Al-based metallic glass composites containing fcc Pb-rich crystalline spheres

He, Jie; Li, Haiquan; Zhao, Jiuzhou; Dai, Chunli
September 2008
Applied Physics Letters;9/29/2008, Vol. 93 Issue 13, p131907
Academic Journal
Liquid immiscible systems present a unique opportunity in designing composites with sphere-dispersed microstructure. The authors report here phase formation of a multicomponent Al82.87Pb2.5Ni4.88Y7.8Co1.95 alloy upon melt spinning. The alloy undergoes liquid-liquid phase transformation in the liquid immiscibility gap and subsequently solidifies into Pb-rich crystalline phase and Al-rich amorphous phase. The Pb-rich phase with sphere shape is dispersed in the Al-based metallic glass matrix. The average diameter of the Pb-rich spheres is ∼0.62 μm near the free side and ∼0.03 μm near the wheel side of the ribbon.


Related Articles

  • Thermoplastic Matrix Composites for Aeronautical Applications - The Amorphous/Semi-Crystalline Blends Option. Iannone, Michele; Esposito, Floriana; Cammarano, Aniello // AIP Conference Proceedings;2014, Vol. 1599, p66 

    Blends obtained by mixing high temperature applications thermoplastics have been investigated. Namely the blends considered in this work are made by semi-crystalline thermoplastics PEEK with amorphous PEI. The final goal is to analyse the mechanical, chemical-physical and environmental...

  • Nanoindentation-induced phase transformation in relaxed and unrelaxed ion-implanted amorphous germanium. Oliver, D. J.; Bradby, J. E.; Ruffell, S.; Williams, J. S.; Munroe, P. // Journal of Applied Physics;Nov2009, Vol. 106 Issue 9, p093509 

    We have investigated nanoindentation-induced plastic deformation in amorphous germanium (a-Ge) prepared by high-energy self-ion implantation. Using cross-sectional transmission electron microscopy, micro-Raman spectroscopy, and force-displacement curve analysis, we find strong evidence for a...

  • Development of Fe-B Based Bulk Metallic Glasses: Morphology of Residual Phases in Fe50Ni16Mo6B18Zr10 Glass. Aboki, Tiburce A. // Metals (2075-4701);Jun2013, Vol. 3 Issue 2, p159 

    Iron-boron based bulk metallic glasses (BMG) development has been initiated using Fe40Ni38Mo4B18 as precursor. Addition of zirconium up to 10 atomic % along with the reduction of Ni proportion improves the glass forming ability (GFA), which is optimum when Ni is suppressed in the alloy. However...

  • Relation between the mother ingot microstructure and the glass forming ability of a bulk glass forming alloy. Song, J. L.; Yan, Z. J.; He, S. R.; Li, J. F.; Zhou, Y. H. // Journal of Materials Science Letters;Jun2003, Vol. 22 Issue 12, p869 

    Discusses the relation between the mother ingot microstructure and the glass forming ability of a bulk glass forming alloy. Amorphous alloys are formed when the liquid atoms are frozen into a non-crystalline arrangement; Glasses can be produced at cooling rates as low as about 102 K/s in some...

  • Structural origin of the different glass-forming abilities in ZrCu and ZrNi metallic glasses. Gu-Qing Guo; Liang Yang; Cai-Long Huang; Da Chen; Lian-Yi Chen // Journal of Materials Research;8/28/2011, Vol. 26 Issue 16, p2098 

    The microstructures of Zr70Cu30 and Zr70Ni30 metallic glasses (MGs) were investigated via the synchrotron radiation techniques combined with the reverse Monte-Carlo simulations. Although Cu and Ni are neighbor elements in the periodic table and their atomic radii are almost the same in length,...

  • Bulk metallic glass formation in the binary Cu–Zr system. Wang, D.; Li, Y.; Sun, B.B.; Sui, M.L.; Lu, K.; Ma, E. // Applied Physics Letters;5/17/2004, Vol. 84 Issue 20, p4029 

    Using the Cu-Zr model system, we demonstrate that bulk amorphous alloys can be obtained by copper mold casting even in a binary metallic system. The narrow, off-eutectic, bulk-glass-forming range was found to require composition pinpointing to < 1 at. %. A phase selection diagram is used to...

  • Crack evolution in bulk metallic glasses. Pauly, Simon; Lee, Min Ha; Kim, Do Hyang; Kim, Ki Buem; Sordelet, Daniel J.; Eckert, Jürgen // Journal of Applied Physics;Nov2009, Vol. 106 Issue 10, p103518 

    In the present study, the mechanisms underlying plastic deformation of a Ni-based bulk metallic glass (BMG) are explored. Based on the microstructural investigations, a model is proposed how fracture emerges in BMGs. After deformation, the glass is macroscopically more fragile indicating a...

  • Understanding microstructural evolution and soft magnetic properties in nanocrystallized metallic glass FeCuNbSiB. Srivastava, A.; Srivastava, D.; Sharma, S.; Pujari, P.; Suresh, K.; Dey, G. // Journal of Nanoparticle Research;Jan2013, Vol. 15 Issue 1, p1 

    Microstructural evolution during nanocrystallization of amorphous metallic glass FeSiNbBCu has been studied. The effect of microstructural features of nanocrystalline phases on soft magnetic properties have been evaluated and rationalized with existing theoretical models. The TEM and XRD studies...

  • Strategy for pinpointing the best glass-forming alloys. Ma, D.; Tan, H.; Wang, D.; Li, Y.; Ma, E. // Applied Physics Letters;5/9/2005, Vol. 86 Issue 19, p191906 

    We present a model for the glass forming ability (GFA), based on phase selection of the glass over all the competing crystalline phases. Our analysis indicates that the best glass-forming zone can be either symmetric, or asymmetric, about the eutectic composition. Based on the model predictions...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics