Abstract
A 100 μm×4 mm fine beam was applied at the 9.1 high resolution powder diffraction (HRPD) station of the CLRC Daresbury Laboratory to scan an individual grain from grain-boundary to grain-boundary in a tensile deformed coarse grain copper specimen. Diffraction profiles (θ-2θ) and rocking curves enabled a comprehensive analysis to be made of the intensity distribution around a fundamental Bragg reflection as a function of position in the specimen. The dislocation densities were found to be larger near the grain-boundary region than in the central parts of the grain. The dislocation-arrangement parameter M was found to be smaller in the grain-boundary region than in the centre of the grain, indicating an increased dipole character in the grain-boundary region. The rocking curves were wider near the grain boundaries than in the central region indicating larger misorientations between subgrains in this region at the strain level investigated here.
| Original language | English |
|---|---|
| Pages (from-to) | 81-87 |
| Number of pages | 7 |
| Journal | Materials Science and Engineering A |
| Volume | 247 |
| Issue number | 1-2 |
| Publication status | Published - Jun 1998 |
Fingerprint
Keywords
- Defect structure
- Line-profile analysis
- Microdiffraction
- Plastic deformation
- X-ray peak-profile analysis
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Microbeam X-ray diffraction studies of structural properties of polycrystalline metals by means of synchrotron radiation. / Ungár, T.; Langford, J. I.; Cernik, R. J.; Vörös, G.; Pflaumer, R.; Oszlányi, G.; Kovács, I.
In: Materials Science and Engineering A, Vol. 247, No. 1-2, 06.1998, p. 81-87.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microbeam X-ray diffraction studies of structural properties of polycrystalline metals by means of synchrotron radiation
AU - Ungár, T.
AU - Langford, J. I.
AU - Cernik, R. J.
AU - Vörös, G.
AU - Pflaumer, R.
AU - Oszlányi, G.
AU - Kovács, I.
PY - 1998/6
Y1 - 1998/6
N2 - A 100 μm×4 mm fine beam was applied at the 9.1 high resolution powder diffraction (HRPD) station of the CLRC Daresbury Laboratory to scan an individual grain from grain-boundary to grain-boundary in a tensile deformed coarse grain copper specimen. Diffraction profiles (θ-2θ) and rocking curves enabled a comprehensive analysis to be made of the intensity distribution around a fundamental Bragg reflection as a function of position in the specimen. The dislocation densities were found to be larger near the grain-boundary region than in the central parts of the grain. The dislocation-arrangement parameter M was found to be smaller in the grain-boundary region than in the centre of the grain, indicating an increased dipole character in the grain-boundary region. The rocking curves were wider near the grain boundaries than in the central region indicating larger misorientations between subgrains in this region at the strain level investigated here.
AB - A 100 μm×4 mm fine beam was applied at the 9.1 high resolution powder diffraction (HRPD) station of the CLRC Daresbury Laboratory to scan an individual grain from grain-boundary to grain-boundary in a tensile deformed coarse grain copper specimen. Diffraction profiles (θ-2θ) and rocking curves enabled a comprehensive analysis to be made of the intensity distribution around a fundamental Bragg reflection as a function of position in the specimen. The dislocation densities were found to be larger near the grain-boundary region than in the central parts of the grain. The dislocation-arrangement parameter M was found to be smaller in the grain-boundary region than in the centre of the grain, indicating an increased dipole character in the grain-boundary region. The rocking curves were wider near the grain boundaries than in the central region indicating larger misorientations between subgrains in this region at the strain level investigated here.
KW - Defect structure
KW - Line-profile analysis
KW - Microdiffraction
KW - Plastic deformation
KW - X-ray peak-profile analysis
UR - http://www.scopus.com/inward/record.url?scp=0003504566&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0003504566&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0003504566
VL - 247
SP - 81
EP - 87
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 1-2
ER -