Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 324-328 |
| Seitenumfang | 5 |
| Fachzeitschrift | Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques |
| Jahrgang | 84 |
| Ausgabenummer | 5 |
| Publikationsstatus | Veröffentlicht - Mai 1993 |
| Extern publiziert | Ja |
Abstract
The lattice strains around δ′ (Al3Li) precipitates in an Al - Li alloy were studied by diffuse X-ray scattering near the (220) Bragg reflection. Convergent beam electron diffraction (CBED) was also used. In the calculation of the diffuse scattering due to precipitates on the basis of the kinematical theory, the relatively large volume fraction (about 20%) of the precipitates was taken into account by incorporating into the model a `sphere of influence' around the particles as well as an interparticle interference effect. The measured X-ray intensity distributions were fitted by calculated curves for which the particle radius and the lattice misfit were adjustable parameters. The small negative values obtained for the lattice mismatch were found to decrease with particle size. CBED results also indicate the presence of three-dimensional isotropic strain fields with small distortions around the δ′ precipitates. The values of misfit strain are considerably smaller than previously reported ones.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Chemie (insg.)
- Physikalische und Theoretische Chemie
- Werkstoffwissenschaften (insg.)
- Metalle und Legierungen
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques, Jahrgang 84, Nr. 5, 05.1993, S. 324-328.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Lattice mismatch of δ′ particles in an Al-Li alloy
AU - Lendvai, Janos
AU - Borbely, Andras
AU - Maier, Hans Jurgen
AU - Ungar, Tamas
PY - 1993/5
Y1 - 1993/5
N2 - The lattice strains around δ′ (Al3Li) precipitates in an Al - Li alloy were studied by diffuse X-ray scattering near the (220) Bragg reflection. Convergent beam electron diffraction (CBED) was also used. In the calculation of the diffuse scattering due to precipitates on the basis of the kinematical theory, the relatively large volume fraction (about 20%) of the precipitates was taken into account by incorporating into the model a `sphere of influence' around the particles as well as an interparticle interference effect. The measured X-ray intensity distributions were fitted by calculated curves for which the particle radius and the lattice misfit were adjustable parameters. The small negative values obtained for the lattice mismatch were found to decrease with particle size. CBED results also indicate the presence of three-dimensional isotropic strain fields with small distortions around the δ′ precipitates. The values of misfit strain are considerably smaller than previously reported ones.
AB - The lattice strains around δ′ (Al3Li) precipitates in an Al - Li alloy were studied by diffuse X-ray scattering near the (220) Bragg reflection. Convergent beam electron diffraction (CBED) was also used. In the calculation of the diffuse scattering due to precipitates on the basis of the kinematical theory, the relatively large volume fraction (about 20%) of the precipitates was taken into account by incorporating into the model a `sphere of influence' around the particles as well as an interparticle interference effect. The measured X-ray intensity distributions were fitted by calculated curves for which the particle radius and the lattice misfit were adjustable parameters. The small negative values obtained for the lattice mismatch were found to decrease with particle size. CBED results also indicate the presence of three-dimensional isotropic strain fields with small distortions around the δ′ precipitates. The values of misfit strain are considerably smaller than previously reported ones.
UR - http://www.scopus.com/inward/record.url?scp=0027590140&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0027590140
VL - 84
SP - 324
EP - 328
JO - Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
JF - Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
SN - 0044-3093
IS - 5
ER -