论文信息 - Nanostructure–dendrite composites in the Fe–Zr binary alloy system exhibiting high strength and plasticity

Nanostructure–dendrite composites in the Fe–Zr binary alloy system exhibiting high strength and plasticity

The present study shows that nanostructure–dendrite composites successfully synthesize in the Fe–Zr binary eutectic system, exhibiting a better combination of strength and plasticity than bulk metallic glass or nanograined materials. The composites composed of microscaled dendritic phases (Fe2Zr or α-Fe) and nanoscaled lamellar eutectic matrix (Fe2Zr + α-Fe) exhibit high compressive strength (1.8–2.6 GPa) and plasticity (2.5–12%) under compression. In particular, the plasticity can be improved when coarsened ductile dendritic phases are reinforced in the fine-scaled lamellar eutectic matrix.

[1] T. Hufnagel,et al. Metallic glass matrix composite with precipitated ductile reinforcement , 2002 .

[2] J. Eckert,et al. Microscopic deformation mechanism of a Ti66.1Nb13.9Ni4.8Cu8Sn7.2 nanostructure–dendrite composite , 2006 .

[3] Wolfgang Löser,et al. High-strength Ti-base ultrafine eutectic with enhanced ductility , 2005 .

[4] W. Johnson,et al. Mechanical properties of Zr56.2Ti13.8Nb5.0Cu6.9Ni5.6Be12.5 ductile phase reinforced bulk metallic glass composite , 2001 .

[5] H. Gleiter,et al. Nanostructured materials: basic concepts and microstructure☆ , 2000 .

[6] Ludwig Schultz,et al. Novel Ti-base nanostructure–dendrite composite with enhanced plasticity , 2003, Nature materials.

[7] C. Koch. Optimization of strength and ductility in nanocrystalline and ultrafine grained metals , 2003 .

[8] Fenghua Zhou,et al. High tensile ductility in a nanostructured metal , 2002, Nature.

[9] J. Eckert,et al. New Fe-Cr-Mo-Ga-C composites with high compressive strength and large plasticity , 2007 .

[10] A. Inoue,et al. High-strength binary Ti-Fe bulk alloys with enhanced ductility , 2004 .

[11] D. V. Louzguine-Luzgin,et al. Investigation of Ti-Fe-Co bulk alloys with high strength and enhanced ductility , 2005 .

[12] W. Johnson. Bulk Glass-Forming Metallic Alloys: Science and Technology , 1999 .