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A Method for X-Ray Stress Analysis of Thermochemically Treated Materials

Published online by Cambridge University Press:  06 March 2019

Rolf A. Prümmer  and
H. W. Pfeiffer-Vollmar
Rolf A. Prümmer
Affiliation:
Fraunhofer-Institut für Werkstoffmechanik, Freiburg, W-Germany
H. W. Pfeiffer-Vollmar
Affiliation:
Fraunhofer-Institut für Werkstoffmechanik, Freiburg, W-Germany
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Extract

X-ray stress analysis is a nondestructive method enabling one to measure residual and loading stresses in polycrystalline materials. Known as a difficult method for several decades, the introduction of microprocessors allowed the automation of the measuring procedure and the subsequent storage and computation of diffraction data. Also the availability of position sensitive counters increased the efficiency of the method. Nowadays a residual stress or loading stress determination can be a problem of a few minutes if the time required for installation and alignment of the equipment is neglected. As the penetration of the X-ray beam into the investigated surface of polycrystalline materials is low and only a few micrometers the obtained information is that of a surface stress state. A further specialty of the method is the selective nature of X-ray stress analysis: lattice strains are measured in certain crystallographic directions. Therefore the elastic anisotropy of the single crystal has to be taken into account. If second phases are present in the investigated sample, also the effect of heterogeneity contributes to the stress analysis. Therefore, the “X-ray elastic constants” had to be introduced.

Type
V. X-Ray Stress Determination, Position Sensitive Detectors, Fatigue and Fracture Characterization
Information
Advances in X-Ray Analysis , Volume 26: Thirty-First Annual Conference on Applications of X-ray Analysis, August 1-6, 1982 , 1982 , pp. 225 - 231
Copyright
Copyright © International Centre for Diffraction Data 1982

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References

1. Glocker, R., Materialprüfung mit Röntgenstrahlen, Springer-Verlag, Bln, Hdbg., New York (1971).Google Scholar
2. Barrett, C. S., Structure of Metals, New York, McGraw Hill (1952)Google Scholar
3. Macherauch, E., Muller, U. P., Z. angew. Phys., 13 (1961) 305.Google Scholar
4. Prümmer, R., Kerntechnik, Isotopentechnik und Chemie 13 (1971) H.2, 68–77.Google Scholar
5. Vasilev, D. M., Sovj. Phys. Techn. Phys. 3 (1958) 2315.Google Scholar
6. DÖlle, H., Cohen, A. J. B., Metallurg. Transact. A, 11A (1980) 159.Google Scholar
7. Prummer, R., Pfeiffer-Vollmar, U. H. W., Z. Werkstofftechn. 12 (1981) 282.Google Scholar
8. Zwell, L., Speich, G. R., Leslie, A. W. C., Metallurg. Transact. 4 (1973) 1990.Google Scholar
9. Öhmann, E., Z. phys. Chem, B 8 (1930) H.1/2, 81.Google Scholar
10. Prummer, R., Pfeiffer-Vollmar, U. H. W., Siemens ATM 293 (1982).Google Scholar
11. Dubinin, G. N., Gribowski, A. L., Izv. Fiz.-cernaja metallurgija 11 (1962), 170.Google Scholar
12. Priimmer, R., unpubl. results.Google Scholar