Microstructure of Cu-Ti-Zr-Ni Bulk Amorphous Alloy

Yang Yingjun1; Wei Sidong1; Li Zheyu1; Shen Qingke1; Xing Dawei2

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Microstructure of Cu-Ti-Zr-Ni Bulk Amorphous Alloy
Vol. 29, Issue 9, Pages: 845-847(2009)
Published： 2009 ，
DOI：

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[1]杨英俊,魏思东,李哲煜,沈庆克,邢大伟.Cu-Ti-Zr-Ni块体非晶合金的结晶组织分析[J].特种铸造及有色合金,2009,29(09):845-847+781-782.

Yang Yingjun1, Wei Sidong1, Li Zheyu1, et al. Microstructure of Cu-Ti-Zr-Ni Bulk Amorphous Alloy. [J]. Special Casting & Nonferrous Alloys 29(9):845-847(2009)
[1]杨英俊,魏思东,李哲煜,沈庆克,邢大伟.Cu-Ti-Zr-Ni块体非晶合金的结晶组织分析[J].特种铸造及有色合金,2009,29(09):845-847+781-782. DOI：

Yang Yingjun1, Wei Sidong1, Li Zheyu1, et al. Microstructure of Cu-Ti-Zr-Ni Bulk Amorphous Alloy. [J]. Special Casting & Nonferrous Alloys 29(9):845-847(2009) DOI：

摘要

采用XRD与TEM技术分析了块体非晶合金Cu52.5Ti30Zr11.5Ni6超过临界形成直径后的结晶组织

发现合金体系中存在CuTi2-Cu10Zr7、Cu3Ti-CuZr、Cu3Ti-Cu10Zr7-CuZr等共晶组织形式

说明该多元非晶合金的深共晶点是由多个低元的共晶反应组成

熔体中与Cu10Zr7结构类似的局域团簇结构

对该系合金的玻璃形成能力具有重要影响。

Abstract

Crystallized microstructure of slowly solidified Cu52.5Ti30Zr11.5Ni6 bulk amorphous alloy was analyzed by XRD （X-ray diffraction） and TEM （transmission electron microscope）. It is found that there exists Cu-Ti2-Cu10Zr7

Cu3Ti-CuZr

Cu3Ti-Cu10Zr7-CuZr eutectic structure in the alloy system

which shows that the deep eutectic point of the amorphous alloy is composed of many low element eutectic reactions. Moreover

short-rang ordering clusters in the melt with configuration similar to that of Cu10Zr compound may be greatly contributed to the glass forming ability of the tested bulk amorphous alloy.