Metallurgical and Materials Transactions A

, Volume 45, Issue 10, pp 4679–4697 | Cite as

Quantitative Comparison of Microtexture in Near-Alpha Titanium Measured by Ultrasonic Scattering and Electron Backscatter Diffraction

Article
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Abstract

Ultrasonic backscattering and attenuation data were collected and processed using recently developed theoretical models to estimate the directionally dependent, volume-averaged size, and morphology of microtextured regions (MTRs) in a near-α Ti-8Al-1Mo-1V bar. The sample was also interrogated with electron backscatter diffraction from which MTR sizes were obtained by either manual segmentation and linear intercept analysis or fitting the spatial autocorrelation of similarly oriented c-axes to the geometrical autocorrelation function used in the scattering model. The results of the ultrasonic inversion were in good agreement with the EBSD measurements for the radial direction but were off by a factor of ~2.45 for the longitudinal direction. Reasons for the discrepancy were discussed and strategies to improve the agreement were made.

Keywords

Attenuation Coefficient Orientation Distribution Function Ultrasonic Attenuation EBSD Data Wave Propagation Direction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgments

This work was performed as part of the in-house research activities of the Air Force Research Laboratory’s Materials and Manufacturing Directorate with partial support from the Air Force Office of Scientific Research (AFOSR) Task 12RX01COR (Dr. Ali Sayir, program manager). The support and encouragement of the Air Force management are gratefully acknowledged. The authors are also grateful to Dr. Ayman Salem (Materials Resources, LLC) for useful discussions and to G. Sherman (AFRL/RXCM) for assistance with manual segmentation of MTRs. The OSU effort was partially funded by AFOSR under the contract FA9550-09-1-0452 and by AFRL under contract FA8650-10-D-5210.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2014

Authors and Affiliations

  • Adam L. Pilchak
    • 1
  • Jia Li
    • 2
  • Stanislav I. Rokhlin
    • 2
  1. 1.Air Force Research LaboratoryMaterials and Manufacturing Directorate, AFRL/RXCMWright Patterson AFBUSA
  2. 2.Department of Materials Science and EngineeringThe Ohio State UniversityColumbusUSA

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