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000637229 0247_ $$2arXiv$$aarXiv:2508.16367
000637229 0247_ $$2datacite_doi$$a10.3204/PUBDB-2025-03821
000637229 037__ $$aPUBDB-2025-03821
000637229 041__ $$aEnglish
000637229 088__ $$2arXiv$$aarXiv:2508.16367
000637229 1001_ $$0P:(DE-H253)PIP1093852$$aDhekne, Pushkar$$b0$$eCorresponding author
000637229 245__ $$aDeformation mechanisms of L-PBF-processed Ti-6Al-4V investigated using a combined experimental and simulation approach
000637229 260__ $$c2025
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000637229 500__ $$acited as arXiv:2508.16367 [cond-mat.mtrl-sci]
000637229 520__ $$aDespite the significant application potential of laser powder bed fusion (L-PBF) processed Ti-6Al-4V components, a detailed understanding of their deformation mechanisms remains limited. This study investigates the deformation behavior of the {α^\prime} and α phases in the as-built and heat-treated specimens, respectively, using in-situ high-energy X-ray diffraction (HEXRD) combined with crystal plasticity modeling. Both phases exhibited similar elastic anisotropy, with the highest modulus along \{00.2\} and the lowest along \{10.0\}, although the α phase consistently showed higher directional moduli than the {α^\prime} phase. Their plastic deformation responses differed markedly: in the as-built {α^\prime} phase, slip activation followed the sequence prismatic \rightarrow basal \rightarrow pyramidal I \langle c+a \rangle, whereas in the heat-treated α phase, the sequence was basal \rightarrow prismatic \rightarrow pyramidal I \langle c+a \rangle. Analyses of full width at half maximum (FWHM) and diffraction peak intensities further supported these observations. Finally, inverse modeling within a crystal plasticity framework was employed to determine slip family--specific critical resolved shear stresses (CRSS), revealing higher CRSS values in the {α^\prime} phase for all slip systems except the prismatic family.
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000637229 650_7 $$2Other$$aMaterials Science (cond-mat.mtrl-sci)
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000637229 7001_ $$0P:(DE-HGF)0$$aPrabhu, Nikhil$$b1
000637229 7001_ $$0P:(DE-H253)PIP1086461$$aBönisch, Matthias$$b2
000637229 7001_ $$0P:(DE-H253)PIP1015554$$aSeefeldt, Marc$$b3
000637229 7001_ $$0P:(DE-HGF)0$$aDiehl, Martin$$b4
000637229 7001_ $$0P:(DE-H253)PIP1095900$$aVanmeensel, Kim$$b5
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000637229 9141_ $$y2025
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