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| ZrTiCoAl Bulk Metallic Glasses and Their Mechanical Properties |
| GAO Huili, SHEN Yong, HE Qiang, XU Jian |
| Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 |
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Cite this article:
GAO Huili SHEN Yong HE Qiang XU Jian. ZrTiCoAl Bulk Metallic Glasses and Their Mechanical Properties. Chin J Mater Res, 2011, 25(6): 602-606.
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Abstract Using “3D–pinpointing approach”, Zr55Ti2Co28Al15 alloy with high glass–forming ability (GFA) is discovered in quaternary Zr–Ti–Co–Al system, whose critical diameter for BMG formation reaches 8 mm. In comparison with Ti–free ternary Zr56Co28Al16 BMG, glass transition temperature (Tg) of Zr55Ti2Co28Al15 BMG decreases by about 9 K. Nevertheless, no significant difference is observed in the elastic constants such as Young’s modulus, shear modulus, bulk modulus and Poisson’s ratio. Compressive fracture strength of Zr55Ti2Co28Al15 BMG is around 1990 MPa, while its fracture strength in tension is about 1690 MPa.
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Received: 24 May 2011
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| Fund: Supported by National Basic Research Program of China (973 Program) No.2007CB613906. |
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