Novel Microstructure (novel + microstructure)

Distribution by Scientific Domains


Selected Abstracts


Achieving Low Temperature Superplasticity from Ca-Containing Magnesium Alloy Sheets,

ADVANCED ENGINEERING MATERIALS, Issue 7 2009
Woo-Jin Kim
The application of hot extrusion and high-speed-ratio differential speed rolling (HRDSR) to a Ca-containing Mg -3Al1Zn magnesium alloy, processed by electromagnetic casting in the presence of electromagnetic stirring, produced a novel microstructure, composed of an ultrafine grain size of less than 1,,m and very fine (Al,Mg)2Ca particles that were uniformly and densely distributed over the matrix. The HRDSR processed alloy exhibited excellent superplasticity at relatively low temperatures (below 523,K). [source]


Nanoscale Solute Partitioning in Bulk Metallic Glasses,

ADVANCED MATERIALS, Issue 3 2009
Ling Yang
Devitrification of bulk metallic glass leads to a novel microstructure, with high-density nanoscale crystalline precipitates evenly distributed in a glassy matrix. Significant chemical segregation is revealed at unprecedented detail by atom-probe tomography. This level of detail is crucial for understanding the interference peaks observed in small-angle X-ray and neutron scattering experiments, an unsolved mistery for over a decade. [source]


Preparation of Necklace-Structured TiO2/SnO2 Hybrid Nanofibers and Their Photocatalytic Activity

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Issue 10 2009
Rui Zhang
TiO2/SnO2 nanonecklace-structured hybrid nanofibers have been prepared via an electrospinning method. These hybrid nanofibers are characterized with SnO2 -rich beads and pure TiO2 chains. It is found that TiO2 in the beads shows a rutile structure, and the one in the chains is entirely composed of anatase phase. This novel microstructure enhanced the photocatalytic activity, as well as its ideal recyclable character. We believe that this fire-new type of nanofiber may potentially serve as a new generation photocatalyst in environmental remediation. [source]


Metallic Glasses: Nanoscale Solute Partitioning in Bulk Metallic Glasses (Adv. Mater.

ADVANCED MATERIALS, Issue 3 2009
3/2009)
Devitrification of bulk metallic glass leads to novel microstructures with high-density nanoscale crystalline precipitates evenly distributed in a glassy matrix. Xun-Li Wang and co-workers report on p. 305 that significant chemical segregation is revealed in unprecedented detail by atom-probe tomography. This level of detail is crucial for understanding the interference peaks observed in small-angle X-ray and neutron scattering experiments. [source]