In situ formed Ti–Cu–Ni–Sn–Ta nanostructure-dendrite composite with large plasticity

He, Guo; Löser, W.; Eckert, J.

doi:10.1016/s1359-6454(03)00386-0

Cited by 124 publications

(85 citation statements)

References 28 publications

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“…Primary crystallizing phases with different microstructures and volume fractions could be obtained under different cooling rates, forming some composites with different mechanical properties in Cu-Zr-Al ternary system. 10) In-situ precipitation of ductile micrometer particles or dendrites 16,[21][22][23][24] has been produced by addition of high melting point elements Ta, Nb or Mo. Zr-Cu-Al alloys have a better combination of strength and ductility due to in situ precipitation of CuZr phase.…”

Section: Resultsmentioning

confidence: 99%

Effects of Ta on Microstructure and Mechanical Property of Ti-Zr-Cu-Pd-Ta Alloys

2007

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The effects of Ta on microstructure and mechanical property of Ti-Zr-Cu-Pd-Ta alloys without toxic element were investigated in this paper. The results revealed that with increasing Ta content, the glass-forming ability of examined alloys decreased. Nano-crystalline composites were obtained with 1% and 3% Ta addition. Higher strength and distinct plastic deformation comparing with Ti-Zr-Cu-Pd base alloy were achieved in 1% Ta-containing alloys due to the nano-particles existing in the glassy matrix which inhibit the deformation of shear bands. Dendrite enriched with Ta was also observed in the 5% Ta-containing alloy by SEM. No plastic deformation was observed for 3% and 5% Tacontaining alloys with the high volume fractions of crystallization over 50%.

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Section: Resultsmentioning

confidence: 99%

Effects of Ta on Microstructure and Mechanical Property of Ti-Zr-Cu-Pd-Ta Alloys

2007

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“…Along this line, bcc dendrite phase reinforced composites have been developed in a series of Ti-based [23][24][25][26] and Zr-based 27-29 multicomponent alloys. These composites exhibit promising mechanical properties, i.e., high strength of more than 2 GPa and large ductility of more than 15%, thus showing superior plastic deformability compared to monolithic bulk metallic glasses, 3,6 previously reported other bulk metallic glass composites, 14,15 and single-phase nanocrystalline 30 materials.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of slowly cooled Cu_47.5Zr_47.5Al₅

et al. 2007

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Cu 47.5 Zr 47.5 Al 5 was prepared by arc melting and solidified in situ by suction casting into 2-5-mm-diameter rods under various cooling rates (200-2000 K/s). The microstructure was investigated along the length of the rods by electron microscopy, differential scanning calorimetry and mechanical properties were investigated under compression. The microstructure of differently prepared specimens consists of macroscopic spherical shape chemically inhomogeneous regions together with a low volume fraction of randomly distributed CuZr B2 phase embedded in a 2-7 nm size clustered "glassy-martensite" matrix. The as-cast specimens show high yield strength (1721 MPa), pronounced work-hardening behavior up to 2116 MPa and large fracture strain up to 12.1-15.1%. The fracture strain decreases with increasing casting diameter. The presence of chemical inhomogenities and nanoscale "glassy-martensite" features are beneficial for improving the inherent ductility of the metallic glass.

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“…11,15) Similarly, the matrix phase and the eutectic structure in the Ti-Cu-Fe-SnNb alloys also act as strengthening entities, while the dendritic bcc -Ti(RM) phase provides the ductility. The more strengthening phases there are, the higher yield strength the alloys have (e.g., alloys A and B in Table 3).…”

Section: Mechanical Behavior Of the As-prepared Alloysmentioning

confidence: 99%

Effect of Composition on Microstructure and Compressive Mechanical Properties in Ti-Cu-Fe-Sn-Nb Alloys

Hagiwara

2004

Mater. Trans.

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The microstructure and the compressive mechanical properties of the Ti-Cu-Fe-Sn-Nb alloys are significantly affected by the compositions. When the Cu in the alloys is more than 12 mol% and the Fe more than 10 mol%, the microstructure contains the dendritic bcc -Ti solid solution, the matrix phase and the eutectic structure. With decreasing the contents of Cu and Fe, the dendritic structure increases in volume fraction, while the matrix phase decreases and the eutectic structure vanishes away. Correspondingly, the yield strength and the Young's modulus decrease, but the plastic strain increases. At the higher contents of Cu and Fe, the alloys exhibit the yield strengths of 1442-1515 MPa and the Young's module of 90-101 GPa, but the small plastic strains. At the lower contents of Cu and Fe, the alloys exhibit the yield strengths of 1050-1321 MPa and the Young's module of 47-76 GPa, which are very attractive for the biomedical applications.

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In situ formed Ti–Cu–Ni–Sn–Ta nanostructure-dendrite composite with large plasticity

Cited by 124 publications

References 28 publications

Effects of Ta on Microstructure and Mechanical Property of Ti-Zr-Cu-Pd-Ta Alloys

Effects of Ta on Microstructure and Mechanical Property of Ti-Zr-Cu-Pd-Ta Alloys

Microstructure and mechanical properties of slowly cooled Cu_47.5Zr_47.5Al₅

Effect of Composition on Microstructure and Compressive Mechanical Properties in Ti-Cu-Fe-Sn-Nb Alloys

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In situ formed Ti–Cu–Ni–Sn–Ta nanostructure-dendrite composite with large plasticity

Cited by 124 publications

References 28 publications

Effects of Ta on Microstructure and Mechanical Property of Ti-Zr-Cu-Pd-Ta Alloys

Effects of Ta on Microstructure and Mechanical Property of Ti-Zr-Cu-Pd-Ta Alloys

Microstructure and mechanical properties of slowly cooled Cu47.5Zr47.5Al5

Effect of Composition on Microstructure and Compressive Mechanical Properties in Ti-Cu-Fe-Sn-Nb Alloys

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Microstructure and mechanical properties of slowly cooled Cu_47.5Zr_47.5Al₅