transmission electron microscopy applied to phase transformations in ball bearings |
| |
Authors: | Einar Lindahl Ragnar Österlund |
| |
Affiliation: | Institute of Technology, Uppsala University, Box 534, S-751-21 Uppsala, Sweden |
| |
Abstract: | D transmission electron microscopy has been applied to rolling contact-fatigued ball bearings. The D technique implies that correlations between image features and the object lattice structure are transformed to a stereoscopic effect, using defocused dark-field image pairs. During contact fatigue, the martensite matrix may decay and be transformed to new phases. Particularly, a carbon-enriched phase has been studied. The findings indicate areas of probable nucleation sites and areas being dilated due to internal stresses. The phase is constituted of a lattice structure with minor and regular variations in the g-vector, involving vector orientation and magnitude. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|