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微量添加Nb元素对原位合成Cu基非晶复合材料力学性能的影响
  • ISSN号：1003-6326
  • 期刊名称：《中国有色金属学报：英文版》
  • 时间：0
  • 分类：TU512.4[建筑科学—建筑技术科学]
  • 作者机构：西北工业大学凝固技术国家重点实验室,西安710072
  • 相关基金：Project（51371149）supported by the National Natural Science Foundation of China; Project（151048）supported by the HUO Ying-dong Young Teacher Fund; Project（2015ZF53066）supported by the Aeronautical Science Foundation of China; Project（92-QZ-2014）supported by the Free Research Fund of State Key Laboratory of Solidification Processing,China; Project（2015KJXX-10）supported by Shaanxi Young Stars of Science and Technology,China; Proejct（2011CB610403）supported by the National Basic Research Program of China; Project（51125002）supported by the National Science Funds for Distinguished Young Scientists,China
作者： 翟海民, 王海丰, 刘峰
关键词： 块体非晶复合材料, Nb添加, 剪切带, 组织, 力学性能, bulk metallic glass composite, Nb addition, shear band, microstructure, mechanical property
中文摘要：

利用铜模铸造法获得（Cu（0.6）Zr（0.3）Ti（0.1））（95）Nb5块体非晶复合材料试样。该试样中均匀分布富Nb元素的枝晶相。结果表明,相比于非晶基体,枝晶具有更低的硬度值和弹性模量,在加载变形过程中,非晶基体和枝晶界面处产生应力集中,促使非晶基体中剪切带的萌生和分叉增殖,最终获得了约2200 MPa的压缩断裂强度和6.08%断裂应变。与其他Cu基非晶复合材料相比,所制备的（Cu（0.6）Zr（0.3）Ti（0.1））（95）Nb5非晶复合材料断裂强度没有明显的降低,证明添加Nb元素是一种非常容易和有效制备实用高强度、高塑性非晶复合材料的方法。

英文摘要：

In-situ formed （Cu0.6Zr0.3Ti0.1）95Nb5 bulk metallic glass （BMG） composite with Nb-rich dendrite randomly dispersed in hard glassy matrix was prepared by casting into a water-cooled copper mold. The dendrite has much smaller hardness and elastic modulus than glassy matrix, and the stress concentration at interface provides a channel for the initiating and branching of shear bands upon loading, thus leading to a high compressive fracture strain of 6.08% and fracture strength about 2200 MPa. Comparing with other Cu-based BMG composite, the fracture strength of present （Cu0.6Zr0.3Ti0.1）95Nb5 composite is not significantly reduced, indicating that the addition of Nb in the current work is an effective and effortless way to fabricate new practical BMG composites with enhanced strength and good plasticity.

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期刊信息
  • 《中国有色金属学报：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国有色金属学会
  • 主编：黄伯云
  • 地址：中国长沙中南大学
  • 邮编：410083
  • 邮箱：f-xsxb@csu.edu.cn
  • 电话：0731-88830949
  • 国际标准刊号：ISSN：1003-6326
  • 国内统一刊号：ISSN：43-1239/TG
  • 邮发代号:42-317
  • 获奖情况:
  • 国家“双百”期刊,第二届全国优秀科技期刊评比二等奖,中国有色金属工业总公司优秀科技期刊一等奖
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  • 被引量:1159