Application of synchrotron X-ray diffraction and nanoindentation for the determination of residual stress fields around scratches

2011 ◽  
Vol 59 (20) ◽  
pp. 7508-7520 ◽  
Author(s):  
M.K. Khan ◽  
M.E. Fitzpatrick ◽  
S.V. Hainsworth ◽  
A.D. Evans ◽  
L. Edwards
Keyword(s):  
Residual Stress ◽  
Stress Fields ◽  
X Ray Diffraction ◽  
X Ray

X-Ray Diffraction Determination of Metallurgical Damage in Turbo Blower Rotor Shafts

1988 ◽  
Vol 142 ◽  
Author(s):  
John F. Porter ◽  
Dan O. Morehouse ◽  
Mike Brauss ◽  
Robert R. Hosbons ◽  
John H. Root ◽  
...  
Keyword(s):  
Residual Stress ◽  
Hole Drilling ◽  
X Ray Diffraction ◽  
X Ray ◽  
Turbo Blower ◽  
Diffraction Determination ◽  
Defence Research ◽  
Stress Profiles ◽  
Non Destructive

AbstractStudies have been ongoing at Defence Research Establishment Atlantic on the evaluation of non-destructive techniques for residual stress determination in structures. These techniques have included neutron diffraction, x-ray diffraction and blind-hole drilling. In conjunction with these studies, the applicability of these procedures to aid in metallurgical and failure analysis investigations has been explored. The x-ray diffraction technique was applied to investigate the failure mechanism in several bent turbo blower rotor shafts. All examinations had to be non-destructive in nature as the shafts were considered repairable. It was determined that residual stress profiles existed in the distorted shafts which strongly indicated the presence of martensitic microstuctures. These microstructures are considered unacceptable for these shafts due to the potential for cracking or in-service residual stress relaxation which could lead to future shaft distortion.

X-Ray Diffraction Measurement of Residual Stresses in Thick, Multi-Pass Steel Weldments

1985 ◽  
Vol 107 (2) ◽  
pp. 185-191 ◽  
Author(s):  
C. O. Ruud ◽  
R. N. Pangborn ◽  
P. S. DiMascio ◽  
D. J. Snoha
Keyword(s):  
Residual Stress ◽  
Measurement Accuracy ◽  
Stress Measurement ◽  
Three Dimensional ◽  
Residual Stress Measurement ◽  
Stress Fields ◽  
Diffraction Measurement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Removal Technique

A unique X-ray diffraction instrument for residual stress measurement has been developed that provides for speed, ease of measurement, accuracy, and economy of surface stress measurement. Application of this instrument with a material removal technique, e.g., electropolishing, has facilitated detailed, high resolution studies of three-dimensional stress fields. This paper describes the instrumentation and techniques applied to conduct the residual stress measurement and presents maps of the residual stress data obtained for the surfaces of a heavy 2 1/4 Cr 1 Mo steel plate weldment.

X-Ray Diffraction Analysis of Steel with Oxidised Surface Layer

2016 ◽  
Vol 368 ◽  
pp. 99-102
Author(s):  
Lukáš Zuzánek ◽  
Ondřej Řidký ◽  
Nikolaj Ganev ◽  
Kamil Kolařík
Keyword(s):  
Residual Stress ◽  
Surface Layer ◽  
Residual Stresses ◽  
Diffraction Analysis ◽  
Oxide Surface ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electrolytic Polishing ◽  
Small Depth

The basic principle of the X-ray diffraction analysis is based on the determination of components of residual stresses. They are determined on the basis of the change in the distance between atomic planes. The method is limited by a relatively small depth in which the X-ray beam penetrates into the analysed materials. For determination of residual stresses in the surface layer the X-ray diffraction and electrolytic polishing has to be combined. The article is deals with the determination of residual stress and real material structure of a laser-welded steel sample with an oxide surface layer. This surface layer is created during the rolling and it prevents the material from its corrosion. Before the X-ray diffraction analysis can be performed, this surface layer has to be removed. This surface layer cannot be removed with the help of electrolytic polishing and, therefore, it has to be removed mechanically. This mechanical procedure creates “technological” residual stress in the surface layer. This additional residual stress is removed by the electrolytic polishing in the depth between 20 and 80 μm. Finally, the real structure and residual stresses can be determined by using the X-ray diffraction techniques.

Experimental determination of residual stress in silicon nitride diffusion bonds obtained by high-energy X-ray diffraction

2004 ◽  
Vol 148 (1) ◽  
pp. 60-63 ◽  
Author(s):  
M. Vila ◽  
M.L. Martínez ◽  
C. Prieto ◽  
P. Miranzo ◽  
M.I. Osendi ◽  
...  
Keyword(s):  
Residual Stress ◽  
Silicon Nitride ◽  
Experimental Determination ◽  
High Energy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffusion Bonds

X-ray diffraction analysis of three-dimensional residual stress fields reveals origins of thermal fatigue in uncoated and coated steel

2010 ◽  
Vol 62 (10) ◽  
pp. 774-777 ◽  
Author(s):  
C. Kirchlechner ◽  
K.J. Martinschitz ◽  
R. Daniel ◽  
C. Mitterer ◽  
J. Donges ◽  
...  
Keyword(s):  
Residual Stress ◽  
Diffraction Analysis ◽  
Thermal Fatigue ◽  
Three Dimensional ◽  
Stress Fields ◽  
Coated Steel ◽  
X Ray Diffraction ◽  
X Ray

Determination of the residual stress tensor in Cu/W multilayers by x‐ray diffraction

1993 ◽  
Vol 62 (3) ◽  
pp. 246-248 ◽  
Author(s):  
Ph. Goudeau ◽  
K. F. Badawi ◽  
A. Naudon ◽  
G. Gladyszewski
Keyword(s):  
Residual Stress ◽  
Stress Tensor ◽  
X Ray Diffraction ◽  
X Ray

Determination of residual stress in Cr‐implanted Al2O3by glancing angle x‐ray diffraction

1992 ◽  
Vol 60 (18) ◽  
pp. 2216-2218 ◽  
Author(s):  
E. D. Specht ◽  
C. J. Sparks ◽  
C. J. McHargue
Keyword(s):  
Residual Stress ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glancing Angle

Waterjet Machining and Peening of Metals

1999 ◽  
Vol 122 (1) ◽  
pp. 90-95 ◽  
Author(s):  
M. Ramulu ◽  
S. Kunaporn ◽  
D. Arola ◽  
M. Hashish ◽  
J. Hopkins
Keyword(s):  
Residual Stress ◽  
Plastic Deformation ◽  
Surface Integrity ◽  
Stress Fields ◽  
Abrasive Waterjet ◽  
Material Surface ◽  
X Ray Diffraction ◽  
X Ray ◽  
Waterjet Machining ◽  
Measurement And Evaluation

An experimental study was conducted to determine the influence of high-pressure waterjet (WJ) peening and abrasive waterjet (AWJ) machining on the surface integrity and texture of metals. A combination of microstructure analysis, microhardness measurements, and profilometry were used in determining the depth of plastic deformation and surface texture that result from the material removal process. The measurement and evaluation of residual stress was conducted with X-ray diffraction. The residual stress fields resulting from treatment were analyzed to further distinguish the influence of material properties on the surface integrity. It was found that waterjet peening induces plastic deformation at the surface layer of metals as good as shot peening. The degree of plastic deformation and the state of material surface were found to be strongly dependent on the peening conditions applied. [S0094-9930(00)00801-5]

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