Ultrasonic Spectroscopy and X-Ray Diffraction Study for ARB Aluminum

2007 ◽  
Vol 561-565 ◽  
pp. 937-940
Author(s):  
K. Hirai ◽  
T. Ichitsubo ◽  
Eiichiro Matsubara ◽  
Nobuhiro Tsuji
Keyword(s):  
Plastic Deformation ◽  
Diffraction Study ◽  
Significant Role ◽  
Diffraction Measurement ◽  
Ultrasonic Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ultrafine Grains ◽  
Peculiar Phenomenon

It has been reported that accumulative-roll-bonded (ARB) aluminum having ultrafine grains shows an intriguing mechanical character that it is hardened by annealing and contrarily softened by deformation. In order to understand the mechanism of such a peculiar phenomenon, we have investigated the dislocation damping with ultrasonic spectroscopy and total amount of dislocations with the X-ray diffraction measurement. From the present measurements, we have found that the dislocations introduced by the ARB process are tangled but can be released with a large stress. Such dislocations accumulated in ultrafine grains play a significant role in the plastic deformation.

X-Ray Diffraction Study of the Effects of Uniaxial Plastic Deformation on Residual Stress Measurements

1968 ◽  
Vol 12 ◽  
pp. 269-300 ◽  
Author(s):  
A. L. Esquivel
Keyword(s):  
Residual Stress ◽  
Plastic Deformation ◽  
Diffraction Study ◽  
Stress Factors ◽  
X Ray Diffraction ◽  
Test Fixture ◽  
X Ray ◽  
Stress Measurements ◽  
Iron Aluminum ◽  
Before And After

AbstractUniaxial Plastic Deformation (UPD) has been known to produce anomalies in residual stress measurements based on x-ray diffraction techniques. This study was undertaken to determine the magnitude of the effects, if any, on residual stress calculations from various materials subjected to UPD. An x-ray diffraction study using the two-exposure method ( ψ = 0° and ψ = U5°) was made on several iron, aluminum, and titanium alloys (AISI 4340, 4330M, 4130; 2024-13, 7075-T611; Ti-6Al-4V) before and after these alloys were deformed plastically by bending on a U-bend test fixture. The x-ray peak shifts, Δ2θ0-ψ, were recorded and the x-ray stress factors, Ki, calculated by three different methods. The results indicate that UPD of the calibration specimens will increase or decrease Ki depending on the alloy. These results are discussed together with observations on the additivity of residual and applied stresses, and the per cent differences in the stress measurements based on stress factors calculated by three different methods.

Ultrasonic Spectroscopy and X-Ray Diffraction Study for ARB Aluminum

2007 ◽  
pp. 937-940
Author(s):  
K. Hirai ◽  
T. Ichitsubo ◽  
Eiichiro Matsubara ◽  
Nobuhiro Tsuji
Keyword(s):  
Diffraction Study ◽  
Ultrasonic Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray

Volume and X-ray diffraction study of terephthal-bis-4,n-decylaniline (TBDA)

1986 ◽  
Vol 47 (1) ◽  
pp. 133-138 ◽  
Author(s):  
D. Guillon ◽  
A. Skoulios ◽  
J.J. Benattar
Keyword(s):  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray

X-ray diffraction study on uniformly oriented quasicrystals

1987 ◽  
Vol 48 (8) ◽  
pp. 1357-1361 ◽  
Author(s):  
F. Dénoyer ◽  
G. Heger ◽  
M. Lambert ◽  
J.M. Lang ◽  
P. Sainfort
Keyword(s):  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray

AN X-RAY DIFFRACTION STUDY OF THE THERMAL MOTION OF ATOMS IN β-TIN

1980 ◽  
Vol 41 (C1) ◽  
pp. C1-145-C1-146 ◽  
Author(s):  
B. Greenberg ◽  
G. M. Rothberg
Keyword(s):  
Diffraction Study ◽  
Thermal Motion ◽  
X Ray Diffraction ◽  
X Ray

Synchrotron X-ray diffraction study on the cation distribution in quaternary Li-Fe-Mn spinel oxides

2007 ◽  
Vol 2007 (suppl_26) ◽  
pp. 477-482
Author(s):  
W. Nowicki ◽  
J. Darul ◽  
P. Piszora ◽  
C. Baehtz ◽  
E. Wolska
Keyword(s):  
Diffraction Study ◽  
Cation Distribution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Spinel Oxides
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