| Téléchargement | - Voir le manuscrit accepté : An advantageous imaging perspective for quantitative evaluation of 7075 aluminum alloy grain boundary precipitates using scanning electron microscope (PDF, 1.9 Mio)
|
|---|
| DOI | Trouver le DOI : https://doi.org/10.1002/jemt.24117 |
|---|
| Auteur | Rechercher : Li, Dong1; Rechercher : Tu, Siyu1Identifiant ORCID : https://orcid.org/0000-0001-6016-4646; Rechercher : Chen, Jian1; Rechercher : Gagné, Marc‐Olivier1 |
|---|
| Affiliation | - Conseil national de recherches Canada. Automobile et les transports de surface
|
|---|
| Bailleur de fonds | Rechercher : National Research Council Canada |
|---|
| Format | Texte, Article |
|---|
| Sujet | backscattered electron; microstructure analysis; stress corrosion cracking |
|---|
| Résumé | 7075 Aluminum alloy (AA7075) samples undergone four aging sequences were examined using a scanning electron microscope (SEM) and a transmitted electron microscope (TEM). The measurements results validate the correlation between stress corrosion cracking (SCC) resistance and the size and inter-distance of the grain boundary precipitates (GBPs). To evaluate the size and inter-distance of GBPs, we demonstrate in this study a highly efficient SEM imaging technique that can unfold grain boundary in a two-dimensional view. Compared to TEM, imaging with backscattered electrons in SEM (SEM-BSE) is more advantageous for GBPs presentation and measurements. The major reason is that about 900 times more sampling area can be imaged with SEM from the same specimen for TEM observation, thus enabling frequent appearances of GBPs at normal top view perspective, a planar view best for GBPs quantitative analysis but not well-documented. The acceleration tension of SEM for imaging was optimized at 10 kV with an information depth of around 330 nm. |
|---|
| Date de publication | 2022-04-05 |
|---|
| Maison d’édition | Wiley |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro du CNRC | NRC-AST-2021-2022-032 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 9890e04b-6d8f-451e-80db-3dbe10b9de25 |
|---|
| Enregistrement créé | 2022-04-14 |
|---|
| Enregistrement modifié | 2025-11-03 |
|---|
