Study of the effect of annealing on defects in Fe–Mn–Si–Cr–Ni–C alloy by slow positron beam
| Autor: | N. Van Caenegem, Khaled M. Mostafa, Yvan Houbaert, Danny Segers, J. De Baerdemaeker |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Antiparticle
Materials science Annihilation Condensed matter physics Annealing (metallurgy) Alloy General Physics and Astronomy Surfaces and Interfaces General Chemistry Shape-memory alloy engineering.material Condensed Matter Physics Surfaces Coatings and Films Positron Nuclear magnetic resonance engineering Physics::Accelerator Physics Deformation (engineering) Doppler broadening |
| Zdroj: | Applied Surface Science. 255:145-148 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2008.05.220 |
| Popis: | FeMnSi shape memory alloys (SMAs) have received much attention as one-way SMAs due to their cost-effectiveness. Variable-energy (0–30 keV) positron beam studies have been carried out on a Fe–Mn–Si–Cr–Ni–C alloy with different degrees of deformation. Doppler broadening profiles of the positron annihilation as a function of incident positron energy were shown to be quite sensitive to defects introduced by deformation. The variation of the nature and the concentration of defects are studied as a function of isochronal annealing temperature. These results are correlated with the data measured with the positron annihilation lifetime spectroscopy (PALS). The positron annihilation results are compared to XRD and optical microscopy (OM). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect