Measurement by X-Ray Diffraction of Macro-Stresses and Micro-Stresses in Titanium and a Titanium Alloy
The majority of processes involved in the production of metallic components give rise to residual stresses which, depending on their nature, may or may not be desirable. The residual stresses affect the material’s resistance to fatigue, fracture, stress corrosion and other properties, and consequently it is important to understand the nature and influence of these stresses. The full exploitation of the available residual stresses produced by optimum design and process control depends upon the reliability of the method of measurement, and an adequate understanding of the origin and effect of these stresses. This paper describes the development of an original method for the determination of both the macro- and micro-stresses in commercially pure titanium (IMI 130) and the Ti 6 Al 4V alloy (IMI 318A); results are presented for the stress distribution in samples deformed by shot peening, grinding and uniaxial tension.
KeywordsResidual Stress Shot Peening Silver Powder Ground Specimen Peening Intensity
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