| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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A New Cu-Based Metallic Glass Composite with Excellent Mechanical Properties |
| Dong-Mei Li1, Lan-Sheng Chen1, Peng Yu1*, Ding Ding2, and Lei Xia2 |
1Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China
2Laboratory for Microstructure & Institute of Materials, Shanghai University, Shanghai 200072, China
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Dong-Mei Li, Lan-Sheng Chen, Peng Yu et al 2020 Chin. Phys. Lett. 37 086401 |
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Abstract A new Cu-based bulk metallic glass composite of nominal composition (at.%) Cu$_{41}$Ni$_{27}$Ti$_{25}$Al$_{7}$ with excellent plasticity and a strong work-hardening behavior is fabricated. Strength above 1859 MPa and plasticity more than 11% are achieved under compression and tension modes. The deformation mechanism is proposed to the structural heterogeneities of the composite that promotes multiple shear bands meanwhile inhibits their free propagation, which results in the macroscopically plastic strain and work hardening. The alloy contains relatively cheap metals and has a low cost, which is beneficial to industrial applications.
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Received: 01 June 2020
Published: 28 July 2020
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| Fund: Supported by the Chongqing Research Program of Basic Research and Frontier Technology (Grant Nos. cstc2018jcyjAX0329 and cstc2018jcyjAX0444), and the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No. KJZD-K201900501). |
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