Abstract
A significant enhancement of yield strength and large plasticity was obtained in TiNb/Zr55Cu30Al10Ni5 composite by cyclic compression at the yield point. This phenomenon resulted from the cooperation of the metallic crystalline alloy TiNb and metallic glassy matrix Zr55Cu30Al10Ni5 in the composite. It was found that a large dislocation density of TiNb was produced during cyclic compression, which resulted in the increase of the strength. Meanwhile, the improvement of plasticity of the composite benefited from the propagation of excess shear bands in the glassy matrix, which were produced during the cyclic compression process. Hence, the collective effect of both resulted in the improved yield strength and large plasticity of the composite.
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SPS is a tradermark of Sumitomo Coal Mining Co. Ltd., Japan.
INSTRON is a trademark of Instron, Canton, MA.
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Acknowledgments
This work was supported by the National Nature Science Foundation of China (Grant Nos. 50771063 and 1174136), Science and Technology Commission of Shanghai Municipality (Grant No. 10JC1407400), and Ph.D. Programs Foundation of Ministry of Education of China (Grant No. 20100073110004).
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Manuscript submitted February 17, 2013.
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Chu, Z.H., Kato, H., Xie, G.Q. et al. Enhanced Mechanical Properties by Cyclic Compression in TiNb/Zr-Based Metallic Glassy Composite. Metall Mater Trans A 44, 4595–4600 (2013). https://doi.org/10.1007/s11661-013-1821-9
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DOI: https://doi.org/10.1007/s11661-013-1821-9