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- Title
Crystallographic texture dependent bulk anisotropic elastic response of additively manufactured Ti6Al4V.
- Authors
Pantawane, Mangesh V.; Yang, Teng; Jin, Yuqi; Joshi, Sameehan S.; Dasari, Sriswaroop; Sharma, Abhishek; Krokhin, Arkadii; Srinivasan, Srivilliputhur G.; Banerjee, Rajarshi; Neogi, Arup; Dahotre, Narendra B.
- Abstract
Rapid thermokinetics associated with laser-based additive manufacturing produces strong bulk crystallographic texture in the printed component. The present study identifies such a bulk texture effect on elastic anisotropy in laser powder bed fused Ti6Al4V by employing an effective bulk modulus elastography technique coupled with ultrasound shear wave velocity measurement at a frequency of 20 MHz inside the material. The combined technique identified significant attenuation of shear velocity from 3322 ± 20.12 to 3240 ± 21.01 m/s at 45 ∘ and 90 ∘ orientations of shear wave plane with respect to the build plane of printed block of Ti6Al4V. Correspondingly, the reduction in shear modulus from 48.46 ± 0.82 to 46.40 ± 0.88 GPa was obtained at these orientations. Such attenuation is rationalized based on the orientations of α ′ crystallographic variants within prior columnar β grains in additively manufactured Ti6Al4V.
- Subjects
THREE-dimensional printing; ANISOTROPY; BULK modulus; SHEAR waves; FRICTION velocity; CRYSTALLOGRAPHY
- Publication
Scientific Reports, 2021, Vol 11, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-020-80710-6