Bulk Glassy and Quasicrystalline (Zr65Al7.5Cu27.5)100−xTix Alloys and Their Mechanical Properties
Bulk Glassy and Quasicrystalline (Zr65Al7.5Cu27.5)100−xTix Alloys and Their Mechanical Properties
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DOI：
10.2320/matertrans.mj200760
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发表时间：
2007-07
影响因子：
1.2
通讯作者：
J. Qiang;W. Zhang;G. Xie;A. Inoue
中科院分区：
文献类型：
--
作者：
J. Qiang;W. Zhang;G. Xie;A. Inoue
研究了（Zr65Al7.5Cu27.5）100-xTix（x = 0 ~ 15; at%）合金的非晶形成能力和热稳定性。结果表明，一定量的Ti能有效地提高Zr 65 Al 7.5 Cu 27.5合金的非晶形成能力。结果表明：（Zr65Al7.5Cu27.5）93 Ti 7 .采用铜模铸造法制备了直径为7 mm的大块玻璃样品。进一步Ti的添加使GFA恶化，导致二十面体相的析出，并且在（Zr 65 Al 7.5 Cu 27.5）90 Ti 10时获得3 mm的准晶圆柱体。室温压缩试验表明，准晶合金的断裂强度为1875 MPa，比（Zr65Al7.5Cu27.5）93 Ti 7块体非晶合金的断裂强度高300 MPa。
The glass-forming ability (GFA) and thermal stability of (Zr 65 Al 7.5 Cu 27.5 ) 100-x Ti x (x = 0∼15; in at%) alloys have been investigated. It was revealed that a certain amount of Ti addition could improve the GFA of Zr 65 Al 7.5 Cu 27.5 alloy effectively. The best bulk metallic glass (BMG) forming composition was found at (Zr 65 Al 7.5 Cu 27.5 ) 93 Ti 7 . Bulk glassy samples with diameter of 7 mm were made by means of copper mold casting. Further Ti additions deteriorated GFA and led to the precipitation of icosahedral phase, and 3 mm quasicrystalline cylinder was obtained at (Zr 65 Al 7.5 Cu 27.5 ) 90 Ti 10 . Room temperature compression testing showed that the quasicrystalline alloy had a fracture strength of 1875 MPa, being 300 MPa larger than that of the (Zr 65 Al 7.5 Cu 27.5 ) 93 Ti 7 monolithic BMG.