Detecting density variations and nanovoids |
| |
Authors: | Miller M K Longstreth-Spoor L Kelton K F |
| |
Affiliation: | a Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6136, USA b Department of Physics, Washington University, St. Louis, MO 63130, USA |
| |
Abstract: | A combination of simulated and experimental data has been used to investigate the size range of nanovoids that can be detected in atom probe tomography data. Simulated atom probe tomography data have revealed that nanovoids as small as 1 nm in diameter can be detected in atom probe tomography data with the use of iso-density surfaces. Iso-density surfaces may be used to quantify the size, morphology and number density of nanovoids and other variations in density in atom probe tomography data. Experimental data from an aluminum-yttrium-iron metallic glass ribbon have revealed the effectiveness of this approach. Combining iso-density surfaces with atom maps also permits the segregation of solute to the nanovoids to be investigated. Field ion microscopy and thin section atom maps have also been used to detect pores and larger voids. |
| |
Keywords: | Atom probe tomography Voids Radiation damage |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|