期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 856, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.157130
关键词
GFA; B2-ZrCo phase; Conventional annealing; Activation energies; Micro-hardness
资金
- National Key Research and Development Program of China [2016YFB0701203, 2016YFB0700201, 2017YFA0403400]
- National Natural Science Foundation of China [U1832203, 11975202, 51671169, 51671170]
- Natural Science Foundation of Zhejiang Province [LY15E010003, LZ20E010002]
- Fundamental Research Funds for the Central Universities
The GFA and formation of primary B2-ZrCo phase in as-quenched Zr-Co-Al glassy alloys are generally mutually exclusive, similar to achieving strength and toughness in structural materials. By adding transitional element Nb, the detrimental effect of high Al content on B2-ZrCo phase formation can be reduced, thus stimulating the formation of B2-ZrCo phase without sacrificing the GFA of Zr-Co-Al BMGs.
The GFA and formation of primary B2-ZrCo phase in as-quenched Zr-Co-Al glassy alloys are generally mutually exclusive similar as the attainment of the strength and toughness (damage tolerant) for structural materials. Due to the detrimental effect of high Al content on the B2-ZrCo phase formation, some measures have to be taken to reduce this bad influence. Because the addition of transition elements such as Nb and Co could enhance formation of the B2-ZrCu phase in as-cast ZrCu-based BMG composites, the transition metal of Nb was selected and added to the Zr56Co28Al16 glassy alloy. In this study, the compressive plasticity and activation energies for as-cast Zr-Cu-Al-(Nb) were discussed. Furthermore, the conventional annealing was applied to investigate the effect of Nb on crystallization process because the conventional annealing can be regarded as a precursor to design the Zr-Co-Al BMG composites. The micro-hardness of as-annealed Zr-CoeAl-(Nb) alloys at different annealing temperature and dwelling time has also been studied. This method provides a potential route to stimulate formation of the B2-ZrCo phase without sacrificing the GFA of Zr-Co-Al BMGs. (C) 2020 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据