Ti-Zr-V-Cu-Be BMGMCs Processed by Semi-Solid Processing

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Compared with monolithic bulk-metallic glasses at room temperature, in-situ two-phase bulk metallic glass matrix composites (BMGMCs) exhibit improved toughness. However, most of in-situ BMGMCs are developed through extremely rapid cooling, during which the solidification process cannot be controlled effectively. As a consequence, the microstructures of in situ two-phase composites, even with the same composition, vary from one to another, highly depend on the cooling rate. In the present investigation, the Ti-Zr-V-Cu-Be BMGMCs was prepared by using copper mould suction process, and the evolution of microstructures at semi-solid stage was investigated. The results indicated that microstructures of billets, produced by copper mould suction and water quenching after isothermal holding at semi-solid stage, mainly contained β-Ti phase and glass matrix. Isothermal holding temperature and time interval determined the final morphology of β-Ti phase. Compression tests showed that semi-solid processing could further improve ductility of BMGMCs effectively.

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Periodical:

Solid State Phenomena (Volume 285)

Edited by:

Qiang Zhu, Ahmed Rassili, Stephen P. Midson and Xiao Gang Hu

Pages:

111-114

Citation:

H. M. Guo et al., "Ti-Zr-V-Cu-Be BMGMCs Processed by Semi-Solid Processing", Solid State Phenomena, Vol. 285, pp. 111-114, 2019

Online since:

January 2019

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$41.00

[1] Inoue, Bulk Amorphous alloys, Mater. Rev. 43(1999)365-520.

[2] T. Terajima, K. Nakata, H. Kimura, Development of W-Reinforced Zr-Based metallic glass, J. Jap. Inst. Met., 50(2000)1322-1325.

[3] D.C. Hofmann, J.Y. Suh, A. Wiest, Designing metallic glass matrix composites with high toughness and tensile ductility, Nature, 451(7182):1085-1089.

DOI: https://doi.org/10.1038/nature06598

[4] J. Eckert, U. Kühn, . Mattern, Structural bulk metallic glasses with different length-scale of constituent phases, Intermetallics, 2(2002)1183-1190.

DOI: https://doi.org/10.1016/s0966-9795(02)00133-4

[5] T. Zhang, H.Y. Ye, J.Y. Shi, H.J. Yang, J.W. Qiao, Dendrite size dependence of tensile plasticity of in situ Ti-based metallic glass matrix composites, J. Alloys Compd. 583 (2014) 593-597.

DOI: https://doi.org/10.1016/j.jallcom.2013.08.201

[6] H.M. Guo, C. Wang, F.M. Wen, X.J. Yang, A.S. Zhang, Microstructure evolution of Ti48Zr18V12Cu5Be17 bulk metallic glass matrix composite during isothermal holding at semi-solid stage, Tans. Nonferrous Met. Soc. China, 16(2016)2110-2118.