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Enhanced Mechanical Properties by Cyclic Compression in TiNb/Zr-Based Metallic Glassy Composite |
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| Authors: | Z. H. Chu H. Kato G. Q. Xie G. Y. Yuan W. J. Ding |
| Affiliation: | 1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China 2. Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan 3. Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China |
| 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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