Investigation of residual stresses distribution in titanium weldments
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Date
2013-09
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Publisher
Australian Nuclear Science and Technology Organisation
Abstract
Titanium and its alloys have increasingly become a material of choice for applications in high-performance structures due to their superior corrosion resistance and high strength-to-weight ratio. However, in contrast to conventional steel alloys, there exist little design and manufacturing experience in the heavy fabrication industry with large welded structures made of titanium materials. In addressing the above concern, the University of New Orleans funded by Office of Naval Research (ONR) initiated program on investigation of manufacturability and performance of a titanium mid-ship section. The uniqueness of this program is its focus upon a representative full-size mid-ship section upon which relevant scientific and technological challenges are simulated and experimentally validated.
This paper reports the measurements of residual stresses using neutron diffraction in titanium T-joints. The residual stresses were measured using Engin-X at ISIS (UK) and the Kowari Strain Scanner at ANSTO (Australia). This experimental research was used to validate our in house predictions and significantly improved the knowledge and understanding of the welding process of titanium alloys.
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Keywords
Titanium, Residual stresses, Welding, Alloys, Steels, Ships, ANSTO, Measuring instruments, Australian organizations
Citation
Song, S. P., Paradowska, A. M., & Dong, P. S. (2013). Investigation of residual stresses distribution in titanium weldments. Poster presentation to MECA SENS 2013 : 7th International Conference on Mechanical Stress Evaluation by Neutron and Synchrotron Radiation, 10-12 September 2013, Coogee, New South Wales, Australia, (pp. 154).