Surface residual stress measurement of shot-peened S45C using strain scanning method
Inquiry number
SOL-0000000900
Beamline
BL22XU (JAEA Actinide Science I)
Scientific keywords
| A. Sample category | inorganic material |
|---|---|
| B. Sample category (detail) | metal, alloy |
| C. Technique | X-ray diffraction |
| D. Technique (detail) | powder diffraction |
| E. Particular condition | tensile loading |
| F. Photon energy | X-ray (> 40 keV) |
| G. Target information | dislocation, strain |
Industrial keywords
| level 1---Application area | mechanics, industrial material |
|---|---|
| level 2---Target | Steel |
| level 3---Target (detail) | |
| level 4---Obtainable information | residual stress |
| level 5---Technique | diffraction |
Classification
A80.20 metal ・material
Body text
Strain scanning method is a powerful technique to study the residual stress or strain of material from surface to internal. Using this technique, one can measure the stress of steels with plastic deformation by heating or surface processing, and that of interface between coating and base materials. In comparison to the 2-sin^2 method, we can measure the stress distribution very rapidly with high spatial resolution by strain scanning method. Figure shows the stress distribution measured for a S45C steel with shot-peening on the surface. The sample is found to have the compression stress to 0.3mm depth from the surface; no stress remains in the deeper region.The results are in agreement with those obtained by a conventional grinding surface method with a laboratory X-ray source.
Figure Stress distribution of shot-peened S45C.
Source of the figure
Private communication/others
Description
shobu@spring8.or.jp
Technique
Source of the figure
No figure
Required time for experimental setup
8 hour(s)
Instruments
| Instrument | Purpose | Performance |
|---|---|---|
| 4 axis diffractmeter | get the strain from surface to internal | 0.2×2.0mm 10sec/point |
References
Related experimental techniques
Questionnaire
The measurement was possible only in SPring-8. Impossible or very difficult in other facilities.
This solution is application of a new instrument installed in the past two years.
Ease of measurement
Middle
Ease of analysis
Middle
How many shifts were needed for taking whole data in the figure?
Two-three shifts