Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1498547 | Scripta Materialia | 2014 | 4 Pages |
Abstract
A grain growth study on polycrystalline 180 wt. ppm Zr-doped Al2O3 has revealed a discontinuous increase in grain boundary mobility. The mobility increases by over an order of magnitude within a narrow temperature window between 1550 and 1650 °C. The discontinuity is attributed to a grain boundary complexion transition that occurs at about 1600 °C. This grain boundary complexion transition has important implications for creep and oxidation protection, and technological issues such as scale growth in high-temperature alloys.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Shantanu K. Behera, Patrick R. Cantwell, Martin P. Harmer,