASED BULK METALLIC GLASS WITH CRYSTAL PHASE BY DIRECTIONAL SOLIDIFICATION[J]. Acta Metallurgica Sinica, 2009, 45(4) |
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| Authors: | QIA Junwei ZHANG Yong CHEN Guoliang |
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| Affiliation: | QIAO Junwei,ZHANG Yong,CHEN Guoliang State Key Laboratory for Advanced Metals , Materials,University of Science , Technology Beijing,Beijing 100083 |
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| Abstract: | Plastic Zr_(58.5)Ti_(14.3)Nb_(5.2)Cu_(6.1)Ni_(4.9)Be_(11.0)bulk metallic glass matrix composites containing uniformly distributed dendrites in the glass matrix were synthesized by the Bridgman solidification mcthold.Through tailoring the withdrawal velocity,the volume fraction of dendrites with characteristic spanning length,as well as the mechanical properties of the samples can change.The characteristic spanning length of the individual dendrites roughly obeys linear relationship with the withdrawal veloc... |
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| Keywords: | Zr-based bulk metallic glass composite unidirectional solidification mechanical property |
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